-
question_answer1)
Which of the following is not a Lewis acid [MP PET 2002]
A)
CO done
clear
B)
\[SiC{{l}_{4}}\] done
clear
C)
\[S{{O}_{3}}\] done
clear
D)
\[Z{{n}^{2+}}\] done
clear
View Solution play_arrow
-
question_answer2)
Review the equilibrium and choose the correct statement \[HCl{{O}_{4}}+{{H}_{2}}O\] ⇄ \[{{H}_{3}}{{O}^{+}}+ClO_{4}^{-}\] [RPMT 2000]
A)
\[HCl{{O}_{4}}\] is the conjugate acid of \[{{H}_{2}}O\] done
clear
B)
\[{{H}_{3}}{{O}^{+}}\] is the conjugate base of \[{{H}_{2}}O\] done
clear
C)
\[{{H}_{2}}O\] is the conjugate acid of \[{{H}_{3}}{{O}^{+}}\] done
clear
D)
\[ClO_{4}^{-}\] is the conjugate base of \[HCl{{O}_{4}}\] done
clear
View Solution play_arrow
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question_answer3)
A solution of \[FeC{{l}_{3}}\] in water acts as acidic due to [BVP 2003]
A)
Hydrolysis of \[F{{e}^{3+}}\] done
clear
B)
Acidic impurities done
clear
C)
Dissociation done
clear
D)
Ionisation done
clear
View Solution play_arrow
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question_answer4)
A white substance having alkaline nature in solution is [BVP 2003]
A)
\[NaN{{O}_{3}}\] done
clear
B)
\[N{{H}_{4}}Cl\] done
clear
C)
\[N{{a}_{2}}C{{O}_{3}}\] done
clear
D)
\[F{{e}_{2}}{{O}_{3}}\] done
clear
View Solution play_arrow
-
question_answer5)
Which of the following can act both as Bronsted acid and Bronsted base [MP PET 1995; MP PET/PMT 1998]
A)
\[C{{l}^{-}}\] done
clear
B)
\[HCO_{3}^{-}\] done
clear
C)
\[{{H}_{3}}{{O}^{+}}\] done
clear
D)
\[O{{H}^{-}}\] done
clear
View Solution play_arrow
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question_answer6)
Lewis acid [MP PMT 1987]
A)
Presence of H atom is necessary done
clear
B)
Is a electron pair donor done
clear
C)
Always a proton donor done
clear
D)
Is a electron pair acceptor done
clear
View Solution play_arrow
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question_answer7)
For two acids A and \[B,\,\,p{{K}_{a}}=1.2,\,\,p{{K}_{b}}=2.8\] respectively in value, then which is true [Bihar MEE 1998]
A)
A and B both are equally acidic done
clear
B)
A is stronger than B done
clear
C)
B is stronger than A done
clear
D)
Neither A nor B is strong done
clear
E)
None of these done
clear
View Solution play_arrow
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question_answer8)
Aq. solution of sodium cyanide is [BHU 1981]
A)
Acidic done
clear
B)
Amphoteric done
clear
C)
Basic done
clear
D)
Netural done
clear
View Solution play_arrow
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question_answer9)
Which of the following is the strongest conjugate base [MADT Bihar 1983; CBSE PMT 1999; KCET (Med.) 2001]
A)
\[C{{l}^{-}}\] done
clear
B)
\[C{{H}_{3}}CO{{O}^{-}}\] done
clear
C)
\[S{{O}_{4}}^{--}\] done
clear
D)
\[N{{O}_{2}}^{-}\] done
clear
View Solution play_arrow
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question_answer10)
\[NaOH\] is a strong base because [AIIMS 2001]
A)
It gives \[O{{H}^{-}}\]ion done
clear
B)
It can be oxidised done
clear
C)
It can be easily ionised done
clear
D)
Both A and C done
clear
View Solution play_arrow
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question_answer11)
Which one of the following can be classified as a Bronsted base [KCET 2001]
A)
\[NO_{3}^{-}\] done
clear
B)
\[{{H}_{3}}{{O}^{+}}\] done
clear
C)
\[NH_{4}^{+}\] done
clear
D)
\[C{{H}_{3}}COOH\] done
clear
View Solution play_arrow
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question_answer12)
Which one of the following substance has the highest proton affinity [AIEEE 2003]
A)
\[{{H}_{2}}O\] done
clear
B)
\[{{H}_{2}}S\] done
clear
C)
\[N{{H}_{3}}\] done
clear
D)
\[P{{H}_{3}}\] done
clear
View Solution play_arrow
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question_answer13)
Which of the following is the strongest Lewis acid [EAMCET 1998]
A)
\[B{{I}_{3}}\] done
clear
B)
\[BB{{r}_{3}}\] done
clear
C)
\[BC{{l}_{3}}\] done
clear
D)
\[B{{F}_{3}}\] done
clear
View Solution play_arrow
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question_answer14)
An aqueous solution of ammonia consists of [MP PET 2001]
A)
\[{{H}^{+}}\] done
clear
B)
\[O{{H}^{-}}\] done
clear
C)
\[NH_{4}^{+}\] done
clear
D)
\[NH_{4}^{+}\] and \[O{{H}^{-}}\] done
clear
View Solution play_arrow
-
question_answer15)
Which of the following is not a Lewis acid [CBSE PMT 1996]
A)
\[B{{F}_{3}}\] done
clear
B)
\[FeC{{l}_{3}}\] done
clear
C)
\[Si{{F}_{4}}\] done
clear
D)
\[{{C}_{2}}{{H}_{4}}\] done
clear
View Solution play_arrow
-
question_answer16)
The conjugate base of \[N{{H}_{2}}^{-}\]is [EAMCET 1998]
A)
\[N{{H}_{3}}\] done
clear
B)
\[N{{H}^{2-}}\] done
clear
C)
\[NH_{4}^{+}\] done
clear
D)
\[{{N}_{3}}^{-}\] done
clear
View Solution play_arrow
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question_answer17)
The strength of an acid depends on its tendency to [MP PET 1996]
A)
Accept protons done
clear
B)
Donate protons done
clear
C)
Accept electrons done
clear
D)
Donate electrons done
clear
View Solution play_arrow
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question_answer18)
Which is not a electrophile [RPET 1999]
A)
\[AlC{{l}_{3}}\] done
clear
B)
\[B{{F}_{3}}\] done
clear
C)
\[{{(C{{H}_{3}})}_{3}}{{C}^{+}}\] done
clear
D)
\[N{{H}_{3}}\] done
clear
View Solution play_arrow
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question_answer19)
Ammonia gas dissolves in water to give \[N{{H}_{4}}OH.\] In this reaction water acts as [CPMT 1990; MP PMT 1990]
A)
An acid done
clear
B)
A base done
clear
C)
A salt done
clear
D)
A conjugate base done
clear
View Solution play_arrow
