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Home
Hydrogen Test - 16
Hydrogen Test - 16
Result
Hydrogen Test - 16
/
Score
-
Rank
Time Taken:
-
Question
1/10
4 / -1
The component present in greater proportion in water gas is
Correct
Wrong
Skipped
A
CH
4
Correct
Wrong
Skipped
B
CO
2
Correct
Wrong
Skipped
C
CO
Correct
Wrong
Skipped
D
H
2
Question
2/10
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 C
2
H
5
OH
Which of the above statements is/are correct?
Correct
Wrong
Skipped
A
I Alone
Correct
Wrong
Skipped
B
II Alone
Correct
Wrong
Skipped
C
I, II and III
Correct
Wrong
Skipped
D
II, III and IV
Question
3/10
4 / -1
Correct
Wrong
Skipped
A
1–C, 2–D, 3–B, 4–A
Correct
Wrong
Skipped
B
1–B, 2–A, 3–C, 4–D
Correct
Wrong
Skipped
C
1–B, 2-D, 3–C, 4–A
Correct
Wrong
Skipped
D
1–C, 2–A, 3–B, 4–D
Question
4/10
4 / -1
The H-O-H angle in water molecule is about
Correct
Wrong
Skipped
A
90º
Correct
Wrong
Skipped
B
180º
Correct
Wrong
Skipped
C
102º
Correct
Wrong
Skipped
D
105º
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Solutions
Question
5/10
4 / -1
Pure water can be obtained from sea water by
Correct
Wrong
Skipped
A
Centrifugation
Correct
Wrong
Skipped
B
Plasmolysis
Correct
Wrong
Skipped
C
Reverse osmosis
Correct
Wrong
Skipped
D
Sedimentation
Question
6/10
4 / -1
Polyphosphates are used as water softening agents because they
Correct
Wrong
Skipped
A
Form soluble complexes with anionic species
Correct
Wrong
Skipped
B
Precipitate anionic species
Correct
Wrong
Skipped
C
Form soluble complexes with cationic species
Correct
Wrong
Skipped
D
Precipitate cationic species
Question
7/10
4 / -1
Hydrogen peroxide when added to a solution of KMnO
4
acidified with H
2
SO
4
Correct
Wrong
Skipped
A
Forms water only
Correct
Wrong
Skipped
B
Acts as an oxidising agent
Correct
Wrong
Skipped
C
Acts as a reducing agent
Correct
Wrong
Skipped
D
Reduces H
2
SO
4
Question
8/10
4 / -1
The reagent commonly used to determine hardness of water titrimetrically is
Correct
Wrong
Skipped
A
Oxalic acid
Correct
Wrong
Skipped
B
Disodium salt of EDTA
Correct
Wrong
Skipped
C
Sodium citrate
Correct
Wrong
Skipped
D
Sodium thiosulphate
Question
9/10
4 / -1
Which of the following could act as a propellant for rockets?
Correct
Wrong
Skipped
A
Liquid oxygen + liquid argon
Correct
Wrong
Skipped
B
Liquid hydrogen + liquid oxygen
Correct
Wrong
Skipped
C
Liquid nitrogen + liquid oxygen
Correct
Wrong
Skipped
D
Liquid hydrogen + liquid nitrogen
Question
10/10
4 / -1
Which one of the following substances has the highest proton affinity?
Correct
Wrong
Skipped
A
H
2
S
Correct
Wrong
Skipped
B
NH
3
Correct
Wrong
Skipped
C
PH
3
Correct
Wrong
Skipped
D
H
2
O
Re-attempt
-
Correct (
-
)
Wrong (
-
)
Skipped (
-
)
1
2
3
4
5
6
7
8
9
10
Re-attempt
-
Correct (
-
)
Wrong (
-
)
Skipped (
-
)
1
2
3
4
5
6
7
8
9
10
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