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Q 1. Water gas is a mixture of
{tex} \mathrm { CO } {/tex} and {tex} \mathrm { H } _ { 2 } \mathrm { O } {/tex}
{tex} \mathrm { O } _ { 2 } {/tex} and {tex} \mathrm { CO } {/tex}
{tex} \mathrm { CO } {/tex} and {tex} \mathrm { N } _ { 2 } {/tex}
{tex} \mathrm { CO } {/tex} and {tex} \mathrm { H } _ { 2 } {/tex}
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Q 2. {tex}10{/tex} volumes of {tex} \mathrm { H } _ { 2 } \mathrm { O } _ { 2 } {/tex} means
{tex} 1 \mathrm { \ ml }\ \mathrm { H } _ { 2 } \mathrm { O } _ { 2 } {/tex} solution gives {tex} 10 \mathrm { ml } \ \mathrm { O } _ { 2 } {/tex} at {tex}\mathrm {NTP}{/tex}
{tex} 1 \mathrm { \ gm } \ \mathrm { H } _ { 2 } \mathrm { O } _ { 2 } {/tex} solution gives {tex} 10 \mathrm { \ ml } \ \mathrm { O } _ { 2 } {/tex} at {tex}\mathrm{NTP}{/tex}
{tex} 1 \mathrm {\ mol } \ \mathrm { H } _ { 2 } \mathrm { O } _ { 2 } {/tex} solution gives {tex} 10 \mathrm {\ ml } \ \mathrm { O } _ { 2 } {/tex} at {tex} \mathrm { NTP } {/tex}
{tex} 1 \mathrm { \ ml }\ \mathrm { H } _ { 2 } \mathrm { O } _ { 2 } {/tex} solution gives {tex} 100 \mathrm { \ ml } \ \mathrm { O } _ { 2 } {/tex} at {tex} \mathrm { NTP } {/tex}
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Q 3. Which among the following is interstitial hydride?
{tex} \mathrm { ScH } _ { 2 } {/tex}
{tex} \mathrm { LaH } _ { 2 } {/tex}
{tex} \mathrm { TiH } _ { 1.7 } {/tex}
All of these
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Q 4. Heavy water is
{tex} \mathrm { H } _ { 2 } \mathrm { O } {/tex} with dissolved {tex} \mathrm { Mg } \left( \mathrm { HCO } _ { 3 } \right) _ { 2 } {/tex}
{tex} \mathrm { D } _ { 2 } \mathrm { O } {/tex}
{tex} \mathrm { D } _ { 2 } \mathrm { O } {/tex} with heavy metal impurities
{tex} \mathrm { H } _ { 2 } \mathrm { O } {/tex} with {tex} \mathrm { CaCO } _ { 3 } {/tex}
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Q 5. Dipole moment of {tex} \mathrm { H } _ { 2 } \mathrm { O } _ { 2 } {/tex} is non-zero as
Two dipole moments are opposite but unequal
Two dipole moments are opposite and equal
Two dipole moments are equal but not at {tex} 180 ^ { \circ } {/tex}
Two dipole moments are equal but non-planar
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Q 6. Hydrogen is evolved by the action of cold dilute {tex}\mathrm{HNO_3}{/tex} on
Fe
Mg or Mn
Cu
AI
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Q 7. Which of the following cation is stable in water?
{tex}\mathrm H ^ { + } {/tex}
{tex} \mathrm { Na } ^ { + } {/tex}
{tex} \mathrm { K } ^ { + } {/tex}
All of these
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Q 8. An orange coloured solution of {tex} \mathrm { K } _ { 2 } \mathrm { Cr } _ { 2 } \mathrm { O } _ { 7 } {/tex} acidified with {tex} \mathrm { H } _ { 2 } \mathrm { SO } _ { 4 } {/tex} and treated with a substance {tex} \mathrm { X } {/tex} gives a blue coloured solution of {tex} \mathrm { CrO } _ { 5 } . {/tex} The substance {tex} \mathrm { X } {/tex} is
{tex} \mathrm { H } _ { 2 } \mathrm { O } {/tex}
{tex}\mathrm {dil. \ HCl}{/tex}
{tex} \mathrm { H } _ { 2 } \mathrm { O } _ { 2 } {/tex}
{tex}\mathrm{conc. HCl}{/tex}
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Q 9. The maximum number of hydrogen bonds formed by a water molecule in ice is:
2
8
1
4
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Q 10. When {tex}\mathrm{1\ mole}{/tex} of {tex}\mathrm{PbS}{/tex} reacts completely with {tex} \mathrm { H } _ { 2 } \mathrm { O } _ { 2 } {/tex}
{tex} \mathrm { H } _ { 2 } {/tex} is liberated
{tex} \mathrm { O } _ { 2 } {/tex} is liberated
{tex}\mathrm{4 \ moles}{/tex} of {tex} \mathrm { H } _ { 2 } \mathrm { O } _ { 2 } {/tex} consumed
Sulphur is converted to sulphite
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Q 11. The term hydride gap refers to which region of periodic table?