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question_answer20)
In the equilibrium \[C{{H}_{3}}COOH+HF\]⇄ \[C{{H}_{3}}COO{{H}_{2}}^{+}+{{F}^{-}}\] [BHU 1987]
A)
\[{{F}^{-}}\]is the conjugate acid of \[C{{H}_{3}}COOH\] done
clear
B)
\[{{F}^{-}}\]is the conjugate base of \[HF\] done
clear
C)
\[C{{H}_{3}}COOH\] is the conjugate acid of \[C{{H}_{3}}COO{{H}_{2}}^{+}\] done
clear
D)
\[C{{H}_{3}}COO{{H}_{2}}^{+}\] is the conjugate base of \[C{{H}_{3}}COOH\] done
clear
View Solution play_arrow
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question_answer21)
The compound that is not a Lewis acid is [IIT 1985]
A)
\[HSO_{4}^{-}\] done
clear
B)
\[AlC{{l}_{3}}\] done
clear
C)
\[BeC{{l}_{2}}\] done
clear
D)
\[N{{H}_{3}}\] done
clear
View Solution play_arrow
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question_answer22)
Which of the following dissolves in water to give a neutral solution [Bihar MADT 1980]
A)
\[{{(N{{H}_{4}})}_{2}}S{{O}_{4}}\] done
clear
B)
\[Ba{{(N{{O}_{3}})}_{2}}\] done
clear
C)
\[CrC{{l}_{3}}\] done
clear
D)
\[CuS{{O}_{4}}\] done
clear
View Solution play_arrow
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question_answer23)
Which of the following is the strongest acid [AMU 1982]
A)
\[{{H}_{3}}P{{O}_{4}}\] done
clear
B)
\[{{H}_{2}}S{{O}_{4}}\] done
clear
C)
\[HN{{O}_{2}}\] done
clear
D)
\[C{{H}_{3}}COOH\] done
clear
View Solution play_arrow
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question_answer24)
An example of a Lewis acid is [MADT Bihar 1982; AMU 1982; MNR 1994; RPMT 1997; KCET 2000; Orissa JEE 2005]
A)
\[NaCl\] done
clear
B)
\[{{25}^{o}}C\] done
clear
C)
\[AlC{{l}_{3}}\] done
clear
D)
\[SnC{{l}_{4}}\] done
clear
View Solution play_arrow
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question_answer25)
In the equilibrium HClO4+H2O ⇌ H2O++\[ClO_{4}^{-}\] [BHU 1981, 86]
A)
\[HCl{{O}_{4}}\] is the conjugate acid of \[{{H}_{2}}O\] done
clear
B)
\[{{H}_{2}}O\] is the conjugate acid of \[{{H}_{3}}{{O}^{+}}\] done
clear
C)
\[{{H}_{3}}{{O}^{+}}\]is the conjugate base of \[{{H}_{2}}O\] done
clear
D)
\[ClO_{4}^{-}\] is the conjugate base of \[HCl{{O}_{4}}\] done
clear
View Solution play_arrow
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question_answer26)
Which of the following would be expected to form ionic solution in water [CPMT 1976; Kurukshetra CEE 1998]
A)
\[CC{{l}_{4}}\] done
clear
B)
\[{{O}_{2}}\] done
clear
C)
\[NaBr\] done
clear
D)
\[CHB{{r}_{3}}\] done
clear
View Solution play_arrow
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question_answer27)
A solution of sodium bicarbonate in water turns [NCERT 1971]
A)
Phenolphthalein pink done
clear
B)
Methyl orange yellow done
clear
C)
Methyl orange red done
clear
D)
Blue litmus red done
clear
View Solution play_arrow
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question_answer28)
Accepting the definition that an acid is a proton donor, the acid in the following reaction \[N{{H}_{3}}+{{H}_{2}}O\to NH_{4}^{+}+O{{H}^{-}}\] is [Kerala (Med.) 2003]
A)
\[N{{H}_{3}}\] done
clear
B)
\[{{H}^{+}}\] done
clear
C)
\[NH_{4}^{+}\] done
clear
D)
\[{{H}_{2}}O\] done
clear
View Solution play_arrow
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question_answer29)
With reference to protonic acids, which of the following statements is correct [CPMT 1990]
A)
\[P{{H}_{3}}\]is more basic than \[N{{H}_{3}}\] done
clear
B)
\[P{{H}_{3}}\]is less basic than \[N{{H}_{3}}\] done
clear
C)
\[P{{H}_{3}}\]is equally basic as \[N{{H}_{3}}\] done
clear
D)
\[P{{H}_{3}}\]is amphoteric while \[N{{H}_{3}}\] is basic done
clear
View Solution play_arrow
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question_answer30)
\[N{{H}_{4}}OH\] is weak base because [CPMT 1979]
A)
It has low vapour pressure done
clear
B)
It is only slightly ionized done
clear
C)
It is not a hydroxide of metal done
clear
D)
It has low density done
clear
View Solution play_arrow
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question_answer31)
\[HN{{O}_{3}}\]in liquid hydrogen fluoride behaves
A)
As an acid done
clear
B)
As a base done
clear
C)
Neither as a base nor as an acid done
clear
D)
As a base and as an acid done
clear
View Solution play_arrow
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question_answer32)
Aqueous solution of \[CuS{{O}_{4}}.5{{H}_{2}}O\] changes blue litmus paper to red due to [CPMT 1979; MP PMT 1989]
A)
Presence of \[C{{u}^{++}}\] ions done
clear
B)
Presence of \[S{{O}_{4}}^{--}\] ions done
clear
C)
Hydrolysis taking place done
clear
D)
Reduction taking place done
clear
View Solution play_arrow
-
question_answer33)
In the following reaction \[H{{C}_{2}}{{O}_{4}}^{-}+P{{O}_{4}}^{---}\] ⇄ \[HP{{O}_{4}}^{--}+{{C}_{2}}{{O}_{4}}^{--}\] Which are the two Bronsted bases [MP PMT 1991]
A)
\[0.1\,M\,HCN\] and \[P{{O}_{4}}^{---}\] done
clear
B)
\[HP{{O}_{4}}^{--}\] and \[{{C}_{2}}{{O}_{4}}^{--}\] done
clear
C)
\[N{{H}_{4}}Cl\] and \[P{{O}_{4}}^{---}\] done
clear
D)
\[P{{O}_{4}}^{---}\] and \[pH\] done
clear
View Solution play_arrow
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question_answer34)
Which of the following is the weakest acid [CPMT 2001]
A)
HF done
clear
B)
HCl done
clear
C)
HBr done
clear
D)
HI done
clear
View Solution play_arrow
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question_answer35)
The degree of dissociation in a weak electrolyte increases [CBSE PMT 1989; MP PMT 1997]
A)
On increasing dilution done
clear
B)
On increasing pressure done
clear
C)
On decreasing dilution done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer36)
\[{{H}^{+}}\] is a [MADT Bihar 1983]
A)
Lewis acid done
clear
B)
