-
question_answer1)
Which is used hydrogen generators [CPMT 1999]
A)
NaH done
clear
B)
HI done
clear
C)
\[{{S}_{6}}{{H}_{3}}\] done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer2)
Metal hydride on treatment with water gives [Bihar CEE 1995]
A)
\[{{H}_{2}}{{O}_{2}}\] done
clear
B)
\[{{H}_{2}}O\] done
clear
C)
Acid done
clear
D)
Hydrogen done
clear
View Solution play_arrow
-
question_answer3)
Hydrogen burns in air with a [RPET 2003]
A)
Light bluish flame done
clear
B)
Yellow flame done
clear
C)
Green flame done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer4)
Which pair does not show hydrogen isotopes [UPSEAT 2003]
A)
Ortho hydrogen and para hydrogen done
clear
B)
Protium and deuterium done
clear
C)
Deuterium and tritium done
clear
D)
Tritium and protium done
clear
View Solution play_arrow
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question_answer5)
Which is distilled first [Pb. PMT 2002]
A)
Liquid \[C{{O}_{2}}\] done
clear
B)
Liquid \[{{N}_{2}}\] done
clear
C)
Liquid \[{{O}_{2}}\] done
clear
D)
Liquid \[{{H}_{2}}\] done
clear
View Solution play_arrow
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question_answer6)
On reaction with Mg, very dilute nitric acid produces [CPMT 2003]
A)
\[N{{H}_{3}}\] done
clear
B)
Nitrous oxide done
clear
C)
Nitric oxide done
clear
D)
Hydrogen done
clear
View Solution play_arrow
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question_answer7)
Among the following, identify the compound which cannot act as both oxidising and reducing agents [AMU 2002]
A)
\[{{H}_{2}}{{O}_{2}}\] done
clear
B)
\[{{H}_{2}}\] done
clear
C)
\[S{{O}_{2}}\] done
clear
D)
\[C{{l}_{2}}\] done
clear
View Solution play_arrow
-
question_answer8)
Which of the following reaction produces hydrogen [AIIMS 2002]
A)
\[Mg+{{H}_{2}}O\] done
clear
B)
\[Ba{{O}_{2}}+HCl\] done
clear
C)
\[{{H}_{2}}{{S}_{4}}{{O}_{8}}+{{H}_{2}}O\] done
clear
D)
\[N{{a}_{2}}{{O}_{2}}+2HCl\] done
clear
View Solution play_arrow
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question_answer9)
Hydrogen resembles in many of its properties [MH CET 2001]
A)
Halogen done
clear
B)
Alkali metals done
clear
C)
Both a and b done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer10)
Ortho and para hydrogen differ in [AFMC 2001]
A)
Proton spin done
clear
B)
Electron spin done
clear
C)
Nuclear charge done
clear
D)
Nuclear reaction done
clear
View Solution play_arrow
-
question_answer11)
Action of water or dilute mineral acids on metals can give [Kerala (Med.) 2002]
A)
Monohydrogen done
clear
B)
Tritium done
clear
C)
Dihydrogen done
clear
D)
Trihydrogen done
clear
View Solution play_arrow
-
question_answer12)
Hydrogen from HCl can be prepared by [Pb. CET 1997]
A)
Mg done
clear
B)
Cu done
clear
C)
P done
clear
D)
Pt. done
clear
View Solution play_arrow
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question_answer13)
Which of the following can adsorb largest volume of hydrogen gas
A)
Finely divided platinum done
clear
B)
Finely divided nickel done
clear
C)
Colloidal palladium done
clear
D)
Colloidal platinum done
clear
View Solution play_arrow
-
question_answer14)
The nuclei of tritium \[({{H}^{3}})\] atom would contain neutrons
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_answer15)
The colour of hydrogen is [MP PET 2004]
A)
Black done
clear
B)
Yellow done
clear
C)
Orange done
clear
D)
Colourless done
clear
View Solution play_arrow
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question_answer16)
Ordinary hydrogen at room temperature is a mixture of
A)
75% of o-Hydrogen + 25% of p-Hydrogen done
clear
B)
25% of o-Hydrogen + 75% of p-Hydrogen done
clear
C)
50% of o-Hydrogen + 50% of p-Hydrogen done
clear
D)
1% of o-Hydrogen + 99% of p-Hydrogen done
clear
View Solution play_arrow
