Question

3. Oxidation involves
() gain of electron (ii) loss of electron
(iii) addition of oxygen or electronegative element
(iv) removal of hydrogen or electropositive element
(a) (i), (ii), (iii) (b)(ii), (iii), (iv)
(c) (i), (iii), (iv) (d) (i), (ii), (iv)
4. The brown gas evolved on heating of copper nitrate is​

Answer 1

Explanation:

the answer to question 3 is option (c)

Answer 2

Answer:

The answer is a option C