Lewis base done
clear
C)
Bronsted-Lowry base done
clear
D)
None of the above done
clear
View Solution play_arrow
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question_answer37)
Dissociation of \[{{H}_{3}}P{{O}_{4}}\]takes place in following steps [CPMT 1976; NCERT 1987]
A)
1 done
clear
B)
2 done
clear
C)
3 done
clear
D)
4 done
clear
View Solution play_arrow
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question_answer38)
The aqueous solution of disodium hydrogen phosphate is [MADT Bihar 1982]
A)
Acidic done
clear
B)
Neutral done
clear
C)
Basic done
clear
D)
None done
clear
View Solution play_arrow
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question_answer39)
Which of the following is a conjugated acid-base pair [MADT Bihar 1984; DPMT 2001]
A)
\[HCl,\,\,NaOH\] done
clear
B)
\[N{{H}_{4}}Cl,\,\,N{{H}_{4}}OH\] done
clear
C)
\[{{H}_{2}}S{{O}_{4}},\,\,HS{{O}_{4}}^{-}\] done
clear
D)
\[KCN,\,\,HCN\] done
clear
View Solution play_arrow
-
question_answer40)
The solution of strong acid and weak base \[N{{H}_{4}}Cl\]is [MADT Bihar 1981; CPMT 1979, 83, 84]
A)
Acidic done
clear
B)
Basic done
clear
C)
Neutral done
clear
D)
None of the above done
clear
View Solution play_arrow
-
question_answer41)
The conjugate acid of \[HPO_{3}^{2-}\]is [EAMCET 1989]
A)
\[{{H}_{3}}P{{O}_{4}}\] done
clear
B)
\[{{H}_{3}}P{{O}_{3}}\] done
clear
C)
\[{{H}_{2}}PO_{3}^{-}\] done
clear
D)
\[PO_{4}^{3-}\] done
clear
View Solution play_arrow
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question_answer42)
What name is given to the reaction between hydrogen ion and hydroxyl ion [MP PMT 1990]
A)
Hydrogenation done
clear
B)
Hydroxylation done
clear
C)
Hydrolysis done
clear
D)
Neutralization done
clear
View Solution play_arrow
-
question_answer43)
Among the following, the weakest Lewis base is [NCERT 1981]
A)
\[{{H}^{-}}\] done
clear
B)
\[O{{H}^{-}}\] done
clear
C)
\[C{{l}^{-}}\] done
clear
D)
\[HCO_{3}^{-}\] done
clear
View Solution play_arrow
-
question_answer44)
The \[pKa\]for acid A is greater than \[pKa\] for acid B. The strong acid is [DPMT 2000]
A)
Acid B done
clear
B)
Acid A done
clear
C)
Both A and B done
clear
D)
Neither A nor B done
clear
View Solution play_arrow
-
question_answer45)
The conjugate acid of \[NH_{2}^{-}\]is [IIT 1985; Roorkee 1995; EAMCET 1997;CBSE PMT PMT 2000; MP PET 1996,2000]
A)
\[N{{H}_{3}}\] done
clear
B)
\[NH_{4}^{+}\] done
clear
C)
\[N{{H}_{2}}OH\] done
clear
D)
\[{{N}_{2}}{{H}_{4}}\] done
clear
View Solution play_arrow
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question_answer46)
Correct statement is [CPMT 1985]
A)
\[N{{H}_{4}}Cl\]gives alkaline solution in water done
clear
B)
\[C{{H}_{3}}COONa\] gives acidic solution in water done
clear
C)
\[C{{H}_{3}}COOH\] is a weak acid done
clear
D)
\[N{{H}_{4}}OH\] is a strong base done
clear
View Solution play_arrow
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question_answer47)
\[p{{K}_{a}}\] of a weak acid is defined as [JIPMER 1999]
A)
log\[_{10}{{K}_{a}}\] done
clear
B)
\[\frac{1}{lo{{g}_{10}}{{K}_{a}}}\] done
clear
C)
log \[_{10}\frac{1}{{{K}_{a}}}\] done
clear
D)
?log \[_{10}\frac{1}{{{K}_{a}}}\] done
clear
View Solution play_arrow
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question_answer48)
A salt \['X'\] is dissolved in water \[(pH=7),\] the resulting solution becomes alkaline in nature. The salt is made of [CPMT 1983]
A)
A strong acid and strong base done
clear
B)
A strong acid and weak base done
clear
C)
A weak acid and weak base done
clear
D)
A weak acid and strong base done
clear
View Solution play_arrow
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question_answer49)
Which one is not an acid salt [MNR 1984]
A)
\[Na{{H}_{2}}P{{O}_{2}}\] done
clear
B)
\[Na{{H}_{2}}P{{O}_{3}}\] done
clear
C)
\[Na{{H}_{2}}P{{O}_{4}}\] done
clear
D)
None done
clear
View Solution play_arrow
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question_answer50)
A white substance was alkaline in solution. Which of the following substances could it be [CPMT 1989]
A)
\[F{{e}_{2}}{{O}_{3}}\] done
clear
B)
\[N{{a}_{2}}C{{O}_{3}}\] done
clear
C)
\[N{{H}_{4}}Cl\] done
clear
D)
\[NaN{{O}_{3}}\] done
clear
View Solution play_arrow
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question_answer51)
An aqueous solution of ammonium carbonate is [MP PMT 1989]
A)
Weakly acidic done
clear
B)
Weakly basic done
clear
C)
Strongly acidic done
clear
D)
Neither acidic nor basic done
clear
View Solution play_arrow
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question_answer52)
\[100\,\,ml\]of \[0.2\,\,M\,\,{{H}_{2}}S{{O}_{4}}\] is added to \[100\,\,ml\] of \[0.2\,\,M\,\,NaOH.\] The resulting solution will be [BHU 1996]
A)
Acidic done
clear
B)
Basic done
clear
C)
Neutral done
clear
D)
Slightly basic done
clear
View Solution play_arrow
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question_answer53)
\[{{H}_{3}}B{{O}_{3}}\] is [IIT Screening 2003]
A)
Monobasic and weak Lewis acid done
clear
B)
Monobasic and weak Bronsted acid done
clear
C)
Monobasic and strong Lewis acid done
clear
D)
Tribasic and weak Bronsted acid done
clear
View Solution play_arrow
-
question_answer54)
In the reaction \[SnC{{l}_{2}}+2C{{l}^{-}}\to SnC{{l}_{4}},\] Lewis acid is [EAMCET 1987]
A)
\[SnC{{l}_{2}}\] done
clear
B)
\[C{{l}^{-}}\] done
clear
C)
\[SnC{{l}_{4}}\] done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer55)
Lewis base is [RPMT 1997]
A)
\[C{{O}_{2}}\] done
clear
B)
\[S{{O}_{3}}\] done
clear
C)
\[S{{O}_{2}}\] done
clear
D)
\[ROH\] done
clear
View Solution play_arrow
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question_answer56)
