Ammonia Test

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Ammonia Test - 4

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following products will be formed when excess of ammonia reacts with chlorine?

(i) N₂(ii) HCl
(iii) NH₄Cl
(iv) NCl₃

A
(i) and (ii)

B
(i) and (iii)

C
(ii) and (iv)

D
(ii) and (iii)

E
(i) and (iv)
Question 2
1 / -0

Why is liquid ammonia suitable to be used as a refrigerant?

A
Because it has very low heat of vapourisation

B
Because its synthesis is an exothermic process

C
Because it has very high heat of vapourisation

D
Because its decomposition is an endothermic reaction
Question 3
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On warming (NH₄)₂SO₄ with caustic soda, a strong pungent smelling product is formed. Which of the following is that product?

A
H₂SO₄

B
HNO₃

C
NH₃

D
Na₂SO₄
Question 4
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Which of the following statements is not true about ammonia?

A
Ammonia is a reducing agent.

B
Ammonia is a nitrogen hydride.

C
Ammonia is a non-polar covalent molecule.

D
Ammonia is a weak base in aqueous solution.
Question 5
1 / -0

An odourless liquid kept in a beaker gives a strong pungent choking smell, has alkaline taste and shows high solubility in water. Which of the following is that compound?

A
H₂SO₄

B
NaOH

C
CH₃COOCH₃

D
NH₃
Question 6
1 / -0

NH₃ + 3Cl₂ 3HCl + NCl₃
What is the role of ammonia in this reaction?

A
Oxidising agent

B
Reducing agent

C
Strong base

D
Weak acid
Question 7
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Which of the following are true regarding collection of NH₃ gas?

(i) It is collected by downward displacement of air.
(ii) It is collected by upward displacement of water.
(iii) NH₃, being lighter than air, helps in its collection.
(iv) NH₃, being insoluble in water, helps in its collection.

A
(i) and (iii)

B
(i) and (iv)

C
(ii) and (iii)

D
(ii) and (iv)
Question 8
1 / -0

What is the reason for sharp characteristic smell encountered near a decaying heap of organic matter or a toilet?

A
Excessive accumulation of urea at such sites

B
Excessive accumulation of bacteria at such sites

C
Bacterial decomposition of urea at such sites

D
Bacterial decomposition of ammonia at such sites
Question 9
1 / -0

A metallic salt solution reacts with an unknown compound to form ammonium salt and insoluble coloured precipitates. Which of the following can be the unknown reactant?

A
(NH₄)₂SO₄

B
NH₄NO₃

C
NH₃

D
NH₄OH
Question 10
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Why is further heating not required after the reactants are initially heated during industrial preparation of ammonia?

A
Because only initial heat is required to activate the catalyst.

B
Because further heating accelerates the reaction in reverse direction.

C
Because heat evolved during the reaction maintains the temperature.

D
Because initial heat is required to activate promoters.
Question 11
1 / -0

Which of the following is true for ammonia?

A
It turns colour of moist litmus from blue to red.

B
It reacts with acids to form ammonium salts.

C
It decolourise the colour of phenolphthalein.

D
It has tendency to form anions.
Question 12
1 / -0

While preparing NH₃ in laboratory, which of the following drying agents is preferred?

A
H₂SO₄

B
P₂O₅

C
NH₃

D
CaO
Question 13
1 / -0

Why is NH₄NO₃ not used for preparation of NH₃?

A
Because it is very less reactive.

B
Because it is explosive in nature.

C
Because it is very rare compound.

D
Because it undergoes sublimation.
Question 14
1 / -0

An industrial unit was established for manufacturing ammonia. They followed their own standard principles but failed to produce desirable amount of ammonia. Which of the following principles could be the reason for it?

A
They obtained nitrogen gas by fractional distillation of liquid air to produce ammonia.

B
They obtained hydrogen gas from water gas for manufacturing ammonia.

C
They used nitrogen and hydrogen in the ratio 1 : 3 by volumes.

D
They camed out the process at 450^oC - 500°C and 50 - 150 atm.
Question 15
1 / -0

During preparation of aqueous ammonia, a chemist used a narrow ended delivery tube. Which of the following problems could be encountered?

A
Dissolution of NH₃ into water

B
Water from delivery tank could rush into delivery tube

C
Vaporisation of ammonia

D
Rapid absorption of NH₃
Question 16
1 / -0

A catalyst (finely divided iron) was used to improved the speed of reaction in Haber`s process. But the rate of reaction was not used even after using catalyst. What could be the reason behind this?

A
Due to reaction of N₂ and H₂ with the catalyst

B
Due to presence of impurities in N₂ and H₂

C
Due to high temperature (400 - 450°C) kept for the reaction

D
Due to exothermic nature of the reaction
Question 17
1 / -0

Ammonia behaves as a very weak base in its aqueous solution because

A
it easily forms a cation in aqueous solution

B
of lone pair of electrons on nitrogen atom

C
of high electronegativity of nitrogen

D
of non-polar nature of ammonia molecule
Question 18
1 / -0

Which of the following reagents will be required for the formation of urea?
(i) NH₃
(ii) CO₂
(iii) CO
(iv) NH₄OH

A
(i) and (ii)

B
(i) and (iii)

C
(ii) and (iv)

D
(iii) and (iv)

E
(i) and (iv)
Question 19
1 / -0

Which common raw material will be required to manufacture fertilisers, explosives and plastics?

