CBSE Questions for Class 11 Medical Chemistry Hydrogen Quiz 12 - MCQExams.com

Ionic hydride among following is 
  • $$BeH_2$$
  • $$NH_2$$
  • $$CaH_2$$
  • $$CuH_2$$
Match the following 
Sr.NoColumn ISr.NoColumn II
A.$$10$$ vol of $$H_2O_2$$1.Perhydrol
B.$$20$$ vol of $$H_2O_2$$2.$$5.358 N$$
C.$$30$$ vol of $$H_2O_2$$3.$$1.785N$$
D.$$100$$ vol of $$H_2O_2$$4.$$3.57N$$
  • A-3, B-4, C-2, D-1
  • A-1, B-2, C-3, D-4
  • A-1, B-3, C-2, D-4
  • A-4, B-2, C-3, D-1
In  $$O _ { 2 }$$  and  $$H _ { 2 } O _ { 2 },$$  the  $$O - O$$  bond lengths are  $$1.21$$  and  $$1.48\mathring { A } $$  respectively. In ozone, the average   $$O - O$$  bond length is :
  • $$1.28\mathring { A } $$
  • $$1.18\mathring { A } $$
  • $$1.44\mathring { A } $$
  • $$1.52\mathring { A } $$
On shaking $$H_2O_2$$ with acidified potassium dichromate  and ether, etheral layer becomes?
  • Green
  • Blue
  • Red
  • Colourless
Among $$CaH_2, NH_3, NaH$$ and $$B_2H_6$$, which are covalent hydrides?
  • $$NH_3$$ and $$B_2H_6$$
  • $$NaH$$ and $$CaH_2$$
  • $$NaH$$ and $$ NH_3$$
  • $$CaH_2$$ and $$B_2H_6$$
Select the incorrect statement.
  • Water can act as an acid as well as a base
  • During photosynthesis water is oxidised to $$O_2$$
  • In molecular $$CuSO_4.5H_2O$$, all five $$H_2O$$ molecules are hydrogen bonded
  • Density of water is maximum at $$4^oC$$
Hydrogen differ with alkali metals in which of the following aspect ?
  • Formation of halides
  • Formation of oxides
  • Metallic character
  • Atomicity
Which of the following will undergo hydride shift?
Structure of $$H_2O_2$$ is:
  • planar
  • non-planar
  • linear
  • three- dimensional open cage
Which of the following molecule when combines with water,then $$H_2O$$ molecules does attack at central atom?
  • $$PCl_3$$
  • $$NCl_3$$
  • $$ClF_5$$
  • $$CO_2$$
Which of the following statement is false about $$H_2 O_2$$ ?
  • Acts both as oxidising and reducing agent
  • Pale blue liquid
  • Can be oxidised by $$O_3$$
  • Two $$O-H$$ bonds lie in same plane
Among the following in which hydrates $$H_{2}O$$ molecules only occupy the interstitial site?  
  • $$BaCl_{2}.2H_{2}O$$
  • $$[Ni(H_{2}O)_{6}]^{2+}(NO_{3}^{-})_{2}$$
  • $$CuSO_{4}.5H_{2}O$$
  • $$All\ of\ these$$

The $$O-H$$ bond length in $$H_2O$$ is $$xA^o$$. The $$O- H$$ bond length in $$H_2O_2$$ is ?               
  • $$< x$$ $$A^o$$.
  • $$x$$ $$A^o$$.
  • $$ > x$$ $$A^o$$.
  • $$2x$$ $$A^o$$.
Which among the following cannot be used to generate $${{\text{H}}_{\text{2}}}$$? 
  • $${\text{Al}}\,{\text{ + NaOH}}$$
  • $${\text{Zn + NaOH}}\,$$
  • $${\text{Mg + NaOH}}$$
  • $${\text{LiH + }}{{\text{H}}_{\text{2}}}{\text{O}}$$
Property higher for $$H_{2}O$$ than $$H_{2}O_{2}$$
  • Dielectric constant
  • Viscosity
  • Melting point
  • Boiling point
100 volume' hydrogen peroxide is often called:
  • Fentons reagent
  • Anitichlor
  • Hyperol
  • Merck's perhydrol
'Hydride Gap' is referred to which region of the periodic table?
  • Groups 3, 4 and 5
  • Groups 5, 6 and 7
  • Groups 4, 5 and 6
  • Groups 7, 8 and 9
  • Groups 6, 7 and 8.
Which of the following statements are correct?
  • Hydrides of group 13 act as Lewis acids
  • Hydrides of group 14 are electron deficient hydrides
  • Hydrides of group 14 act as Lewis acids
  • Hydrides of group 15 act as Lewis acids
The least stable hydride of $$15^{th}$$ group elements is
  • $$NH_3$$
  • $$PH_3$$
  • $$AsH_3$$
  • $$SbH_3$$
  • $$BiH_3$$
Which one of the following atoms generally does not contain neutrons?
  • Boron
  • Hydrogen
  • Nitrogen
  • Lithium
Which of the following pair behaves strong and weak base hydride :