\[1\times {{10}^{-12}}\] of \[1\,\,M\,\,{{H}_{2}}S{{O}_{4}}\] will completely neutralise
A)
\[10\,\,ml\] of \[1\,\,M\,\,NaOH\] solution done
clear
B)
\[10\,\,ml\] of \[2\,\,M\,\,NaOH\] solution done
clear
C)
\[5\,\,ml\] of \[2\,\,M\,\,KOH\] solution done
clear
D)
\[5\,\,ml\] of \[1\,\,M\,\,N{{a}_{2}}C{{O}_{3}}\] solution done
clear
View Solution play_arrow
-
question_answer57)
Which of the following compounds are diprotic [Pb. PMT 2000]
A)
\[{{H}_{2}}P{{O}_{5}}\] done
clear
B)
\[{{H}_{2}}S\] done
clear
C)
\[HCl{{O}_{3}}\] done
clear
D)
\[{{H}_{3}}P{{O}_{3}}\] done
clear
View Solution play_arrow
-
question_answer58)
When 100 ml of 1M \[NaOH\] solution is mixed with 10 ml of 10 M \[{{H}_{2}}S{{O}_{4}},\] the resulting mixture will be [AMU 2002]
A)
Acidic done
clear
B)
Alkaline done
clear
C)
Neutral done
clear
D)
Strongly alkaline done
clear
View Solution play_arrow
-
question_answer59)
The \[pH\]indicators are [KCET 1996]
A)
Salts of strong acids and strong bases done
clear
B)
Salts of weak acids and weak bases done
clear
C)
Either weak acids or weak bases done
clear
D)
Either strong acids or strong bases done
clear
View Solution play_arrow
-
question_answer60)
Which of the following is not Lewis acid [BHU 1997]
A)
\[B{{F}_{3}}\] done
clear
B)
\[AlC{{l}_{3}}\] done
clear
C)
\[FeC{{l}_{3}}\] done
clear
D)
\[P{{H}_{3}}\] done
clear
View Solution play_arrow
-
question_answer61)
A solution of sodium acetate in water will [MNR 1979]
A)
Turn red litmus blue done
clear
B)
Turn blue litmus red done
clear
C)
Not effect litmus done
clear
D)
Decolorizes litmus done
clear
View Solution play_arrow
-
question_answer62)
\[C{{l}^{-}}\]is the conjugate base of [NCERT 1979; CPMT 1976; MP PET/PMT 1988]
A)
\[HCl{{O}_{4}}\] done
clear
B)
\[1\times {{10}^{-5}},\] done
clear
C)
\[C{{H}_{3}}COONa\] done
clear
D)
\[HCl{{O}_{3}}\] done
clear
View Solution play_arrow
-
question_answer63)
Which of the following behaves as both Lewis and Bronsted base [MP PMT 2003]
A)
\[B{{F}_{3}}\] done
clear
B)
\[C{{l}^{-}}\] done
clear
C)
\[CO\] done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer64)
The conjugate acid of a strong base is a [EAMCET 1979]
A)
Strong acid done
clear
B)
Weak acid done
clear
C)
Strong base done
clear
D)
Weak base done
clear
View Solution play_arrow
-
question_answer65)
Which one is the weakest acid [DPMT 2002]
A)
\[HN{{O}_{3}}\] done
clear
B)
\[HCl{{O}_{4}}\] done
clear
C)
\[{{H}_{2}}S{{O}_{4}}\] done
clear
D)
\[HBr\] done
clear
View Solution play_arrow
-
question_answer66)
Conjugate base of \[HPO_{4}^{2-}\] is [MP PMT 1995]
A)
\[PO_{4}^{3-}\] done
clear
B)
\[{{H}_{2}}PO_{4}^{-}\] done
clear
C)
\[{{H}_{3}}P{{O}_{4}}\] done
clear
D)
\[{{H}_{4}}P{{O}_{3}}\] done
clear
View Solution play_arrow
-
question_answer67)
Which of the following is not Lewis acid [RPET/PMT 2002]
A)
\[FeC{{l}_{3}}\] done
clear
B)
\[AlC{{l}_{3}}\] done
clear
C)
\[BC{{l}_{3}}\] done
clear
D)
\[N{{H}_{3}}\] done
clear
View Solution play_arrow
-
question_answer68)
(i) A strong acid has a weak conjugate base (ii) An acid is an electron pair acceptor The above statements (i) and (ii)
A)
Correct done
clear
B)
Wrong done
clear
C)
(i) Correct and (ii) Wrong done
clear
D)
(i) Wrong and (ii) Correct done
clear
View Solution play_arrow
-
question_answer69)
The pH is less than 7, of the solution of [Pb. PMT 2002; MP PMT 2003]
A)
\[FeC{{l}_{3}}\] done
clear
B)
\[NaCN\] done
clear
C)
\[NaOH\] done
clear
D)
\[NaCl\] done
clear
View Solution play_arrow
-
question_answer70)
In the reaction \[{{I}_{2}}+{{I}^{-}}\to \,{{I}_{3}}^{-},\] the Lewis base is [CPMT 1997; RPMT 2002; BCECE 2005]
A)
\[{{I}_{2}}\] done
clear
B)
\[{{I}^{-}}\] done
clear
C)
\[{{I}_{3}}^{-}\] done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer71)
The strength of an acid depends on its tendency to [UPSEAT 2001]
A)
Accept protons done
clear
B)
Donate protons done
clear
C)
Accept electrons done
clear
D)
Donate electrons done
clear
View Solution play_arrow
-
question_answer72)
In Lewis acid-base theory, neutralization reaction may be considered as [NCERT 1977]
A)
Formation of salt and water done
clear
B)
Competition for protons by acid and base done
clear
C)
Oxidation reduction done
clear
D)
Coordinate covalent bond formation done
clear
View Solution play_arrow
-
question_answer73)
The salt that forms neutral solution in water is [EAMCET 1981]
A)
\[N{{H}_{4}}Cl\] done
clear
B)
\[NaCl\] done
clear
C)
\[N{{a}_{2}}C{{O}_{3}}\] done
clear
D)
\[{{K}_{3}}B{{O}_{3}}\] done
clear
View Solution play_arrow
-
question_answer74)
Which of the following cannot act as a Lewis or Bronsted acid [DCE 2001]
A)
\[B{{F}_{3}}\] done
clear
B)
\[AlC{{l}_{3}}\] done
clear
C)
\[SnC{{l}_{4}}\] done
clear
D)
\[CC{{l}_{4}}\] done
clear
View Solution play_arrow
-
question_answer75)
Which one of the following salts gives an acidic solution in water [MP PET 2002]
A)
\[C{{H}_{3}}COONa\] done
clear
B)
\[N{{H}_{4}}Cl\] done
clear
C)
\[NaCl\] done
clear
D)
\[C{{H}_{3}}COON{{H}_{4}}\] done
clear
View Solution play_arrow
-
question_answer76)
Which of the anhydrous salts when come in contact with water turns blue [AMU 1981, 82]
A)
Ferrous sulphate done
clear
B)
Copper sulphate done
clear
C)
Zinc sulphate done
clear
D)
Cobalt sulphate done
clear
View Solution play_arrow
-
question_answer77)
The species among the following, which can act as an acid and a base is [AIEEE 2002; KCET 2005]
A)
\[HSO_{4}^{-}\] done
clear
B)
\[SO_{4}^{2-}\] done
clear
C)
\[{{H}_{3}}{{O}^{+}}\] done
clear
D)
\[C{{l}^{-}}\] done
clear
View Solution play_arrow
-
question_answer78)
The strongest base from the following species is [KCET 1996]