A
CH₄

B
NH₃

C
HNO₃

D
SO₂
Question 20
1 / -0

Why is apparatus kept in inclined position during preparation of Ammonia?

A
To allow collection of NH₃ by downward displacement of air

B
To prevent reaction between products and reactants

C
To prevent water vapour from tickling back and cracking the apparatus

D
To maintain proper population between reactants
Question 21
1 / -0

Which of the following could not be used to test the pressure of NH₃?

A
Characteristic sharp pungent odour of ammonia

B
High solubility of ammonia in water

C
Production of white fumes with HCl

D
Deep brown coloured precipitates with Nessler`s solution
Question 22
1 / -0

Why is funnel-shaped apparatus used for collection of aqueous ammonia?

A
Because it prevents dissolution of NH₃ in water

B
Because it helps in storage of NH₃ in water

C
Because it prevents back suction of water

D
Because it prevents absorption of gas

Question 23

1 / -0

Match the two compounds with their respective properties.

(i) Liquid ammonia	(A) Weak electrolyte
(ii) Liquor ammonia fortis	(B) Weak refrigerant
	(C) Consists of only molecules
	(D) More volatile

(i) – A and B, (ii) – C and D

(i) – A and C, (ii) – B and D

(i) – C and D, (ii) – A and B

(i) – B and C, (ii) A and D

Question 24
1 / -0

Which of the following does not require ammonia?

A
Cleaning tiles and windows

B
Transpiration of liquid hydrogen

C
Production of explosives

D
Removal of impurities from oil production
Question 25
1 / -0

A chemist tried to prepare NH₃ in a laboratory using Ca(OH)₂ and NH₄Cl. He could not prepare NH₃ as expected. Which of the following could be the reason behind this?

A
Keeping the apparatus in a tilted position

B
Taking Ca(OH)₂ and NH₄Cl in the ratio 2 : 3

C
Taking Ca(OH)₂ and NH₄Cl in finely grounded form

D
Using CaO as drying agent
Question 26
1 / -0

When mixture of ammonium gas and oxygen in the ratio 1 : 2 is passed over heated platinum, reddish brown vapours of a gas are observed. Which of the following is this gas?

A
NO

B
NO₂

C
CO₂

D
SO₂

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Ammonia Test - 4

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Question 1

(i) and (ii)

(i) and (iii)

(ii) and (iv)

(ii) and (iii)

(i) and (iv)

Question 2

Because it has very low heat of vapourisation

Because its synthesis is an exothermic process

Because it has very high heat of vapourisation

Because its decomposition is an endothermic reaction

Question 3

H2SO4

HNO3

NH3

Na2SO4

Question 4

Ammonia is a reducing agent.

Ammonia is a nitrogen hydride.

Ammonia is a non-polar covalent molecule.

Ammonia is a weak base in aqueous solution.

Question 5

H2SO4

NaOH

CH3COOCH3

NH3

Question 6

Oxidising agent

Reducing agent

Strong base

Weak acid

Question 7

(i) and (iii)

(i) and (iv)

(ii) and (iii)

(ii) and (iv)

Question 8

Excessive accumulation of urea at such sites

Excessive accumulation of bacteria at such sites

Bacterial decomposition of urea at such sites

Bacterial decomposition of ammonia at such sites

Question 9

(NH4)2SO4

NH4NO3

NH3

NH4OH

Question 10

Because only initial heat is required to activate the catalyst.

Because further heating accelerates the reaction in reverse direction.

Because heat evolved during the reaction maintains the temperature.

Because initial heat is required to activate promoters.

Question 11

It turns colour of moist litmus from blue to red.

It reacts with acids to form ammonium salts.

It decolourise the colour of phenolphthalein.

It has tendency to form anions.

Question 12

H2SO4

P2O5

NH3

CaO

Question 13

Because it is very less reactive.

Because it is explosive in nature.

Because it is very rare compound.

Because it undergoes sublimation.

Question 14

They obtained nitrogen gas by fractional distillation of liquid air to produce ammonia.

They obtained hydrogen gas from water gas for manufacturing ammonia.

They used nitrogen and hydrogen in the ratio 1 : 3 by volumes.

They camed out the process at 450o C - 500°C and 50 - 150 atm.

Question 15

H₂SO₄

HNO₃

NH₃

Na₂SO₄

H₂SO₄

CH₃COOCH₃

NH₃

(NH₄)₂SO₄

NH₄NO₃

NH₃

NH₄OH

H₂SO₄

P₂O₅

NH₃

They camed out the process at 450^oC - 500°C and 50 - 150 atm.

Dissolution of NH₃ into water

Rapid absorption of NH₃

Due to reaction of N₂ and H₂ with the catalyst

Due to presence of impurities in N₂ and H₂

CH₄

NH₃

HNO₃

SO₂

To allow collection of NH₃ by downward displacement of air

Because it prevents dissolution of NH₃ in water

Because it helps in storage of NH₃ in water

Taking Ca(OH)₂ and NH₄Cl in the ratio 2 : 3

Taking Ca(OH)₂ and NH₄Cl in finely grounded form

NO₂

CO₂

SO₂