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. If all bullets could not be removed from gunshot injury of a man it may cause poisoning by
2. The mass number of a nucleus is.
3. The freezer in a refrigerator isfitted near the top
4. Symbiotic Bacteria responsible for the fixation of atmospheric nitrogen are present in
5. The substance which does not expand on going from liquid state to solid state is
6. Dry ice is
7. The substance most commonly used as a food preservative is
8. Cement containing excess amount of lime
9. Which of the following is chiefly present in LPG (Liquefied Petroleum Gas) ?
10. The function of sedimentation tank in sewage treatment is to: