An emulsion is a colloid of a
1). gas in a liquid
2). liquid in a liquid
3). liquid in a gas
4). gas in a solid
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1. Water is not effective in extinguishing a fire caused by petrol because
4. Which of the following is used as a lubricant in heavy machines
5. Acid rain is caused by the?pollution of environment by-
6. The elements with atomic numbers 9, 17, 35, 53, 85 are all
7. The charcoal used to decolourise brown sugar solution is
8. In addition to hydrogen, the other abundant element present on Sun’s surface is
9. Commercially sodium bicarbonate is known as
10. Which drug is used as a Nonsteroidal anti-inflammatory drug?