A)
\[N{{H}^{2-}}\] done
clear
B)
\[O{{H}^{-}}\] done
clear
C)
\[{{O}^{2-}}\] done
clear
D)
\[{{S}^{2-}}\] done
clear
View Solution play_arrow
-
question_answer79)
Which one is Lewis acid [CPMT 1997]
A)
\[C{{l}^{-}}\] done
clear
B)
\[A{{g}^{+}}\] done
clear
C)
\[{{C}_{2}}{{H}_{5}}OH\] done
clear
D)
\[{{S}^{2-}}\] done
clear
View Solution play_arrow
-
question_answer80)
The conjugate acid of \[{{H}_{2}}PO_{4}^{-}\] is [MP PET 1990]
A)
\[{{H}_{3}}P{{O}_{4}}\] done
clear
B)
\[{{H}_{2}}PO_{4}^{-}\] done
clear
C)
\[PO_{4}^{3-}\] done
clear
D)
\[{{H}_{3}}{{O}^{+}}\] done
clear
View Solution play_arrow
-
question_answer81)
The conjugate acid of \[{{S}_{2}}O_{8}^{2-}\] is [EAMCET 1984]
A)
\[{{H}_{2}}{{S}_{2}}{{O}_{8}}\] done
clear
B)
\[{{H}_{2}}S{{O}_{4}}\] done
clear
C)
\[HSO_{4}^{-}\] done
clear
D)
\[H{{S}_{2}}O_{8}^{-}\] done
clear
View Solution play_arrow
-
question_answer82)
In the reaction \[BC{{l}_{3}}+P{{H}_{3}}\,\to \,C{{l}_{3}}B-P{{H}_{3}},\] Lewis base is [EAMCET 1986]
A)
\[BC{{l}_{3}}\] done
clear
B)
\[P{{H}_{3}}\] done
clear
C)
\[C{{l}_{3}}B-P{{H}_{3}}\] done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer83)
Which of the following statement is true [MP PMT 1996]
A)
The conjugate base of a strong acid is a strong base done
clear
B)
The conjugate base of a weak acid is a strong base done
clear
C)
The conjugate base of a weak acid is a weak base done
clear
D)
The base and its conjugate acid react to form a neutral solution done
clear
View Solution play_arrow
-
question_answer84)
What is the conjugate base of \[O{{H}^{-}}\] [AIEEE 2005]
A)
\[{{O}_{2}}\] done
clear
B)
\[{{H}_{2}}O\] done
clear
C)
\[{{O}^{-}}\] done
clear
D)
\[{{O}^{2-}}\] done
clear
View Solution play_arrow
-
question_answer85)
Which of the following is a Lewis base [BHU 1995]
A)
\[C{{H}_{4}}\] done
clear
B)
\[{{C}_{2}}{{H}_{5}}OH\] done
clear
C)
Acetone done
clear
D)
Secondary amine done
clear
View Solution play_arrow
-
question_answer86)
The correct order of acid strength is [CBSE PMT 2005]
A)
\[HClO<HCl{{O}_{2}}<HCl{{O}_{3}}<HCl{{O}_{4}}\] done
clear
B)
\[HCl{{O}_{4}}<HClO<HCl{{O}_{2}}<HCl{{O}_{3}}\] done
clear
C)
\[HCl{{O}_{2}}<HCl{{O}_{3}}<HCl{{O}_{4}}<HClO\] done
clear
D)
\[HCl{{O}_{4}}<HCl{{O}_{3}}<HCl{{O}_{2}}\]\[<HClO\] done
clear
View Solution play_arrow
-
question_answer87)
The strongest acid is [DPMT 2000]
A)
\[{{H}_{3}}As{{O}_{4}}\] done
clear
B)
\[{{H}_{3}}As{{O}_{3}}\] done
clear
C)
\[{{H}_{3}}P{{O}_{3}}\] done
clear
D)
\[{{H}_{3}}P{{O}_{4}}\] done
clear
View Solution play_arrow
-
question_answer88)
Which of the following is the strongest base [Roorkee 2000]
A)
\[{{C}_{2}}H_{5}^{-}\] done
clear
B)
\[{{C}_{2}}{{H}_{5}}CO{{O}^{-}}\] done
clear
C)
\[{{C}_{2}}{{H}_{5}}{{O}^{-}}\] done
clear
D)
\[O{{H}^{-}}\] done
clear
View Solution play_arrow
-
question_answer89)
The aqueous solution of which one of the following is basic [MP PMT 2001]
A)
\[HOCl\] done
clear
B)
\[NaHS{{O}_{4}}\] done
clear
C)
\[N{{H}_{4}}N{{O}_{3}}\] done
clear
D)
\[NaOCl\] done
clear
View Solution play_arrow
-
question_answer90)
Which of the following is the weakest base [IIT 1980]
A)
\[NaOH\] done
clear
B)
\[Ca\,{{(OH)}_{2}}\] done
clear
C)
\[N{{H}_{4}}OH\] done
clear
D)
\[KOH\] done
clear
View Solution play_arrow
-
question_answer91)
The suitable indicator for strong acid and weak base is [RPMT 1997; UPSEAT 2002]
A)
Methyl orange done
clear
B)
Methyl red done
clear
C)
Phenol red done
clear
D)
Phenolphthalein done
clear
View Solution play_arrow
-
question_answer92)
Among the following acids, the weakest one is [NCERT 1984]
A)
\[HF\] done
clear
B)
\[HCl\] done
clear
C)
\[HBr\] done
clear
D)
\[HI\] done
clear
View Solution play_arrow
-
question_answer93)
The compound HCl behaves as ?. in the reaction, \[HCl+HF\to H_{2}^{+}Cl+{{F}^{-}}\] [JIPMER 2001]
A)
Weak base done
clear
B)
Weak acid done
clear
C)
Strong base done
clear
D)
Strong acid done
clear
View Solution play_arrow
-
question_answer94)
The conjugate base of a strong acid is a [EAMCET 1978]
A)
Strong base done
clear
B)
Strong acid done
clear
C)
Weak acid done
clear
D)
Weak base done
clear
View Solution play_arrow
-
question_answer95)
Which among the following is strongest acid [BHU 2005]
A)
H(ClO)O2 done
clear
B)
H(ClO)O3 done
clear
C)
H(ClO)O done
clear
D)
H(ClO) done
clear
View Solution play_arrow
-
question_answer96)
In the reaction \[2{{H}_{2}}O\]⇄\[{{H}_{3}}{{O}^{+}}+O{{H}^{-}}\], water is [MP PET 1989]
A)
A weak base done
clear
B)
A weak acid done
clear
C)
Both a weak acid and a weak base done
clear
D)
Neither an acid nor a base done
clear
View Solution play_arrow
-
question_answer97)
In the reaction \[HCl+{{H}_{2}}O\]⇌ \[{{H}_{3}}{{O}^{+}}+C{{l}^{-}}\] [NCERT 1978; EAMCET 1982, 89]
A)
\[{{H}_{2}}O\] is the conjugate base of \[HCl\] acid done
clear
B)
\[C{{l}^{-}}\]is the conjugate base of \[HCl\]acid done
clear
C)
\[C{{l}^{-}}\]is the conjugate acid of \[{{H}_{2}}O\] base done
clear
D)
\[{{H}_{3}}{{O}^{+}}\]is the conjugate base of \[HCl\] done
clear
View Solution play_arrow
-
question_answer98)
According to Lewis concept, an acid is a substance which [EAMCET 1981; NCERT 1981; CPMT 1986; MP PMT 1987]
A)
Accepts protons done
clear
B)
Donates protons done
clear
C)
Accepts a lone pair of electrons done
clear
D)
Donates a lone pair of electrons done
clear
View Solution play_arrow
-
question_answer99)
Water is a [KCET 2002]
A)
Amphoteric acid done
clear
B)
Aprotic solvent done
clear
C)
Protophobic solvent done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer100)
Conjugate base of \[N{{H}_{3}}\] is [RPMT 2002]
A)
\[NH_{4}^{\oplus }\] done
clear
B)
\[NH_{2}^{\oplus }\] done
