MEDIUM
8th CBSE
IMPORTANT
Earn 100
Copper metal is more reactive than zinc metal.
Important Questions on Materials : Metals and Non-Metals
MEDIUM
8th CBSE
IMPORTANT
Metals always form acidic oxides.
EASY
8th CBSE
IMPORTANT
Zinc is highly ductile in nature.
EASY
8th CBSE
IMPORTANT
Gold is highly malleable in nature.
MEDIUM
8th CBSE
IMPORTANT
Sodium metal is lighter than water.
MEDIUM
8th CBSE
IMPORTANT
Water is an example of a basic oxide.
EASY
8th CBSE
IMPORTANT
The reaction between iron and copper sulphate is a displacement reaction.
MEDIUM
8th CBSE
IMPORTANT
Copper reacts with dilute sulphuric acid to form copper sulphate solution and hydrogen gas.
HARD
8th CBSE
IMPORTANT
Match the statements in column A with those in column B.
| S.No | column A | S.No | column B |
| 1. | An allotrope of carbon that is as tensile as steel. | (a) | Graphite |
| 2. | An allotrope of carbon which has lustre. | (b) | Carbon fibre |
| 3. | A metal that is in the liquid state at room temperature. |
(c) | Tungsten |
| 4. | A metal which is a poor conductor of electricity. |
(d) | Mercury |
| 5. | An oxide of a non-metal dissolves in water. |
(e) | Basic oxide |
| 6. | An oxide of a metal which reacts with acids to form salt and water. |
(f) | Acidic oxide |
