Previous Year Questions
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Hydrogen

- It's good to be well prepared. Go through the previous year questions now.
1
Match the following and identify the correct option.
List 1List 2
(a)(i)
(b)Temporary hardness of water(ii)An electron deficient hydride
(c) (iii)Synthesis gas
(d)(iv)Non-planar structure
A
B
C
D
The method used to remove temporary hardness of water is :
A
Calgon's method
B
Clark's method
C
Ion-exchange method
D
Synthetic resins method
Which of the following statements about hydrogen is incorrect?
This question has multiple correct options
A
Dihydrogen does not act as a reducing agent
B
Hydrogen has three isotopes of which tritium is the most common
C
Hydrogen never acts as a cation in ionic salts
D
Hydronium ion exists freely in solution