Question

4. Electrolysis of water is a decomposition reaction. The mole ratio of hydrogen and oxygen gases liberated during electrolysis of water is
(A) 1:1
(B) 2:1
(C) 4:1
(D)1:2

5. While performing an activity in the lab students poured phenolphthalein indicator to four different test tubes. A pink colour is observed in test tube containing-
(A) HCL
(B) NaOH
(C) KCL
(D) NaCL​

Answer 1

A) 1.1

5 d) nacl
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