The most abundant element in the universe is _________.

(a)

aluminium

(b)

mica

(c)

dihydrogen

(d)

nitrogen

The number of neutrons in  hydrogen atom is ___________.

(a)

three

(b)

two

(c)

one

(d)

zero

_____________ is known as heavy hydrogen.

(a)

protium

(b)

deuterium

(c)

tritium

(d)

both a and b

Deuterium consist of _____________

(a)

one electron, two proton, three neutron

(b)

one electron, one proton, one neutron

(c)

two electron, one proton, one neutron

(d)

three electron, two proton, one neutron

The radioactive isotope of hydrogen is __________

(a)

protium

(b)

deuterium

(c)

tritium

(d)

nascent hydrogen

The radioactive isotope used in illumination of wrist watches instead of Radium is ___________

(a)

₁T³

(b)

₁D²

(c)

₁₀Ne²¹

(d)

₂He³

The half life period of Tritium is ___________

(a)

12.33 secs

(b)

12.33 mins

(c)

12.33 hrs

(d)

12.33 years

Ammonia is manufactured by __________ process.

(a)

Contact

(b)

Bergius

(c)

Haber's

(d)

none of the above

___________ torches is/are used in cutting and welding of a steel.

(a)

Oxy acetylene

(b)

Oxy hydrogen

(c)

both a and b

(d)

neither a nor b

Hydrogen is used in _________

(a)

hydrogenation of oils

(b)

fuel cells

(c)

gas bags for air ships

(d)

all the above

Match the list I with list II and select the correct answer using the code given below

List I		List II
A	Protium	1	Radio active
B	Tritum	2	Aligned nuclear spins
C	Ortho hydrogen	3	Opposed nuclear spins
D	Para hydrogen	4	No neutron

(a)

A	B	C	D
1	3	2	4

(b)

A	B	C	D
4	1	2	3

(c)

A	B	C	D
3	1	4	2

(d)

A	B	C	D
2	1	4	3

Which among the following statement/s given below is/ are incorrect regarding hydrogen?
1. It is diatomic in nature
2. Has only one electron in the outermost shell
3. Very good oxidizing agent
4. Does not form hydrides easily

(a)

1,2 & 3

(b)

only 4

(c)

only 3

(d)

only 2

The conversion of atomic hydrogen to dihydrogen is a __________ change.

(a)

endothermic

(b)

exothermic

(c)

photochemical

(d)

nuclear

\({ CO }_{ (g) }+{ { H }_{ 2 }O }_{ (g) }\ \overset { 400C }{ \underset { X }{ \longrightarrow } } { CO }_{ 2(g) }+{ H }_{ 2(g) }\ \)'X' is_____________

(a)

Nickel

(b)

Iron

(c)

Iron oxide

(d)

Vanadiumpenta oxide

Hydrogen bomb is based on the principle of ____________

(a)

fission

(b)

fusion

(c)

both a and b

(d)

neither a nor b

Hydrogen can be obtained from water by reaction with _____________

(a)

metal oxides

(b)

non metal oxides

(c)

metals

(d)

metal hydrides

Hydrogen burns in air with a - flame.

(a)

light blusish

(b)

yellow

(c)

green

(d)

none of these

Which pair are not hydrogen isotopes?

(a)

Ortho and para hydrogen

(b)

Protium and deuterium

(c)

Deuterium and tritium

(d)

Tritium and protium

Ortho and para hydrogen differ in _____________

(a)

proton spin

(b)

electron spin

(c)

nuclear charge

(d)

both b and c

___________ is considered as the potential alternative fuel of the future.

(a)

hydrogen

(b)

gasoline

(c)

biodiesel

(d)

propane

The ionisation energy of hydrogen is higher than alkali metals. Pick out the correct reason for the above statement.

(a)

Because of smaller size of H.

(b)

Presence of 1e- in outermost shell

(c)

Presence of one proton in its nucleus

(d)

Absence of neutrons.

Hydrogen accepts an electron to attain the inert gas configuration. In this way it resembles __________

(a)

chalcogens

(b)

halogens

(c)

transition metals

(d)

alkali metals

Hydrogen acts as a reducing agent and thus resembles ______________

(a)

halogens

(b)

chalogens

(c)

inert gases

(d)

alkali metals

Which among of the following reaction produces hydrogen?

(a)

Na₂O₂ + HCI

(b)

BaO₂ + HCI

(c)

K₂S₂O₈ + H₂O

(d)

Zn + HCI

In which of the following compounds does hydrogen has an oxidation state of -1?

(a)

CH₄

(b)

NH₃

(c)

HCl

(d)

CaH₂

Which properties of hydrogen are responsible for moderation of the climate and body temperature of living beings?

