Question

(1) Which of the following is not a manure?
(a) Compost
(b) Oilseed cake
(c) Dung manure
(d) Urea
(2) By whom is disease Cholera spread?
(a) Air
(b) Water
(c) Contact
(d) Mosquito
(3) Which metal can react easily with cold water?
(a) Gold
(b) Silver
(c) Magnesium
(d) Sodium
(4) Which of the following is known as 'Black gold'?
(a) Coke
(b) Petroleum
(c) Petrol
(d) Coal tar​

Answer 1

Answer:

1. b) Oilseed cake

2. b) Water

3. d) Sodium

4. b) Petroleum

Explanation:

Please mark me as brainliest