$$NH_3, PH_3, AsH_3, SbH_3, BiH_3$$
  • $$NH_3, PH_3$$
  • $$NH_3, BiH_3$$
  • $$PH_3, BiH_3$$
  • $$BiH_3, AsH_3$$
lonic hydrides is/are usually :-
  • Good electrically conductors when solid
  • Easily reduced
  • Good reducing agents
  • Liquid at room temperature
The oxygen in hydrogen peroxide which is used in oxidation is bound by ..... bond.
  • electrovalent bond
  • hydrogen bond
  • covalent bound
  • hydrogen bridge bond
Hydride of which of the following element shown the highest tendency of hydrogen storage?
  • N
  • Al
  • Pd
  • Ca
$$H_2O_2$$ is stabilized by 
  • Dust
  • Glass
  • Metals
  • Urea
$$H_2$$ gas can not be prepared by :-
  • $$Be\ +\ NaOH$$
  • $$Na\ +\ NaOH$$
  • $$Mg\ +\ NaOH$$
  • $$By\ B\  and\ C\  method$$
Which of the following represents saline hydrides?
  • $$KH,\,Ca{H_2},\,Ba{H_2}$$
  • $$NaH,Si{H_4},KH$$
  • $$N{H_3},{B_2}{H_6},Al{H_3}$$
  • $$N{H_3},{H_2}O,HF$$
Which of the following pairs will not produce dihydrogen gas ?
  • $$Cu + dil. HCl $$
  • $$Fe + H_2SO_4$$
  • $$Mg + steam$$
  • $$Mg + alcohol$$
Which gas is evolved when potassium carbonate is treated with dilute with $$HCl$$?
  • Hydrogen $$(H_{2})$$
  • Sulphur dioxide $$(SO_{2})$$
  • Carbon monoxide $$(CO)$$
  • Carbon dioxide $$(CO_{2})$$
Which of the following ions does not liberate hydrogen gas on reaction with dilute acids?
  • $${\text{T}}{{\text{i}}^{{\text{2 + }}}}$$
  • $${{\text{V}}^{{\text{2 + }}}}$$
  • $${\text{C}}{{\text{r}}^{{\text{2 + }}}}$$
  • $${\text{M}}{{\text{n}}^{2 + }}$$
Only one element of                forms hydride.
  • group 6
  • group 7
  • group 8
  • group 9
Which of the following statements are correct?
(I) Both melting and boilling points of $$H_{2}O$$ are higher than those of $$H_{2} Te.$$
(II) In both $$N_{2}O_{5}$$ and $$N_{2}O_{4}$$ all $$N-O$$ bond lengths are equivalent.
(III) In both crystalline $$NaHCO_{3}$$ and $$KHCO_{3}$$, $$HCO_{3}^{-}$$ forms only dimeric anion through hydrogen bond.
(IV) Amongst $$B_{2}$$, $$C_{2}$$, $$N_{2}^{-}$$ and $$O_{2}$$, $$N_{2}^{-}$$ and $$ O_{2}$$ on further ionization (losing single electron)
thermodynamically more stable species is formed.
  • (I) and (II)
  • (III) and (IV)
  • (II) and (III)
  • (I) and (IV)
Hydrogen accepts an electron to form inert gas configuration. In this it resembles
  • Halogen
  • Alkali metals
  • Chalcogens
  • Alkaline earth metals
Find the volume of strength of $${ H }_{ 2 }{ O }_{ 2 }$$ solutions prepared by mixing of 250 mL of 3 N $${ H }_{ 2 }{ O }_{ 2 }$$ and 750 mL of 1 N $${ H }_{ 2 }{ O }_{ 2 }$$ solution :-
  • 1.5 V
  • 8.4 V
  • 5.6 V
  • 11.2 V
Which of the following hydrides of the oxygen family shows the lowest boiling points?
  • $${ H }_{ 2 }O$$
  • $${ H }_{ 2 }S$$
  • $${ H }_{ 2 }Se$$
  • $${ H }_{ 2 }Te$$
$$A$$: About $$77\%$$ of industrial dihyducegen is produced from petro-chemicals.
$$R$$: Process of producing producer gas from coal is known as coal gasification as well as water gas shift reaction. 
