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Class 8 | Science MCQ Online Worksheet | Materials: Metals and Non-Metals - 1

1. Name the gas evolved when magnesium reacts with dilute hydrochloric acid.

Chlorine
Oxygen
Hydrogen
Nitrogen
2. Materials having qualities of both metals and non-metals are called?
alloys
metalloids
noble metals
None of the above
3. Which metal reacts readily with cold water?
Gold
Silver
Magnesium
Calcium
4. Metals are
soft and brittle
hard and solid
liquid
generally liquid
5. Which of the following metal is not corroded by air, water and acid?
Gold
Zinc
Copper
Aluminium
6. Which one of the following metals is the most reactive and stored in kerosene?
Iron
Gold
Copper
Potassium
7. Which one of the following metals is the most ductile?
Copper
Silver
Aluminium
Gold
8. Which metal is liquid at room temperature?
Iron
Sodium
Mercury
Calcium
9. Which of the following is the most reactive metal?
Calcium
Potassium
Silver
Gold
10. Which of the following is a liquid at room temperature?
Bromine
Iodine
Iron
Phosphorus






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