Question

2. The product(s) of combustion is/are
a) oxygen and water b) only oxygen
c) Both flame and glow d) None of the
3. Which of the following can be beaten into thin sheets?
a) Zinc
b) Phosphorous c) Sulphur
d) Oxygen
4. The product(s) obtained by destructive distillation of coal is/are
b) coke
c) coal tar
d) All of these
5. Which of the following is not a constituent of petroleum?
a) Lubricating oil
b) Paraffin wax
c) Coke
d) Petrol
6. The non-metal which is liquid at room temperature is
a) Carbon
b) chlorine
c) iodine
d) bromine
7. which one among the following is considered as the cleanest fuel?
a) Kerosene
b) Cowdung cake c) Petrol
d) Hydroger
8. which of the following reacts with cold water vigorously?
a) Sodium
b) Magnesium c) Sulphur
d) Carbon
9. Petroleum was formed from organisms
a) living on the land
b) living in the sea
c) living on the plants​

Answer 1

Explanation:

2) a) I

3) a)zinc

4)c) coal tar

5)b) paraffin wax

6)d) bromine

7)d) hydrogen

8)a) sodium

9)b) living in sea and ocean