Milk tastes sour when it is left in open for some time.This happens due to the formation of
1). Lactic acid
2). Citric acid
3). Acetic acid
4). Carbonic acid
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1. Which of the following is a monoatomic gas?
2. Supercooling is cooling of liquid _____.
3. Aqua regia is a 1:3 mixture by volume of
4. Piped Natural Gas (PNG) is used for
5. The common refrigerant in domestic refrigerator is
6. The heat required to raise the temperature of body by 1 K is called
7. Which of the following is an ore of iron?
10. Silver halides are used in photographic plates because they are