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question_answer17)
Hydrogen cannot reduce
A)
Hot CuO done
clear
B)
\[F{{e}_{2}}{{O}_{3}}\] done
clear
C)
Hot \[Sn{{O}_{2}}\] done
clear
D)
Hot \[A{{l}_{2}}{{O}_{3}}\] done
clear
View Solution play_arrow
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question_answer18)
Hydrogen does not combine with
A)
Antimony done
clear
B)
Sodium done
clear
C)
Bismuth done
clear
D)
Helium done
clear
View Solution play_arrow
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question_answer19)
The adsorption of hydrogen by metals is called [EAMCET 1999; Manipal PMT 1999]
A)
Dehydrogenation done
clear
B)
Hydrogenation done
clear
C)
Occlusion done
clear
D)
Adsorption done
clear
View Solution play_arrow
-
question_answer20)
Which of the following produces hydrolith with dihydrogen
A)
Mg done
clear
B)
Al done
clear
C)
Cu done
clear
D)
Ca done
clear
View Solution play_arrow
-
question_answer21)
The metal which displaces hydrogen from a boiling caustic soda solution is
A)
As done
clear
B)
Zn done
clear
C)
Mg done
clear
D)
Fe done
clear
View Solution play_arrow
-
question_answer22)
Metals like platinum and palladium can absorb large volumes of hydrogen under special conditions. Such adsorbed hydrogen by the metal is known as
A)
Adsorbed hydrogen done
clear
B)
Occluded hydrogen done
clear
C)
Reactive hydrogen done
clear
D)
Atomic hydrogen done
clear
View Solution play_arrow
-
question_answer23)
Which is poorest reducing agent
A)
Nascent hydrogen done
clear
B)
Atomic hydrogen done
clear
C)
Dihydrogen done
clear
D)
All have same reducing strength done
clear
View Solution play_arrow
-
question_answer24)
The sum of protons, electrons and neutrons in the heaviest isotope of hydrogen is
A)
6 done
clear
B)
5 done
clear
C)
4 done
clear
D)
3 done
clear
View Solution play_arrow
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question_answer25)
Number of nucleons in \[{{D}_{2}}\] molecule is
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_answer26)
An ionic compound is dissolved simultaneously in heavy water and simple water. Its solubility is
A)
Larger in heavy water done
clear
B)
Smaller in heavy water done
clear
C)
Solubility is same in both done
clear
D)
Smaller in simple water done
clear
View Solution play_arrow
-
question_answer27)
Ortho-hydrogen and para-hydrogen resembles in which of the following property
A)
Thermal conductivity done
clear
B)
Magnetic properties done
clear
C)
Chemical properties done
clear
D)
Heat capacity done
clear
View Solution play_arrow
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question_answer28)
The difference between heat of adsorption of ortho and para hydrogen is
A)
\[0.4kJ\text{ }mo{{l}^{1}}\] done
clear
B)
\[0.8kJ\text{ }mo{{l}^{1}}\] done
clear
C)
Zero done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer29)
Hydrogen ion \[{{H}^{-}}\] is isoelectronic with
A)
Li done
clear
B)
He done
clear
C)
\[{{H}^{+}}\] done
clear
D)
\[L{{i}^{-}}\] done
clear
View Solution play_arrow
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question_answer30)
Hydrogen can be fused to form helium at [AFMC 2005]
A)
High temperature and high pressure done
clear
B)
High temperature and low pressure done
clear
C)
Low temperature and high pressure done
clear
D)
Low temperature and low pressure done
clear
View Solution play_arrow
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question_answer31)
Hydrogen can be prepared by mixing steam, and water gas at 500°C in the presence of \[F{{e}_{3}}{{O}_{4}}\] and \[C{{r}_{2}}{{O}_{3}}\]. This process is called
A)
Nelson process done
clear
B)
Serpeck?s process done
clear
C)
Bosch process done
clear
D)
Parke?s process done
clear
View Solution play_arrow
-
question_answer32)
