Hydrogen Test

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Hydrogen Test - 16

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Weekly Quiz Competition

Question 1
4 / -1

The component present in greater proportion in water gas is

A
CH₄

B
CO₂

C
CO

D
H₂
Question 2
4 / -1

Consider the following statements:
I. Atomic hydrogen is obtained by passing hydrogen through an electric arc
II. Hydrogen gas will not reduce heated aluminium oxide
III. Finely divided palladium absorbs large volume of hydrogen gas
IV. Pure nascent hydrogen is best obtained by reacting Na with C₂H₅OH
Which of the above statements is/are correct?

A
I Alone

B
II Alone

C
I, II and III

D
II, III and IV
Question 3
4 / -1

A
1–C, 2–D, 3–B, 4–A

B
1–B, 2–A, 3–C, 4–D

C
1–B, 2-D, 3–C, 4–A

D
1–C, 2–A, 3–B, 4–D
Question 4
4 / -1

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

A
90º

B
180º

C
102º

D
105º

Solution
Question 5
4 / -1

Pure water can be obtained from sea water by

A
Centrifugation

B
Plasmolysis

C
Reverse osmosis

D
Sedimentation
Question 6
4 / -1

Polyphosphates are used as water softening agents because they

A
Form soluble complexes with anionic species

B
Precipitate anionic species

C
Form soluble complexes with cationic species

D
Precipitate cationic species
Question 7
4 / -1

Hydrogen peroxide when added to a solution of KMnO₄ acidified with H₂SO₄

A
Forms water only

B
Acts as an oxidising agent

C
Acts as a reducing agent

D
Reduces H₂SO₄
Question 8
4 / -1

The reagent commonly used to determine hardness of water titrimetrically is

A
Oxalic acid

B
Disodium salt of EDTA

C
Sodium citrate

D
Sodium thiosulphate
Question 9
4 / -1

Which of the following could act as a propellant for rockets?

A
Liquid oxygen + liquid argon

B
Liquid hydrogen + liquid oxygen

C
Liquid nitrogen + liquid oxygen

D
Liquid hydrogen + liquid nitrogen
Question 10
4 / -1

Which one of the following substances has the highest proton affinity?

A
H₂S

B
NH₃

C
PH₃

D
H₂O

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Hydrogen Test - 16

Result

Hydrogen Test - 16

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Question 1

CH4

CO2

CO

H2

Question 2

I Alone

II Alone

I, II and III

II, III and IV

Question 3

1–C, 2–D, 3–B, 4–A

1–B, 2–A, 3–C, 4–D

1–B, 2-D, 3–C, 4–A

1–C, 2–A, 3–B, 4–D

Question 4

90º

180º

102º

105º

Solution

Question 5

Centrifugation

Plasmolysis

Reverse osmosis

Sedimentation

Question 6

Form soluble complexes with anionic species

Precipitate anionic species

Form soluble complexes with cationic species

Precipitate cationic species

Question 7

Forms water only

Acts as an oxidising agent

Acts as a reducing agent

Reduces H2SO4

Question 8

Oxalic acid

Disodium salt of EDTA

Sodium citrate

Sodium thiosulphate

Question 9

Liquid oxygen + liquid argon

Liquid hydrogen + liquid oxygen

Liquid nitrogen + liquid oxygen

Liquid hydrogen + liquid nitrogen

Question 10

H2S

NH3

PH3

H2O

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CH₄

CO₂

H₂

Reduces H₂SO₄

H₂S

NH₃

PH₃

H₂O