  • Both Assertion $$\&$$ Reason are true and the reason is the correct explanation of the assertion
  • Both Assertion $$\&$$ Reason are true but the reason is not the correct explanation of the assertion
  • Assertion is true statement but Reason is false.
  • Both Assertion and Reason are false statements.
Which one of the following statements is incorrect?
  • Sodium hydride is ionic.
  • Beryllium chloride is covalent.
  • $${ CCl }_{ 4 }$$ gives a white ppt. with $${ AgNO }_{ 3 }$$ solution
  • Bonds in $$NaCl$$ are non-directional.
Which of the following aqueous solution can not be used as buffer solution?
  • $$NH_{4}OH+NH_{4}CI$$
  • HCN + KCN
  • AgCN
  • $$NH_{4}I$$
Hydrogen is prepared from $${ H } _ { 2 }{ O }$$ by adding:
  • Ca, which acts as reducing agent
  • Al, which acts as oxidising agent
  • Ag, which acts as reducing agent
  • Au, which acts as oxidising agent
Which of the following statement is false?
  • Superoxides give hydrogen peroxide and oxygen with water.
  • $$Cr{ O }_{ 3 }$$ is an acidic oxide.
  • $$Sn{ O }_{ 2 }$$ is an amphoteric oxide.
  • $$K{ O }_{ 2 }$$ is peroxide which with $${ H }_{ 2 }O$$ forms hydrogen peroxide only.
A fresh $$H_{2}O_{2}$$  solution is labelled as 11.35 V.  Calculate its concentration in %w/v?
  • 2.5 %
  • 3.4 %
  • 4.2 %
  • 5.4 %
Which of the following statements do not define the characteristic property of water " water is a universal solvent"? 
  • It can dissolve maximum number of compounds
  • It has very low dielectric constant
  • It has high liquid range
  • All of these
The volume strength of 1.5 N $$\mathrm { H } _ { 2 } \mathrm { O } _ { 2 }$$ solution is:
  • 8.4
  • 4.8
  • 5.2
  • 8.8
The strength of $$\mathrm { H } _ { 2 } \mathrm { O } _ { 2 }$$(g/litre) in 11.2 volume solution of $$\mathrm { H } _ { 2 } \mathrm { O } _ { 2 }$$ is:
  • $$17$$
  • $$51$$
  • $$34$$
  • $$85$$
Match the following 
column-1column-II
A10 vol $${ H }_{ 2 }{ O }_{ 2 }$$1Pehydrol
B 20 vol $${ H }_{ 2 }{ O }_{ 2 }$$25.358 N
C30 vol $${ H }_{ 2 }{ O }_{ 2 }$$31.785 M
D100 vol $${ H }_{ 2 }{ O }_{ 2 }$$43.03 %
  • A-4, B-3, C-2, D-1
  • A-1, B-2, C-3, D-4
  • A-1, B-3, C-2, D-4
  • A-4, B-2, C-3, D-1
The structure of $${ H }_{ 2 }{ O }_{ 2 }$$ is
  • Planar
  • Linear
  • Spherical
  • Nonplanar
The oxide that gives hydrogen peroxide $$({ H }_{ 2 }{ O }_{ 2 })$$ on the treatment with a dilute acid $$({ H }_{ 2 }{ SO }_{ 4 })$$ is 
  • $${ MnO }_{ 2 }$$
  • $${ PbO }_{ 2 }$$
  • $$Na_{ 2 }{ O }_{ 2 }$$
  • $${ TiO }_{ 2 }$$
Hydrogen peroxide is used as
  • An acid only
  • A reductant only
  • An oxidant only
  • An oxidant , a reductant and an acid.
The volume strength of 0.8 N $$ \mathrm { H } _ { 2 } \mathrm { O } _ { 2 } $$ solution is:
  • 4.48
  • 8.96
  • 20.8
  • 5.2
Ammonia gas dissolves in water to form $${NH}_{4}OH$$. In this reaction water acts as:
  • a conjugate base
  • a non polar solvent
  • an acid
  • a base
0:0:1


Answered Not Answered Not Visited Correct : 0 Incorrect : 0

Practice Class 11 Medical Chemistry Quiz Questions and Answers