Hydrogen Test

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Hydrogen Test - 3

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Weekly Quiz Competition

Question 1
1 / -0

Hydrogen is unique in behaviour because of its

A
high ionization enthalpy

B
extremely small atomic size

C
low reactivity

D
nonmetallic characteristic

Solution

It has extremely small size with no neutron. So it can lose and gain electron which make it unique.
Question 2
1 / -0

In the earth’s atmosphere, hydrogen exists in the form of

A
tritium

B
protium

C
deuterium

D
In the combined form with other elements and compounds

Solution

In the combined form it constitutes 15.4% of the earth crust and the ocean.
Question 3
1 / -0

The following question has four choices out of which ONLY ONE is correct.

Electrolysis of a hydrochloric acid solution produces

A
chlorine at cathode

B
hydrogen at anode

C
hydrogen at cathode

D
chlorine at anode
Question 4
1 / -0

The three isotopes of hydrogen in terms of chemical properties show one of the following properties

A
same rates of reactions because of the same enthalpy of bond dissociation

B
same rates of reactions because of the same mass

C
same rates of reactions because of the same electronic configuration

D
have different rate of reaction

Solution

difference in their rates of reactions is due to the difference in the atomic mass of the isotopes.
Question 5
1 / -0

O₂F₂ molecule resembles H₂O₂ in

A
polarity

B
acid strength

C
structure

D
bond length
Question 6
1 / -0

The following question has four choices out of which ONLY ONE is correct.

Which of the following is not a method of commercial production of dihydrogen?

A
Electrolysis of warm aq. Ba(OH)₂ between nickel electrodes

B
Reaction of impure Zn with dil. HCl

C
Hydrocarbon steam process

D
Water gas shift reaction
Question 7
1 / -0

The giant planets Jupiter and Saturn consist mostly of

A
nitrogen

B
hydrogen

C
oxygen

D
carbondioxide

Solution

The name ‘gas giant’ was coined in 1952 by science fiction writer James Blish to refer to all the giant planets. The giant planets (Jupiter and Saturn) are huge gas balls, which is quite different than Earth and and other three rocky inner planets. Gas giants are primarily composed of gases, such as hydrogen and helium, and a much thicker layer of metallic hydrogen, along with a molten rocky core.

Unlike rocky planets, gas giants do not have a well-defined surface, and there is no clear boundary between where the atmosphere ends and the surface begins. In other words, you wouldn’t be able to land on these planets, as their atmospheres simply become gradually denser towards the core, perhaps with liquid or liquid-like states somewhere in between..
Question 8
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
Question 9
1 / -0

Which of the following cannot be used for water softening?

A
Ca(OH)₂

B
Na₂CO₃.10H₂O

C
(NaPO₃)₆

D
MgCl₂
Question 10
1 / -0

For the synthesis of methanol and a number of hydrocarbons , the compounds used are

A
mixture of CO and H₂

B
mixture of C, Zn and H₂

C
mixture of C and H₂

D
mixture of CO2 and H₂

Solution

A mixture of CO and H2 in any ratio is called synthesis gas or syn gas as it is used in synthesis of methanol and a number of hydrocarbon.

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Re-Attempt Weekly Quiz Competition

Hydrogen Test - 3

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Hydrogen Test - 3

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SHARING IS CARING

Question 1

high ionization enthalpy

extremely small atomic size

low reactivity

nonmetallic characteristic

Solution

Question 2

tritium

protium

deuterium

In the combined form with other elements and compounds

Solution

Question 3

chlorine at cathode

hydrogen at anode

hydrogen at cathode

chlorine at anode

Question 4

same rates of reactions because of the same enthalpy of bond dissociation

same rates of reactions because of the same mass

same rates of reactions because of the same electronic configuration

have different rate of reaction

Solution

Question 5

polarity

acid strength

structure

bond length

Question 6

Electrolysis of warm aq. Ba(OH)2 between nickel electrodes

Reaction of impure Zn with dil. HCl

Hydrocarbon steam process

Water gas shift reaction

Question 7

nitrogen

hydrogen

oxygen

carbondioxide

Solution

Question 8

Evaporation in a vacuum desiccator

Distillation under reduced pressure

Fractional crystallisation

Sublimation

Question 9

Ca(OH)2

Na2CO3.10H2O

(NaPO3)6

MgCl2

Question 10

mixture of CO and H2

mixture of C, Zn and H2

mixture of C and H2

mixture of CO2 and H2

Solution

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Electrolysis of warm aq. Ba(OH)₂ between nickel electrodes

Ca(OH)₂

Na₂CO₃.10H₂O

(NaPO₃)₆

MgCl₂

mixture of CO and H₂

mixture of C, Zn and H₂

mixture of C and H₂

mixture of CO2 and H₂