(a)

High heat of vapour isation

(b)

High heat capacity

(c)

Both (a) and (b)

(d)

None of these

Consider the following statements
1. Water has high dielectric constant.
2. Water has strong intra molecular hydrogen bonding 
3. Water is an Universal solvent
Which of the following statement(s) given above is are not correct

(a)

1 & 3

(b)

only 1

(c)

2 & 3

(d)

only 2

Consider the following statements
1. Hard water forms scum with soap.
2. Hard water lathers easily with soap
3. Hard water is unsuitable for laundry and boilers
Which of the following statement(s) given above is  are correct?

(a)

1 & 3

(b)

only 1

(c)

2 & 3

(d)

only 2

Match the list I with List II and select the correct answer using. the code given below the lists.

List I		List II
A	Calcium hydrogen carbonate	1	Permanent hardness
B	Calcium chloride	2	Chelating
C	Sodium aluminium  silicate	3	Temporary hardness
D	EDTA	4	Ion exchange method

(a)

A	B	C	D
1	3	2	4

(b)

A	B	C	D
4	3	1	2

(c)

A	B	C	D
3	1	4	2

(d)

A	B	C	D
2	1	4	3

Which of the following compounds is used for water softening?

(a)

Ca₃(PO₄)₂

(b)

Na₃PO₄

(c)

NaAlSiO₄

(d)

Na₂HPO₄

The structure of water molecule is __________

(a)

bent

(b)

tetrahedral

(c)

distorted octahedral

(d)

trigonal bi pyramidal

Hardness of water is due to ___________ of calcium and magnesium.

(a)

bicarbonates

(b)

sulphates

(c)

chlorides

(d)

all the above

FeSO₄ contains _________ molecules of water of hydration.

(a)

5

(b)

7

(c)

10

(d)

12

___________ is extensively used as a moderator in nuclear reactors.

(a)

H₂O

(b)

H₂O₂

(c)

D₂O

(d)

D₂O₂

Match the list Iwith List IIand select the correct answer using. the code given below the lists.

List I		List II
A	H2O2	1	SiH4
B	D2O	2	PdH
C	Metallic hydride	3	Bleach
D	Molecular hydride	4	Study of reaction mechanism

(a)

A	B	C	D
1	3	2	4

(b)

A	B	C	D
4	3	1	2

(c)

A	B	C	D
3	4	2	1

(d)

A	B	C	D
2	1	4	3

The H- O- H angle in water molecule is about _____________

(a)

90°

(b)

104.5°

(c)

109°28'

(d)

180°

Hardness of water cannot be removed by ______________

(a)

treating with washing soda

(b)

adding calgon

(c)

boiling

(d)

addition of chlorine

The chemical that is added to water in order to remove temporary hardness is ____________

(a)

Ca(OH)₂

(b)

CaCO₃

(c)

HCl

(d)

CaSO₄

Name the anions responsible for permanent hardness of water ____________

(a)

sulphate

(b)

chloride

(c)

nitrate

(d)

both (a) and (b)

Presence of which cation makes the water hard in nature?

(a)

Ca & Mg

(b)

Na & Mg

(c)

Ca & Na

(d)

Mg & F

Heavy water is __________

(a)

 De-mineralized water

(b)

De-ionized water

(c)

ordinary water containing dissolved salts of heavy metals.

(d)

The compound of heavier isotope of hydrogen with oxygen.

The velocity of neutrons in nuclear reactor is slowed down by _____________

(a)

H₂O

(b)

D₂O

(c)

Zinc rods

(d)

Copper rods

The maximum density of water is observed at ___________

(a)

0^oC

(b)

4^oC

(c)

11.6^oC

(d)

273^oC

Hydrogen peroxide was discovered by _______

(a)

Chadwick

(b)

J.J Thomson

(c)

Urey

(d)

J.L. Thenard

Metal hydrides are ionic, covalent or molecular in nature. Among LiH, NaH, KH, RbH, CsH, the  correct order of increasing ionic character is ______________

(a)

LiH > NaH > CsH > KH > RbH

(b)

LiH

(c)

RbH > CsH > NaH > KH > LiH

(d)

NaH> CsH > RbH > LiH > KH

H₂O₂ acts a ______ agent.

(a)

oxidizing

(b)

reducing

(c)

both reducing and oxidizing

(d)

neither reducing nor oxidizing

H₂O₂ is a ________ acid.

(a)

mono basic

(b)

di basic

(c)

tri basic

(d)

none

LiH is an example of _________ hydride.

(a)

ionic

(b)

saline

(c)

covalent

(d)

both a and b

A example of covalent hydride is ____________

(a)

CaH₂

(b)

CH₄

(c)

TiH

(d)

all the above

___________ is an example of intra molecular hydrogen bonding.

(a)

salicylaldehyde

(b)

hydrogen fluoride

(c)

para nitro phenol

(d)

both a and c