Which of the following metal do not liberate hydrogen from dilute hydrochloric acid
A)
Zn done
clear
B)
Mg done
clear
C)
Fe done
clear
D)
Au done
clear
View Solution play_arrow
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question_answer33)
An element reacts with hydrogen to form a compound A which on treatment with water liberates hydrogen gas. The element can be
A)
Nitrogen done
clear
B)
Chlorine done
clear
C)
Selenium done
clear
D)
Calcium done
clear
View Solution play_arrow
-
question_answer34)
Hydrogen combines with other elements by
A)
Losing an electron done
clear
B)
Gaining an electron done
clear
C)
Sharing an electron done
clear
D)
Losing, gaining or sharing electron done
clear
View Solution play_arrow
-
question_answer35)
Which of the following explanation is best for not placing hydrogen with alkali metals or halogen
A)
The ionization energy of hydrogen is high for group of alkali metals or halogen done
clear
B)
Hydrogen can form compounds done
clear
C)
Hydrogen is a much lighter element than the alkali metals or halogens done
clear
D)
Hydrogen atom does not contain any neutron done
clear
View Solution play_arrow
-
question_answer36)
Which of the following terms is not correct for hydrogen
A)
Its molecule is diatomic done
clear
B)
It exists both as \[{{H}^{+}}\] and \[{{H}^{-}}\] in different chemical compounds done
clear
C)
It is the only species which has no neutrons in the nucleus done
clear
D)
Heavy water is unstable because hydrogen is substituted by its isotope deuterium done
clear
View Solution play_arrow
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question_answer37)
When electric current is passed through an ionic hydride in the molten state
A)
Hydrogen is liberated at the anode done
clear
B)
Hydrogen is liberated at the cathode done
clear
C)
No reaction takes place done
clear
D)
Hydride ion migrates towards cathode done
clear
View Solution play_arrow
-
question_answer38)
Which of the halogen has maximum affinity for hydrogen
A)
\[{{F}_{2}}\] done
clear
B)
\[C{{l}_{2}}\] done
clear
C)
\[B{{r}_{2}}\] done
clear
D)
\[{{I}_{2}}\] done
clear
View Solution play_arrow
-
question_answer39)
Which of the following statements is most applicable to hydrogen
A)
It can act as a reducing agent done
clear
B)
It can act as an oxidising agent done
clear
C)
It can act both as oxidising and reducing agent done
clear
D)
It can neither act as oxidising nor as a reducing agent done
clear
View Solution play_arrow
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question_answer40)
Hydrogen is
A)
Electropositive done
clear
B)
Electronegative done
clear
C)
Both electropositive as well as electronegative done
clear
D)
Neither electropositive nor electronegative done
clear
View Solution play_arrow
-
question_answer41)
Ionization energy of hydrogen is
A)
Equal to that of chlorine done
clear
B)
Lesser than that of chlorine done
clear
C)
Slightly higher than that of chlorine done
clear
D)
Much higher than that of chlorine done
clear
View Solution play_arrow
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question_answer42)
Hydrogen acts as a reducing agent and thus resembles
A)
Halogen done
clear
B)
Noble gas done
clear
C)
Radioactive elements done
clear
D)
Alkali metals done
clear
View Solution play_arrow
-
question_answer43)
Which position for hydrogen explain all its properties
A)
At the top of halogen done
clear
B)
At the top of alkali metals done
clear
C)
At the top of carbon family done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer44)
Hydrogen readily combines with non-metals and thus it shows its
A)
Electronegativity character done
clear
B)
Electropositive character done
clear
C)
Both a and b done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer45)
