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Tuesday, September 21, 2021

Class 8 | Science MCQ Online Worksheet | Materials: Metals and Non-Metals - 2

1. Iron is galvanised by coating it with?

Chromium
Sodium
Magnesium
Zinc
2. Which one of the following is more reactive with water?
Sodium
Magnesium
Iron
Copper
3. Boron is
metal
non-metal
metalloid
alkali
4. A mineral from which a metal can be extracted on the commercial scale, economically is called
ore
metalloids
corrosion
metal
5. Which of the following is used in making mirrors?
Sodium
Magnesium
Silver
Zinc
6. Which metal conducts electricity the best?
Silver
Copper
Gold
Aluminium
7. _____________foils are used as packing material.
Silver
Copper
Gold
Aluminium
8. A solution of ______________ in alcohol has antiseptic properties.
bromine
Iodine
chlorine
Magnesium
9. Both _____________ and _______________ find extensive use in the native form as well as compounds.
metal, non-metal
metal, metalloid
alkali, metalloid
alkali, non-metal
10. Nitrates of _____________ find use in photography.
Gold
Silver
Copper
Zinc






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