question_answer 1)
How much of NaOH is required to neutralise 1500 \[c{{m}^{3}}\]of 0.1 \[N\,HCl\] (Na = 23) [KCET 2001]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 2)
How much water should be added to 200 c.c of semi normal solution of \[NaOH\]to make it exactly deci normal [AFMC 1983]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 3)
2.76 g of silver carbonate on being strongly heated yield a residue weighing [Pb. CET 2003]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 4)
In the reaction, \[4N{{H}_{3}}(g)+5{{O}_{2}}(g)\to 4NO(g)+6{{H}_{2}}O(g)\], When 1 mole of ammonia and 1 mole of \[{{O}_{2}}\]are made to react to completion
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 5)
Haemoglobin contains 0.33% of iron by weight. The molecular weight of haemoglobin is approximately 67200. The number of iron atoms (At. wt. of Fe = 56) present in one molecule of haemoglobin is [CBSE PMT 1998]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 6)
What quantity of ammonium sulphate is necessary for the production of \[N{{H}_{3}}\]gas sufficient to neutralize a solution containing 292 g of \[HCl\]? [HCl=36.5; \[{{(N{{H}_{4}})}_{2}}S{{O}_{4}}\]=132; \[N{{H}_{3}}\]=17] [CPMT 1992]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 7)
The percentage of \[{{P}_{2}}{{O}_{5}}\]in diammonium hydrogen phosphate \[{{(N{{H}_{4}})}_{2}}HP{{O}_{4}}\]is [CPMT 1992]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 8)
If \[1\frac{1}{2}\]moles of oxygen combine with Al to form \[A{{l}_{2}}{{O}_{3}}\]the weight of Al used in the reaction is (Al=27) [EAMCET 1980]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 9)
The percentage of Se in peroxidase anhydrous enzyme is 0.5% by weight (atomic weight=78.4). Then minimum molecular weight of peroxidase anhydrous enzyme is [CBSE PMT 2001]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 10)
\[{{H}_{2}}\] evolved at STP on complete reaction of 27 g of Aluminium with excess of aqueous \[NaOH\] would be [CPMT 1991]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 11)
What is the % of \[{{H}_{2}}O\]in \[Fe{{(CNS)}_{3}}.3{{H}_{2}}O\]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 12)
What weight of \[S{{O}_{2}}\]can be made by burning sulphur in 5.0 moles of oxygen
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 13)
What is the normality of a 1 M solution of \[{{H}_{3}}P{{O}_{4}}\] [AIIMS 1982]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 14)
Normality of 2M sulphuric acid is [AIIMS 1992]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 15)
How many g of a dibasic acid (Mol. wt. = 200) should be present in 100 ml of its aqueous solution to give decinormal strength [AIIMS 1992]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 16)
The solution of sulphuric acid contains 80% by weight \[{{H}_{2}}S{{O}_{4}}\]. Specific gravity of this solution is 1.71. Its normality is about [CBSE 1991]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 17)
Mohr's salt is dissolved in dil. \[{{H}_{2}}S{{O}_{4}}\] instead of distilled water to
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 18)
Acidified potassium permanganate solution is decolourised by [MNR 1984]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 19)
Approximate atomic weight of an element is 26.89. If its equivalent weight is 8.9, the exact atomic weight of element would be [DPMT 1984]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 20)
Vapour density of a gas is 22. What is its molecular mass [AFMC 2000]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 21)
Equivalent weight of \[KMn{{O}_{4}}\] acting as an oxidant in acidic medium is [CPMT 1990; MP PET 1999]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 22)
0.16 g of dibasic acid required 25 ml of decinormal NaOH solution for complete neutralisation. The molecular weight of the acid will be [CPMT 1989]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 23)
To neutralise 20 ml of \[M/10\] sodium hydroxide, the volume of \[M/20\] hydrochloric acid required is [Andhra MBBS 1980]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 24)
Hydrochloric acid solutions A and B have concentration of 0.5 N and 0.1 N respectively. The volume of solutions A and B required to make 2 litres of 0.2 N hydrochloric are [KCET 1993]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 25)
5 ml of N HCl, 20 ml of \[N/2\,\,{{H}_{2}}S{{O}_{4}}\] and 30 ml of \[N/3\,\,HN{{O}_{3}}\] are mixed together and volume made to one litre. The normality of the resulting solution is [MNR 1991]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 26)
Under similar conditions of pressure and temperature, 40 ml of slightly moist hydrogen chloride gas is mixed with 20 ml of ammonia gas, the final volume of gas at the same temperature and pressure will be [CBSE PMT 1993]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 27)
\[KMn{{O}_{4}}\] reacts with oxalic acid according to the equation, \[2MnO_{4}^{-}+5{{C}_{2}}O_{4}^{2-}+16{{H}^{+}}\to 2M{{n}^{2+}}+10C{{O}_{2}}+8{{H}_{2}}O\], here 20 ml of 0.1 M \[KMn{{O}_{4}}\] is equivalent to [CBSE PMT 1996]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 28)
In order to prepare one litre normal solution of \[KMn{{O}_{4}}\], how many grams of \[KMn{{O}_{4}}\] are required if the solution is used in acidic medium for oxidation [MP PET 2002]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 29)
What is the concentration of nitrate ions if equal volumes of 0.1 M \[AgN{{O}_{3}}\] and 0.1 M NaCl are mixed together [NCERT 1981; CPMT 1983]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 30)
30 ml of acid solution is neutralized by 15 ml of a 0.2 N base. The strength of acid solution is [CPMT 1986]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 31)