The oxidation states shown by hydrogen are
A)
-1 only done
clear
B)
Zero only done
clear
C)
+1, -1, 0 done
clear
D)
+1 only done
clear
View Solution play_arrow
-
question_answer46)
Hydrogen readily combines with metals and thus shows its
A)
Electropositive character done
clear
B)
Electronegative character done
clear
C)
Both a and b done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer47)
Electrolysis of fused sodium hydride liberate hydrogen at the
A)
Anode done
clear
B)
Cathode done
clear
C)
Cathode and anode both done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer48)
Protonic acid is
A)
A compound that form solvated hydrogen ion in polar solvent done
clear
B)
An acid which accepts the proton done
clear
C)
A compound that forms hydride ion in polar solvent done
clear
D)
An acid which donates the proton done
clear
View Solution play_arrow
-
question_answer49)
In all its properties, hydrogen resembles
A)
Alkali metals only done
clear
B)
Halogen only done
clear
C)
Both alkali metals and halogens done
clear
D)
Neither alkali metals nor halogens done
clear
View Solution play_arrow
-
question_answer50)
Hydrogen molecule differs from chlorine molecule in the following respect
A)
Hydrogen molecule is non-polar but chlorine molecule is polar done
clear
B)
Hydrogen molecule is polar while chlorine molecule is non-polar done
clear
C)
Hydrogen molecule can form intermolecular hydrogen bonds but chlorine molecule does not done
clear
D)
Hydrogen molecule cannot participate in coordination bond formation but chlorine molecule can done
clear
View Solution play_arrow
-
question_answer51)
Which of the following statements concerning protium, deuterium and tritium is not true
A)
They are isotopes of each other done
clear
B)
They have similar electronic configurations done
clear
C)
They exist in the nature in the ratio of 1 : 2 : 3 done
clear
D)
Their mass numbers are in the ratio of 1 : 2 : 3 done
clear
View Solution play_arrow
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question_answer52)
When \[S{{O}_{3}}\] is treated with heavy water the product is/are
A)
Deuterium and sulphuric acid done
clear
B)
Deuterium and sulphurous acid done
clear
C)
Only deuterium done
clear
D)
Dideuterosulphuric acid done
clear
View Solution play_arrow
-
question_answer53)
Hydrogen has three isotopes, the number of possible diatomic molecules will be
A)
2 done
clear
B)
6 done
clear
C)
9 done
clear
D)
12 done
clear
View Solution play_arrow
-
question_answer54)
In which of the compounds does hydrogen have an oxidation state of -1
A)
\[C{{H}_{4}}\] done
clear
B)
\[N{{H}_{3}}\] done
clear
C)
HCl done
clear
D)
\[Ca{{H}_{2}}\] done
clear
View Solution play_arrow
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question_answer55)
Pure hydrogen is obtained by carrying electrolysis of
A)
Water containing \[{{H}_{2}}S{{O}_{4}}\] done
clear
B)
Water containing NaOH done
clear
C)
\[Ba{{(OH)}_{2}}\] solution done
clear
D)
KOH solution done
clear
View Solution play_arrow
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question_answer56)
In Bosch?s process which gas is utilised for the production of hydrogen gas
A)
Producer gas done
clear
B)
Water gas done
clear
C)
Coal gas done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer57)
Deuterium differs from hydrogen in
A)
Chemical properties done
clear
B)
Physical properties done
clear
C)
Both physical and chemical properties done
clear
D)
Radioactive properties done
clear
View Solution play_arrow
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question_answer58)
Tritium undergoes radioactive decay giving
A)
a-particles done
clear
B)
b-particles done
clear
C)
Neutrons done
clear
D)
g-rays done
clear
View Solution play_arrow
