Hydrogen Test

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Hydrogen Test - 3

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Weekly Quiz Competition

Question 1
1 / -0

The conversion of ordinary hydrogen into atomic hydrogen is

A
a highly exothermic reaction

B
a highly endothermic reactio

C
a photo-chemical reaction

D
a nuclear reaction

Solution

The conversion of ordinary hydrogen into atomic hydrogen is a highly endothermic reaction.
Question 2
1 / -0

Heavy water is made by

A
fractional distillation of water

B
exhaustive electrolysis of alkalified water

C
chemical exchange involving ₁¹H & ₁² H

D
all the above methods

Solution

Heavy water is made by 1. fractional distillation of water 2. exhaustive electrolysis of alkalified water 3. chemical exchange involving ₁¹H & ₁² H
Question 3
1 / -0

Heavy water is used in atomic reactors as a

A
fuel

B
coolant

C
moderator

D
fire extinguisher

Solution

Heavy water is used in atomic reactors as a moderator.
Question 4
1 / -0

Heavy water is classified as heavy because it

A
is denser than ordinary water

B
is an oxide of deuterium

C
has a heavy or bad taste

D
is heavily priced

Solution

Heavy water is classified as heavy because it is an oxide of deuterium.
Question 5
1 / -0

In nuclear reactors, the speed of neutrons is suppressed by

A
ordinary water

B
heavy water

C
hard water

D
hydrogen peroxide

Solution

Most reactor designs in existence are thermal reactors and typically use water as a neutron moderator (moderator means that it slows down the neutron to a thermal speed) and as a coolant.
Question 6
1 / -0

In hydrogen peroxide molecule,

A
two hydrogen atoms are connected to one of the oxygen atoms

B
all the four atoms are in the same plane

C
the four atoms are arranged in a non-linear & non-planar manner

D
None of these

Solution

In hydrogen peroxide molecule the four atoms are arranged in a non-linear & non-planar manner.
Question 7
1 / -0

Which of the following processes is not used for concentration of hydrogen peroxide?

A
Evaporation in a vacuum desiccator

B
Distillation under reduced pressure

C
Fractional crystallisation

D
Sublimation

Solution

Sublimation is not used for concentration of hydrogen peroxide. H₂O₂ does not sublime, it decomposes at a temperature below its boiling point.
Question 8
1 / -0

Alkaline hydrogen peroxide reacts with ethylene to give

A
HCOOH

B
CH₃CHO

C
CH₃OH

D
None of these

Solution

Alkaline hydrogen peroxide reacts with ethylene to give ethanol.

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Hydrogen Test - 3

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Hydrogen Test - 3

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Question 1

a highly exothermic reaction

a highly endothermic reactio

a photo-chemical reaction

a nuclear reaction

Solution

Question 2

fractional distillation of water

exhaustive electrolysis of alkalified water

chemical exchange involving 11H & 12 H

all the above methods

Solution

Question 3

fuel

coolant

moderator

fire extinguisher

Solution

Question 4

is denser than ordinary water

is an oxide of deuterium

has a heavy or bad taste

is heavily priced

Solution

Question 5

ordinary water

heavy water

hard water

hydrogen peroxide

Solution

Question 6

two hydrogen atoms are connected to one of the oxygen atoms

all the four atoms are in the same plane

the four atoms are arranged in a non-linear & non-planar manner

None of these

Solution

Question 7

Evaporation in a vacuum desiccator

Distillation under reduced pressure

Fractional crystallisation

Sublimation

Solution

Question 8

HCOOH

CH3CHO

CH3OH

None of these

Solution

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chemical exchange involving ₁¹H & ₁² H

CH₃CHO

CH₃OH