clear
C)
\[NH_{2}^{\Theta }\] done
clear
D)
\[{{N}_{2}}\] done
clear
View Solution play_arrow
-
question_answer101)
Which of the following species is an acid and also a conjugate base of another acid [NCERT 1981]
A)
\[HSO_{4}^{-}\] done
clear
B)
\[{{H}_{2}}S{{O}_{4}}\] done
clear
C)
\[O{{H}^{-}}\] done
clear
D)
\[{{H}_{3}}{{O}^{+}}\] done
clear
View Solution play_arrow
-
question_answer102)
Which of the following is Lewis acid [NCERT 1978; EAMCET 1987; MP PET 1994; CPMT 1990; AFMC 1997; RPMT 1999]
A)
\[B{{F}_{3}}\] done
clear
B)
\[C{{l}^{-}}\] done
clear
C)
\[{{H}_{2}}O\] done
clear
D)
\[N{{H}_{3}}\] done
clear
View Solution play_arrow
-
question_answer103)
According to Bronsted-Lowry concept, base is a substance which is [NCERT 1982; RPMT 1997 AFMC 1999]
A)
A proton donor done
clear
B)
An electron pair acceptor done
clear
C)
A proton acceptor done
clear
D)
An electron pair donor done
clear
View Solution play_arrow
-
question_answer104)
Which of the following is known as hydronium ion [NCERT 1976]
A)
\[{{H}^{+}}\] done
clear
B)
\[{{H}_{2}}{{O}^{+}}\] done
clear
C)
\[{{H}_{3}}{{O}^{+}}\] done
clear
D)
\[{{H}_{2}}O_{2}^{+}\] done
clear
View Solution play_arrow
-
question_answer105)
An aqueous solution of aluminium sulphate would show [NCERT 1977]
A)
An acidic reaction done
clear
B)
A neutral reaction done
clear
C)
A basic reaction done
clear
D)
Both acidic and basic reaction done
clear
View Solution play_arrow
-
question_answer106)
The aqueous solution of aluminium chloride is acidic due to [MNR 1986, 88]
A)
Cation hydrolysis done
clear
B)
Anion hydrolysis done
clear
C)
Hydrolysis of both anion and cation done
clear
D)
Dissociation done
clear
View Solution play_arrow
-
question_answer107)
\[HSO_{4}^{-}\] is the conjugate base of [NCERT 1977]
A)
\[{{H}^{+}}\] done
clear
B)
\[{{H}_{2}}S{{O}_{3}}\] done
clear
C)
\[SO_{4}^{2-}\] done
clear
D)
\[{{H}_{2}}S{{O}_{4}}\] done
clear
View Solution play_arrow
-
question_answer108)
An acid is a compound which furnishes (Bronsted-Lowry concept) [EAMCET 1975]
A)
An electron done
clear
B)
A proton done
clear
C)
An electron and a proton done
clear
D)
None of the above done
clear
View Solution play_arrow
-
question_answer109)
The conjugate base of sulphuric acid is [EAMCET 1974]
A)
Sodium hydroxide done
clear
B)
Hydrochloric acid done
clear
C)
Bisulphate ion done
clear
D)
Barium hydroxide done
clear
View Solution play_arrow
-
question_answer110)
Which is strongest Lewis base [CPMT 1994]
A)
\[Sb{{H}_{3}}\] done
clear
B)
\[As{{H}_{3}}\] done
clear
C)
\[P{{H}_{3}}\] done
clear
D)
\[N{{H}_{3}}\] done
clear
View Solution play_arrow
-
question_answer111)
According to Bronsted principle, an aqueous solution of \[HN{{O}_{3}}\] will contain [MP PMT/PET 1988]
A)
\[NO_{2}^{-}\] done
clear
B)
\[NO_{3}^{-}\] done
clear
C)
\[NO_{2}^{+}\] done
clear
D)
\[N{{O}^{+}}\] done
clear
View Solution play_arrow
-
question_answer112)
Aqueous solution of an acid is characterised by the presence of [NCERT 1977]
A)
\[{{H}^{+}}\]ions done
clear
B)
\[H_{2}^{+}\]ions done
clear
C)
\[{{H}_{3}}{{O}^{+}}\]ions done
clear
D)
\[{{H}_{4}}{{O}^{+}}\]ions done
clear
View Solution play_arrow
-
question_answer113)
Ammonium ion is [RPMT 1999; KCET 2002]
A)
Neither an acid nor base done
clear
B)
Both an acid and a base done
clear
C)
A conjugate acid done
clear
D)
A conjugate base done
clear
View Solution play_arrow
-
question_answer114)
Aqueous solution of \[AlC{{l}_{3}}\] is [RPMT 2002]
A)
Acidic done
clear
B)
Basic done
clear
C)
Amphoteric done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer115)
The species which acts as a Lewis acid but not a Bronsted acid is [MP PMT 1999; Kurukshetra CET 2002]
A)
\[NH_{2}^{-}\] done
clear
B)
\[{{O}^{2-}}\] done
clear
C)
\[B{{F}_{3}}\] done
clear
D)
\[O{{H}^{-}}\] done
clear
View Solution play_arrow
-
question_answer116)
Among the following, the weakest base is [MP PMT 2002]
A)
\[{{H}^{-}}\] done
clear
B)
\[CH_{3}^{-}\] done
clear
C)
\[C{{H}_{3}}{{O}^{-}}\] done
clear
D)
\[C{{l}^{-}}\] done
clear
View Solution play_arrow
-
question_answer117)
Which of the following is not lewis base [EAMCET 1975; RPMT 2002]
A)
\[N{{H}_{3}}\] done
clear
B)
\[P{{H}_{3}}\] done
clear
C)
\[{{(C{{H}_{3}})}_{3}}N\] done
clear
D)
\[H{{N}_{3}}\] done
clear
View Solution play_arrow
-
question_answer118)
\[p{{K}_{a}}\]value of the strongest acid among the following is [MP PMT 1990]
A)
3.0 done
clear
B)
4.5 done
clear
C)
1.0 done
clear
D)
2.0 done
clear
View Solution play_arrow
-
question_answer119)
The most acidic compound in water is [CBSE PMT 2001]
A)
\[AlC{{l}_{3}}\] done
clear
B)
\[BeC{{l}_{2}}\] done
clear
C)
\[FeC{{l}_{3}}\] done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer120)
\[B{{F}_{3}}\] is used as a catalyst in several industrial processes due to its [Kerala (Med.) 2002]
A)
Strong reducing agent done
clear
B)
Weak reducing agent done
clear
C)
Strong Lewis acid nature done
clear
D)
Weak Lewis acid character done
clear
View Solution play_arrow
-
question_answer121)
The aqueous solution of \[AlC{{l}_{3}}\] is acidic due to the hydrolysis of [UPSEAT 2001, 02]
A)
Aluminium ion done
clear
B)
Chloride ion done
clear
C)
Both aluminium and chloride ion done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer122)
Which shows weak ionisation in water [MH CET 2001]
A)
\[{{H}_{2}}S{{O}_{4}}\] done
clear
B)
\[NaCl\] done
clear
C)
\[HN{{O}_{3}}\] done
clear
D)
\[N{{H}_{3}}\] done
clear
View Solution play_arrow
-
question_answer123)
An organic dye, cosine used to detect end point of precipitation titration by adsorption is called [MH CET 1999]
A)
Absorption indicator done
clear
B)