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question_answer59)
The gas used in the hydrogenation of vegetable oils in the presence of nickel as catalyst is
A)
Methane done
clear
B)
Ethane done
clear
C)
Ozone done
clear
D)
Hydrogen done
clear
View Solution play_arrow
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question_answer60)
The conversion of atomic hydrogen into ordinary hydrogen is
A)
Exothermic change done
clear
B)
Endothermic change done
clear
C)
Nuclear change done
clear
D)
Photochemical change done
clear
View Solution play_arrow
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question_answer61)
The name hydrogen was given by
A)
Cavendish done
clear
B)
Lavoisier done
clear
C)
Urey done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer62)
The ratio \[{{C}_{p}}/{{C}_{v}}\] for \[{{H}_{2}}\] is
A)
1.40 done
clear
B)
1.67 done
clear
C)
1.33 done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer63)
Triatomic hydrogen is called
A)
Deuterium done
clear
B)
Hyzone done
clear
C)
Ortho form done
clear
D)
Hydronium ion done
clear
View Solution play_arrow
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question_answer64)
\[LiAl{{H}_{4}}\] is obtained by reacting an excess of ?. With an ethereal solution of \[AlC{{l}_{3}}\]
A)
LiCl done
clear
B)
LiH done
clear
C)
Li done
clear
D)
LiOH done
clear
View Solution play_arrow
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question_answer65)
Alkali metal hydrides react with water to give
A)
Acidic solution done
clear
B)
Basic solution done
clear
C)
Neutral solution done
clear
D)
Hydride ion done
clear
View Solution play_arrow
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question_answer66)
Ionic hydrides are usually
A)
Good electrically conductors when solid done
clear
B)
Easily reduced done
clear
C)
Good reducing agents done
clear
D)
Liquid at room temperature done
clear
View Solution play_arrow
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question_answer67)
When \[NaB{{H}_{4}}\] is dissolved in water
A)
It decomposes with the evolution of \[{{H}_{2}}\] done
clear
B)
\[N{{a}^{+}}\] and \[BH_{4}^{-}\] are formed which are stable done
clear
C)
\[BH_{4}^{-}\] ions formed initially decompose to produce \[O{{H}^{-}}\] ions, which prevent further decomposition done
clear
D)
NaH and \[{{B}_{2}}{{H}_{6}}\] are produced done
clear
View Solution play_arrow
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question_answer68)
Systematic name of \[{{H}_{2}}O\](oxide of hydrogen) is
A)
Water done
clear
B)
Hydrogen oxide done
clear
C)
Oxidane done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer69)
Group 2 hydrides with significant covalent character is/are
A)
\[Be{{H}_{2}}\] done
clear
B)
\[Mg{{H}_{2}}\] done
clear
C)
Both a and b done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer70)
Limiting compositions of f-block hydrides are
A)
\[M{{H}_{2}}\] and \[M{{H}_{3}}\] done
clear
B)
\[M{{H}_{3}}\] and \[M{{H}_{5}}\] done
clear
C)
\[M{{H}_{2}}\] and \[M{{H}_{8}}\] done
clear
D)
\[M{{H}_{2}}\] and \[M{{H}_{6}}\] done
clear
View Solution play_arrow
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question_answer71)
Hydrogen directly combines with [Roorkee Entrance 1990]
A)
Au done
clear
B)
Cu done
clear
C)
Ni done
clear
D)
Ca done
clear
View Solution play_arrow
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question_answer72)
Chemical A is used for water softening to remove temporary hardness. A reacts with sodium carbonate to generate caustic soda. When \[C{{O}_{2}}\] is bubbled through a solution of A, it turns cloudy. What is the chemical formula of A [Pb. CET 1990; AIIMS 1999]
A)
\[CaC{{O}_{3}}\] done
clear
B)
CaO done
clear
C)
\[Ca{{(OH)}_{2}}\] done
clear
D)
\[Ca{{(HC{{O}_{3}})}_{2}}\] done
clear