Groups 6 to 9
Groups 7 to 9
Groups 7 to 10
Groups 5 to 7
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Q 12. 2-ethyl anthraquinol when oxidised in air produces
{tex} \mathrm { O } _ { 3 } {/tex}
{tex} \mathrm { H } _ { 2 } \mathrm { O }_{2} {/tex}
{tex} \mathrm { H } _ { 2 } \mathrm { O } {/tex}
{tex} \mathrm { C} _ { 2 } \mathrm { H } _ { 5 } \mathrm { OH } {/tex}
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Q 13. Which are the compounds, which can be oxidised and reduced by {tex} \mathrm { H } _ { 2 } \mathrm { O } _ { 2 } {/tex} in acidic and basic medium respectively?
{tex} \left[ \mathrm { K } _ { 2 } \mathrm { O } , \mathrm { NaAlO } _ { 2 } \right] {/tex}
{tex} \left[ \mathrm { KMnO } _ { 4 } , \mathrm { K } _ { 2 } \mathrm { MnO } _ { 4 } \right] {/tex}
{tex} \left\{ \mathrm { K } _ { 4 } \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { 6 } \right] , \mathrm { K } _ { 3 } \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { 6 } \right] \right\} {/tex}
{tex} \left[ \mathrm { K } _ { 3 } \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { 6 } , \mathrm { K } _ { 4 } \mathrm { Fe } ( \mathrm { CN } ) _ { 6 } \right]] \right. {/tex}
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Q 14. Select the incorrect statement
Ortho and para hydrogen are different due to difference in their nuclear spins
Ortho and para hydrogen are different due to difference in their electron spins
Para hydrogen has a lower internal energy than that of ortho hydrogen
Parahydrogen is more stable at lower temperature
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Q 15. Hydride ion is a
Strong conjugate acid of {tex} \mathrm { H } _ { 2 } {/tex}
Strong conjugate base of {tex} \mathrm { H } _ { 2 } {/tex}
Strong conjugate acid of {tex}\mathrm{H^+}{/tex}
Strong conjugate base of {tex}\mathrm{H^-}{/tex}
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Q 16. lonic hydrides react with water to
Give acidic solutions
Give basic solutions
Produce hydride ions
Produce protons
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Q 17. The volume strength of {tex} 3.57 \mathrm { M } {/tex} solution of hydrogen peroxide is
{tex}30{/tex} volume
{tex}40{/tex} volume
{tex}20{/tex} volume
{tex}25{/tex} volume
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Q 18. The oxide that gives H{tex}_2{/tex}O{tex}_2{/tex} on treatment with a dilute acid is :
PbO{tex}_2{/tex}
Na{tex}_2{/tex}O{tex}_2{/tex}
MnO{tex}_2{/tex}
TiO{tex}_2{/tex}
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Q 19. {tex} \mathrm { H } _ { 2 } \mathrm { O } _ { 2 } {/tex} can be obtained when following reacts with {tex} \mathrm { H } _ { 2 } \mathrm { SO } _ { 4 } {/tex} except with
{tex} \mathrm { PbO } _ { 2 } {/tex}
{tex} \mathrm { BaO } _ { 2 } {/tex}
{tex} \mathrm { Na } _ { 2 } \mathrm { O } _ { 2 } {/tex}
{tex} \mathrm { SrO } _ { 2 } {/tex}
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Q 20. Consider the following reactions
{tex} \mathrm { I. } {/tex} {tex} \mathrm { AlH } _ { 3} + \mathrm { H } ^ { - } \rightarrow\mathrm {AlH } _4^ { - } {/tex}
{tex} {/tex} {tex}\mathrm { II. } \mathrm { H } _ { 2 } \mathrm { O } + \mathrm { H } ^ { - } \rightarrow \mathrm { H } _ { 2 } + \mathrm { OH } ^ { - } {/tex}
Select the correct statements based on these reactions.
{tex} \mathrm { H } ^ { - } {/tex} is a Lewis acid in I and Lewis base in II
{tex} \mathrm { H }^{-} {/tex} is a Lewis base in 1 and Bronsted base in II
{tex} \mathrm { H } ^ { - } {/tex} is a Lewis acid in I and Bronsted acid in II
{tex} \mathrm { H } ^ { - } {/tex} is a Lewis base in I and II
