Question

Metals are

(a) soft and brittle

(b) hard and solid

(c) liquid

(d) generally liquid

21. Which substance give heat and light after combustion

a. Flame

b. Fuel

c. Combustion

d. None of these

22. Like fuel the sun also provides heat and light. The process taking place in the sun is called

a. Combustion

b. Nuclear process

c. Burning

d. All of these

23. Coal burns with ______

a. Flame

b. Only glow

c. Both flame and glow

d. None of these​

Answer 1

Hey mate!

Here's your answer:-

1. option b

2. option b

3. option c

4. option c

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