View Solution play_arrow
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question_answer73)
When same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide solution the ratio of volumes of hydrogen evolved is [CPMT 1991]
A)
1 : 1 done
clear
B)
1 : 2 done
clear
C)
2 : 1 done
clear
D)
9 : 4 done
clear
View Solution play_arrow
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question_answer74)
Which one of the following substances is used in the laboratory for a fast drying of neutral gases [CBSE PMT 1992]
A)
Phosphorus pentoxide done
clear
B)
Active charcoal done
clear
C)
Anhydrous calcium chloride done
clear
D)
\[N{{a}_{3}}P{{O}_{4}}\] done
clear
View Solution play_arrow
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question_answer75)
Which is the lightest gas [CPMT 1993]
A)
Nitrogen done
clear
B)
Helium done
clear
C)
Oxygen done
clear
D)
Hydrogen done
clear
View Solution play_arrow
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question_answer76)
The composition of tritium is [UGET Manipal 1995]
A)
1 electron, 1 proton, 1 neutron done
clear
B)
1 electron, 2 protons, 1 neutron done
clear
C)
1 electron, 1 proton, 2 neutrons done
clear
D)
1 electron, 1 proton, 3 neutrons done
clear
View Solution play_arrow
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question_answer77)
The property of hydrogen which distinguishes it from alkali metals is
A)
Its electropositive character done
clear
B)
Its affinity for non-metal done
clear
C)
Its reducing character done
clear
D)
Its non-metallic character done
clear
View Solution play_arrow
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question_answer78)
The hydride ion \[{{H}^{-}}\] is a stronger base than its hydroxide ion \[O{{H}^{-}}\]. Which of the following reactions will occur if sodium hydride (NaH) is dissolved in water [CBSE PMT 1997]
A)
\[{{H}^{-}}(aq)+{{H}_{2}}O\to {{H}_{3}}{{O}^{-}}(aq)\] done
clear
B)
\[{{H}^{-}}(aq)+{{H}_{2}}O(l)\to O{{H}^{-}}(aq)+{{H}_{2}}(g)\] done
clear
C)
\[{{H}^{-}}(aq)+{{H}_{2}}O(l)\to \text{No reaction}\] done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer79)
Hydrogen accepts an electron to form inert gas configuration. In this it resembles [Pb. PMT 1997]
A)
Halogen done
clear
B)
Alkali metals done
clear
C)
Chalcogens done
clear
D)
Alkaline earth metals done
clear
View Solution play_arrow
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question_answer80)
Which of the following is correct for hydrogen [AFMC 1997; BHU 1997]
A)
It can form bonds in +1 as well as -1 oxidation state done
clear
B)
It is always collected at cathode done
clear
C)
It has a very high ionization potential done
clear
D)
It has same electronegativity as halogens done
clear
View Solution play_arrow
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question_answer81)
Which of the following will not displace hydrogen [Pb. PMT 1999]
A)
Ba done
clear
B)
Pb done
clear
C)
Hg done
clear
D)
Sn done
clear
View Solution play_arrow
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question_answer82)
Which of the following gas is insoluble in water [Pb. CET 2003]
A)
\[S{{O}_{2}}\] done
clear
B)
\[N{{H}_{3}}\] done
clear
C)
\[{{H}_{2}}\] done
clear
D)
\[C{{O}_{2}}\] done
clear
View Solution play_arrow
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question_answer83)
Which element forms maximum compound in chemistry [Pb. CET 2004]
A)
\[O\] done
clear
B)
\[H\] done
clear
C)
\[Si\] done
clear
D)
\[C\] done
clear
View Solution play_arrow
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question_answer84)
Hydrogen is not obtained when zinc reacts with [J & K 2005]
A)
Cold water done
clear
B)
Hot \[NaOH\] solution done
clear
C)
Conc. sulphuric acid done
clear
D)
dilute \[HCl\] done
clear
View Solution play_arrow