The polymer used in making plastic crockery is
1). Decron
2). Nylon
3). Bakelite
4). Melamine
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1. The compound to which H2 does not add is
2. Which gas is used for converting vegetable oils into saturated fats
3. Molybdenite is an ore/mineral of
4. Milk is
6. The bleeding of a wound is stopped by the application of ferric chloride because-
7. Silver halides are used in photographic plates because they are
8. Which of the following is the maximum number of electrons that can be present in M-shell?
9. Which of the following is usually not an air-pollutant?
10. Which variety of coal contains recognisable traces of the original plant material ?