Adsorption indicator done
clear
C)
Chemical indicator done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer124)
The indicator used in the titration of iodine against sodium thiosulphate is [AFMC 2002]
A)
Starch done
clear
B)
\[{{K}_{3}}Fe{{(CN)}_{6}}\] done
clear
C)
\[{{K}_{2}}Cr{{O}_{4}}\] done
clear
D)
Potassium done
clear
View Solution play_arrow
-
question_answer125)
Phenolphthalein does not act as an indicator for the titration between [Pb. PMT 2002]
A)
\[NaOH\] and \[C{{H}_{3}}COOH\] done
clear
B)
\[{{H}_{2}}{{C}_{2}}{{O}_{4}}\] and \[KMn{{O}_{4}}\] done
clear
C)
\[Ba{{(OH)}_{2}}\] and \[HCl\] done
clear
D)
\[KOH\]and \[{{H}_{2}}S{{O}_{4}}\] done
clear
View Solution play_arrow
-
question_answer126)
Which is not example of Bronsted Lowry theory [AIEEE 2003]
A)
\[AlC{{l}_{3}}\] done
clear
B)
\[{{H}_{2}}S{{O}_{4}}\] done
clear
C)
\[S{{O}_{2}}\] done
clear
D)
\[HN{{O}_{3}}\] done
clear
View Solution play_arrow
-
question_answer127)
An aqueous solution of sodium carbonate is alkaline because sodium carbonate is a salt of [MP PET 2002]
A)
Weak acid and weak base done
clear
B)
Strong acid and weak base done
clear
C)
Weak acid and strong base done
clear
D)
Strong acid and strong base done
clear
View Solution play_arrow
-
question_answer128)
The acid that results when a base accepts a proton is called [Kerala (Med.) 2002]
A)
Conjugate base of the acid done
clear
B)
Conjugate protonated base done
clear
C)
Lewis base done
clear
D)
Conjugate acid of the base done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer129)
Ammonia gas dissolves in water to form \[N{{H}_{4}}OH\]. In this reaction water acts as [KCET (Engg./Med.) 1999]
A)
A conjugate base done
clear
B)
A non-polar solvent done
clear
C)
An acid done
clear
D)
A base done
clear
View Solution play_arrow
-
question_answer130)
The conjugate base in the following reaction \[{{H}_{2}}S{{O}_{4}}+{{H}_{2}}O\] ⇄ \[{{H}_{3}}{{O}^{+}}+HSO_{4}^{-}\] [DCE 1999]
A)
\[{{H}_{2}}O\] done
clear
B)
\[HSO_{4}^{-}\] done
clear
C)
\[{{H}_{3}}{{O}^{+}}\] done
clear
D)
\[S{{O}_{2}}\] done
clear
View Solution play_arrow
-
question_answer131)
An aqueous solution of aluminium sulphate shows [DPMT 2001]
A)
A basic nature done
clear
B)
An acidic nature done
clear
C)
A neutral nature done
clear
D)
Both acidic and basic nature done
clear
View Solution play_arrow
-
question_answer132)
Neutralization of an acid with a base invariably results in the production of [CPMT 1983]
A)
\[{{H}_{3}}{{O}^{+}}\] done
clear
B)
\[O{{H}^{-}}\] done
clear
C)
\[{{H}_{2}}O\] done
clear
D)
\[{{H}^{+}}\] and \[O{{H}^{-}}\] done
clear
View Solution play_arrow
-
question_answer133)
The conjugate acid of \[HPO_{4}^{2-}\]is [MP PMT 1987, 90, 91; EAMCET 1993]
A)
\[{{H}_{2}}PO_{4}^{-}\] done
clear
B)
\[PO_{4}^{3-}\] done
clear
C)
\[{{H}_{3}}P{{O}_{4}}\] done
clear
D)
\[{{H}_{3}}P{{O}_{3}}\] done
clear
View Solution play_arrow
-
question_answer134)
Which of the following is not used as a Lewis acid [MP PET 2000]
A)
\[SnC{{l}_{4}}\] done
clear
B)
\[FeC{{l}_{3}}\] done
clear
C)
\[KCl\] done
clear
D)
\[B{{F}_{3}}\] done
clear
View Solution play_arrow
-
question_answer135)
Orthoboric acid in aqueous medium is [AMU 2000]
A)
Monobasic done
clear
B)
Dibasic done
clear
C)
Tribasic done
clear
D)
All are correct done
clear
View Solution play_arrow
-
question_answer136)
According to Lewis concept which one of the following is not a base [MP PET/PMT 1988; Pb. CET 2003]
A)
\[O{{H}^{-}}\] done
clear
B)
\[{{H}_{2}}O\] done
clear
C)
\[A{{g}^{+}}\] done
clear
D)
\[N{{H}_{3}}\] done
clear
View Solution play_arrow
-
question_answer137)
The aqueous solution of ammonium chloride is [CPMT 1987]
A)
Neutral done
clear
B)
Basic done
clear
C)
Acidic done
clear
D)
Amphoteric done
clear
View Solution play_arrow
-
question_answer138)
In the process \[BC{{l}_{3}}+P{{H}_{3}}\to BC{{l}_{3}}:P{{H}_{3}}\] The Lewis acid is [RPMT 2000]
A)
\[P{{H}_{3}}\] done
clear
B)
\[BC{{l}_{3}}\] done
clear
C)
Both done
clear
D)
None done
clear
View Solution play_arrow
-
question_answer139)
The conjugate acid of \[N{{H}_{3}}\] is [BHU Varanasi 1999; Pb. PMT 2004]
A)
\[N{{H}_{3}}\] done
clear
B)
\[NH_{4}^{+}\] done
clear
C)
\[{{N}_{2}}{{H}_{4}}\] done
clear
D)
\[N{{H}_{2}}OH\] done
clear
View Solution play_arrow
-
question_answer140)
Which halide of nitrogen is least basic [DPMT 2001]
A)
\[NB{{r}_{3}}\] done
clear
B)
\[N{{I}_{3}}\] done
clear
C)
\[NC{{l}_{3}}\] done
clear
D)
\[N{{F}_{3}}\] done
clear
View Solution play_arrow
-
question_answer141)
When \[FeC{{l}_{3}}\] gets soluble in water, then its solution represents which of the characteristics [MP PET/PMT 1988]
A)
Amphoteric done
clear
B)
Acidic done
clear
C)
Basic done
clear
D)
Neutral done
clear
View Solution play_arrow
-
question_answer142)
Lewis acid are those substances [MP PMT 1987]
A)
Which accept electron pair done
clear
B)
Which provide \[{{H}^{+}}\]ion in the solution done
clear
C)
Which give electron pair done
clear
D)
Which accept \[O{{H}^{-}}\]ion done
clear
View Solution play_arrow
-
question_answer143)
The conjugate base of \[HCO_{3}^{-}\] is
A)
\[{{H}_{2}}C{{O}_{3}}\] done
clear
B)
\[CO_{3}^{2-}\] done
clear
C)
\[C{{O}_{2}}\] done
clear
D)
\[{{H}_{2}}O\] done
clear
View Solution play_arrow
-
question_answer144)
In the reaction \[N{{H}_{3}}+B{{F}_{3}}\] ⇌ \[N{{H}_{3}}\to B{{F}_{3}},\,\,B{{F}_{3}}\] is [MP PMT 1989; MHCET 2001]
A)
Lewis acid done
clear
B)
Lewis base done
clear
C)
Neither Lewis acid nor Lewis base done
clear
D)
Lewis acid and Lewis base both done
clear
View Solution play_arrow
-
question_answer145)
The strongest Lewis base in the following [MP PET/PMT 1988]
A)