A solution containing \[N{{a}_{2}}C{{O}_{3}}\] and NaOH requires 300 ml of 0.1 N HCl using phenolpthalein as an indicator. Methyl orange is then added to the above titrated solution when a further 25 ml of 0.2 N HCl is required. The amount of NaOH present in solution is \[(NaOH=40,\,N{{a}_{2}}C{{O}_{3}}=106)\] [CPMT 1992]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 32)
In the preceeding question, the amount of \[N{{a}_{2}}C{{O}_{3}}\] present in the solution is [CPMT 1992]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 33)
How many ml of 1 (M) \[{{H}_{2}}S{{O}_{4}}\] is required to neutralise 10 ml of 1 (M) NaOH solution [MP PET 1998; MNR 1982; MP PMT 1987]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 34)
Which of the following cannot give iodometric titrations [AIIMS 1997]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 35)
\[KMn{{O}_{4}}\] reacts with ferrous ammonium sulphate according to the equation \[MnO_{4}^{-}+5F{{e}^{2+}}+8{{H}^{+}}\to M{{n}^{2+}}+5F{{e}^{3+}}+4{{H}_{2}}O\], here 10 ml of 0.1 M \[KMn{{O}_{4}}\] is equivalent to [CPMT 1999]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 36)
\[Ca{{(OH)}_{2}}+{{H}_{3}}P{{O}_{4}}\to CaHP{{O}_{4}}+2{{H}_{2}}O\] the equivalent weight of \[{{H}_{3}}P{{O}_{4}}\] in the above reaction is [Pb. PMT 2004]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 37)
The mass of \[BaC{{O}_{3}}\] produced when excess \[C{{O}_{2}}\] is bubbled through a solution of 0.205 mol \[Ba{{(OH)}_{2}}\] is [UPSEAT 2004]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 38)
The amount of water that should be added to 500 ml of 0.5 N solution of \[NaOH\]to give a concentration of 10 mg per ml is
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 39)
Number of moles of \[KMn{{O}_{4}}\]required to oxidize one mole of \[Fe({{C}_{2}}{{O}_{4}})\]in acidic medium is [Haryana CEE 1996]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 40)
A hydrocarbon contains 86% carbon, 488ml of the hydrocarbon weight 1.68 g at STP. Then the hydrocarbon is an
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 41)
The ratio of amounts of \[{{H}_{2}}S\]needed to precipitate all the metal ions from 100 ml of 1 M \[AgN{{O}_{3}}\]and 100 ml of 1 M \[CuS{{O}_{4}}\]will be
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 42)
An electric discharge is passed through a mixture containing 50 c.c. of \[{{O}_{2}}\]and 50 c.c. of \[{{H}_{2}}\]. The volume of the gases formed (i) at room temperature and (ii) at 1100C will be
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 43)
100 ml of 0.1 N hypo decolourised iodine by the addition of x g of crystalline copper sulphate to excess of KI. The value of ?x? is (molecular wt. of \[CuS{{O}_{4}}.5{{H}_{2}}O\]is 250)
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 44)
How many grams of caustic potash required to completely neutralise 12.6 gm \[HN{{O}_{3}}\]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 45)
If isobutane and n-butane are present in a gas, then how much oxygen should be required for complete combustion of 5 kg of this gas
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 46)
16.8 litre gas containing \[{{H}_{2}}\] and \[{{O}_{2}}\]is formed at NTP on electrolysis of water. What should be the weight of electrolysed water
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 47)
On electrical decomposition of 150 ml dry and pure \[{{O}_{2}}\], 10% of \[{{O}_{2}}\]gets changed to O, then the volume of gaseous mixture after reaction and volume of remaining gas left after passing in turpentine oil will be
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 48)
What should be the weight of 50% HCl which reacts with 100 g of limestone
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 49)
What should be the weight and moles of \[AgCl\]precipitate obtained on adding 500ml of 0.20 M \[HCl\]in 30 g of \[AgN{{O}_{3}}\]solution? (\[AgN{{O}_{3}}\]= 170)
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 50)
A solution of 10 ml \[\frac{M}{10}FeS{{O}_{4}}\]was titrated with \[KMn{{O}_{4}}\]solution in acidic medium. The amount of \[KMn{{O}_{4}}\]used will be [CPMT 1984]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 51)
1.12 ml of a gas is produced at STP by the action of 4.12 mg of alcohol, with methyl magnesium iodide. The molecular mass of alcohol is [Roorkee 1992; IIT 1993]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 52)
The simplest formula of a compound containing 50% of element X (atomic mass 10) and 50% of element Y (atomic mass 20) is [Roorkee 1994]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 53)
A compound contains atoms of three elements in A, B and C. If the oxidation number of A is +2, B is +5 and that of C is ? 2, the possible formula of the compound is [CBSE PMT 2000]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 54)
What will be the volume of \[C{{O}_{2}}\]at NTP obtained on heating 10 grams of (90% pure) limestone [Pb. CET 2001]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 55)
The ratio of the molar amounts of \[{{H}_{2}}S\] needed to precipitate the metal ions from \[20mL\] each of \[1M\ Cd{{(N{{O}_{3}})}_{2}}\] and \[0.5M\ CuS{{O}_{4}}\] is [CPMT 1997]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 56)
\[12g\] of \[Mg\](at. mass 24) will react completely with acid to give [MNR 1985]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 57)
\[1.5\] mol of \[{{O}_{2}}\] combine with \[Mg\] to form oxide \[MgO\]. The mass of \[Mg\] (at. mass 24) that has combined is [KCET 2001]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Solution play_arrow
question_answer 58)
100 g CaCO3 reacts with 1litre 1 N HCl. On completion of reaction how much weight of \[C{{O}_{2}}\] will be obtain [Kerala CET 2005]
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
E)
done
clear
View Solution play_arrow
