(a – 2)
Sulphuric acid is a strong dehydrating agent.
i. It means sulphuric acid has a property to remove water from any substance.
ii. For example: If sulphuric acid falls on sugar, paper, wood etc., it removes water from it and burns it.
iii. Hence, utmost care is taken while using it.
(b – 4)
Sulphur is used in the preparation of fire crackers.
(c – 1)
Sulphur is used in the bleaching of wooden pulp in the paper industry. Thus, it is a weak bleaching agent.
(d – 3)
Dihydrogen (H2) gas is much lighter than air and also lighter than all other gases. So, it is the lightest gas among all.
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