answer these question accurate
Answers
1. c.
2. b.
3. c.
4. a.
5. b.
6. a.
7. b.
8. b.
9. really don't Know
Que 40. ....
Answer - Sodium is stored in kerosene as it is a very highly reactive metal. If it is kept in open air, it easily reacts with the oxygen and catches fire.
Que 41. ....
Answer - Black soot which is deposited on kerosene lamps after burning is Known as Lampblack. It is also known as Carbon Black. In your option it is given lampblack so go with option b lampblack.
Que 42. ....
Answer - The monomeric unit of polymerTeflon is Tetrafluoro ethylene which is C2F4.
Que 43. ....
Answer - Acrylonitrile.
Que 44. ....
Answer - (Basic)
Metal oxides are crystalline solids that contain a metal cation and an oxide anion. They typically react with water to form bases or with acids to form salts. MO + H2O → M(OH)2 (where M = group 2 metal) Thus, these compounds are often called basic oxides.
Que 45. ....
Answer - (Petrochemicals)
Many useful substances are obtained from petroleum and natural gas. These are termed as 'Petrochemicals'.
Que 46. ...
Answer - Graphite.
Que 47. ....
Answer - Polyester
Polyester is a synthetic polymer that can be stretched several times of its original length.
Que 48. ....
Answer - Thermal power station.
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