General Science Question

DoThe Best
By DoThe Best September 30, 2015 15:24

1. The most important ore of Aluminium is

Bauxite

2. The element present in the largest amount in rocks and minerals is

Silicon

3. An alloy used in making heating elements for electric heating devices is

Nichrome

4. German Silver is an alloy of

Zinc, Copper and Nickel

5. Air is a/an

Mixture

6.Which of the following is the best conductor of Electricity ?

Sea water

7.Balloons are filled with

Helium

8. The charcoal used to decolourise raw sugar is

Wood charcoal

9.The most abundant metal in the earth’s crust is

Aluminium

10. The gas used to extinguish fire is

Carbon dioxide

DoThe Best
By DoThe Best September 30, 2015 15:24
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