Chemistry MCQ: Practice Questions & Answers (Hindi) - Page 22

ChemistryEasyHydrogen

421.

True or false: hydrogen is an energy source.

A

True Statement

B

False Statement

ChemistryEasyHydrogen

422.

The oxide that gives $H_2O_2$ on treatment with dilute $H_2SO_2$ is

A

$PbO_2$

B

$BaO_2 \cdot 8H_2O + O_2$

C

$MnO_2$

D

$TiO_2$

ChemistryEasyHydrogen

423.

The number of $H_2O$ molecules which are involve in Hydrozen bonding in $CuSO_4 \cdot 5H_2O$ molecule itself is

A

$H_3PO_2$

B

$H_3PO_3$

C

$H_3PO_4$

D

$PH_3$

ChemistryEasyHydrogen

424.

The electronic conguration of D (Isotope of Hydrogen)

A

1s2

B

1s22s11

C

1s1

D

1s22s22p1

ChemistryEasyHydrogen

425.

Syn-gas is a mixture of

A

CO+ $N_2$

B

$O_3$

C

CO + $H_2$

D

CO + $H_2CO_3$

ChemistryEasyHydrogen

426.

Select the incorrect statement for $H_2O_2$ structure

A

It is non planar

B

O–O bond length is more in gaseous state than in solid phase

C

Both OH bond are in different plane

D

O–O–H bond angle in gas phase is more than in solid phase

ChemistryEasyHydrogen

427.

Radioactive elements emit alpha, Beta and Gamma rays and are characterised by their halflives. The radioactive isotope of hydrogen is

A

Protium

B

Deuterium

C

Tritium

D

Hydronium

ChemistryEasyHydrogen

428.

$P_4O_{10}$ on hydrolysis produces

A

$H_3PO_2$

B

$H_3PO_3$

C

$H_3PO_4$

D

$PH_3$

ChemistryEasyHydrogen

429.

Only one element of..................forms hydride

A

group 6

B

group 7

C

group 8

D

group 9

ChemistryEasyHydrogen

430.

In what form can you store hydrogen?

A

Gas

B

Liquid

C

Solid

D

All of the above

ChemistryEasyHydrogen

431.

Hydrogen resembles halogens in many respects for which several factors are responsible. Of the following factors which one is most important in this respect?

A

Its tendency to lose an electron to form a cation.

B

Its tendency to gain a single electron in its valence shell to attain stable electronic configuration.

C

Its low negative electron gain enthalpy value.

D

Its small size.

ChemistryEasyHydrogen

432.

Hydrogen peroxide is obtained by the electrolysis of

A

water

B

sulphuric acid

C

hydrochloric acid

D

fused sodium peroxide

ChemistryEasyHydrogen

433.

Hydrogen peroxide is

A

an oxidising agent

B

a reducing agent

C

both an oxidising and a reducing agent

D

neither oxidising nor reducing agent

ChemistryEasyHydrogen

434.

How many hydrogen fueling stations are operational in the U.S.?

A

8

B

100

C

12

D

68

ChemistryEasyHydrogen

435.

How long does it take to fill your cars hydrogen tank at a fueling station?

A

3-5 minutes

B

8 minutes

C

15 minutes

D

about 60 minutes

ChemistryEasyHydrogen

436.

Elements of which of the following group(s) of periodic table do not form hydrides.

A

Groups 7, 8, 9

B

Group 13

C

Groups 15, 16, 17

D

Group 14

ChemistryEasyHydrogen

437.

$D_2O$ has higher value of following physical parameters than $H_2O$ , except

A

Molecular Mass

B

Melting Point

C

Density

D

Dielectric Constant

ChemistryEasyHydrogen

438.

A hydrogen fuel cell is...............times more efficient than an engine

A

1

B

3 - 2

C

8 - 7

D

10

ChemistryEasyHydrocarbons

439.

Removal of ............ from a molecule is called dehydration.

A

base

B

Acid

C

Water

D

none of above

ChemistryEasyHydrocarbons

440.

What is the main component of natural gas?

A

Propane

B

Ethene

C

Methane

D

Ethane

Chemistry : Practice Questions and Answers