\[C{{H}_{3}}^{-}\] done
clear
B)
\[{{F}^{-}}\] done
clear
C)
\[N{{H}_{2}}^{-}\] done
clear
D)
\[O{{H}^{-}}\] done
clear
View Solution play_arrow
-
question_answer146)
The aqueous solution of \[CuS{{O}_{4}}\] is [CPMT 1985]
A)
Acidic done
clear
B)
Basic done
clear
C)
Neutral done
clear
D)
Amphoteric done
clear
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question_answer147)
The acid having the highest \[p{{K}_{a}}\] value among the following is [JIPMER 2002]
A)
\[HCOOH\] done
clear
B)
\[C{{H}_{3}}COOH\] done
clear
C)
\[ClC{{H}_{2}}COOH\] done
clear
D)
\[FC{{H}_{2}}COOH\] done
clear
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question_answer148)
The indicator used in the titration of sodium carbonate with sulphuric acid is [DPMT 2001]
A)
Phenolphthalein done
clear
B)
Methyl orange done
clear
C)
Potassium ferrocynide done
clear
D)
Potassium ferricynide done
clear
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question_answer149)
According to Bronsted law, water is a/an [MP PET/PMT 1988]
A)
Base done
clear
B)
Acid done
clear
C)
Acid and base both done
clear
D)
Salt done
clear
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question_answer150)
Which of the following can give base \[O{{H}^{-}}\] [MP PET/PMT 1988]
A)
\[{{H}_{2}}O\] done
clear
B)
\[{{H}_{3}}{{O}^{+}}\] done
clear
C)
\[{{H}_{2}}\] done
clear
D)
\[HCl\] done
clear
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question_answer151)
Conjugate base of \[HBr\]is [MP PET/PMT 1988]
A)
\[{{H}_{2}}B{{r}^{+}}\] done
clear
B)
\[{{H}^{+}}\] done
clear
C)
\[B{{r}^{-}}\] done
clear
D)
\[B{{r}^{-}}\] done
clear
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question_answer152)
Molar heat of neutralization of \[NaOH\] with \[HCl\] in comparison to that of \[KOH\] with \[HN{{O}_{3}}\]is [MP PMT 1989]
A)
Less done
clear
B)
More done
clear
C)
Equal done
clear
D)
Depends on pressure done
clear
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question_answer153)
Which of the following is not a Lewis acid [J & K 2005]
A)
\[B{{F}_{3}}\] done
clear
B)
\[AlC{{l}_{3}}\] done
clear
C)
\[HCl\] done
clear
D)
\[LiAl{{H}_{4}}\] done
clear
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question_answer154)
The solvent which neither accepts proton nor donates proton is called [RPMT 2000]
A)
Amphoteric done
clear
B)
Neutral done
clear
C)
Aprotic done
clear
D)
Amphiprotic done
clear
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question_answer155)
For the reaction in aqueous solution \[Z{{n}^{2+}}+{{X}^{-}}\]⇄ \[Zn{{X}^{+}},\] the \[{{K}_{eq}}\] is greatest when \[X\]is [Pb. PMT 1998]
A)
\[{{F}^{-}}\] done
clear
B)
\[NO_{3}^{-}\] done
clear
C)
\[ClO_{4}^{-}\] done
clear
D)
\[{{I}^{-}}\] done
clear
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question_answer156)
Why are strong acids generally used as standard solutions in acid-base titrations [Pb. PMT 1998]
A)
The \[pH\] at the equivalence point will always be 7 done
clear
B)
They can be used to titrate both strong and weak bases done
clear
C)
Strong acids form more stable solutions than weak acids done
clear
D)
The salts of strong acids do not hydrolysed done
clear
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question_answer157)
For an aqueous solution, the characteristic species of acid is [RPMT 1999]
A)
\[{{H}^{+}}\]ion done
clear
B)
\[{{H}_{3}}{{O}^{+}}\]ion done
clear
C)
\[{{H}_{2}}^{+}\]ion done
clear
D)
\[{{H}_{4}}{{O}^{+}}\]ion done
clear
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question_answer158)
Which is a Lewis base [CPMT 1988; JEE Orissa 2004]
A)
\[{{B}_{2}}{{H}_{6}}\] done
clear
B)
\[LiAl{{H}_{4}}\] done
clear
C)
\[Al{{H}_{3}}\] done
clear
D)
\[N{{H}_{3}}\] done
clear
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question_answer159)
For a weak acid, the incorrect statement is [Pb. PMT 2004]
A)
Its dissociation constant is low done
clear
B)
Its \[p{{K}_{a}}\] is very low done
clear
C)
It is partially dissociated done
clear
D)
Solution of its sodium salt is alkaline in water done
clear
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question_answer160)
Boron halides behave as Lewis acids, because of their [CBSE PMT 1996; BHU 2004]
A)
Ionic nature done
clear
B)
Acidic nature done
clear
C)
Covalent nature done
clear
D)
Electron deficient nature done
clear
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question_answer161)
Would gaseous HCl be considered as an Arrhenius acid [UPSEAT 2004]
A)
Yes done
clear
B)
No done
clear
C)
Not known done
clear
D)
Gaseous HCl does not exist done
clear
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question_answer162)
Which one of the following is called amphoteric solvent [UPSEAT 2004]
A)
Ammonium hydroxide done
clear
B)
Chloroform done
clear
C)
Benzene done
clear
D)
Water done
clear
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question_answer163)
Strongest conjugate base is [DPMT 2004]
A)
\[C{{l}^{-}}\] done
clear
B)
\[B{{r}^{-}}\] done
clear
C)
\[{{F}^{-}}\] done
clear
D)
\[{{I}^{-}}\] done
clear
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question_answer164)
The conjugate base of \[{{H}_{2}}PO_{4}^{-}\] is [AIEEE 2004]
A)
\[{{H}_{3}}P{{O}_{4}}\] done
clear
B)
\[{{P}_{2}}{{O}_{5}}\] done
clear
C)
\[PO_{4}^{3-}\] done
clear
D)
\[HPO_{4}^{2-}\] done
clear
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question_answer165)
Conjugate base of \[HSO_{4}^{-}\] is [MH CET 2004]
A)
\[SO_{4}^{2-}\] done
clear
B)
\[{{H}_{2}}S{{O}_{4}}\] done
clear
C)
\[{{H}_{3}}SO_{4}^{+}\] done
clear
D)
None of these done
clear
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