PVC is obtained by the polymerization of
1 Propene
2 Vinyl chloride
3 Styrene
4 Acetylene
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The chemical used as a ‘fixer’ in photography is 1 Borax 2 Sodium thiosulphate 3 Sodium sulphate 4 Ammonium persulphate
The property of a substance to absorb moisture from the air on exposure is called 1 Osmosis 2 Dessication 3 Efflorescence 4 Deliquescence
Amalgams are 1 Alloys which contain carbon 2 Alloys which have great resistance to abrasion 3 Alloys which contain mercury as one of the contents 4 None of these
When an iron nail gets rusted, iron oxide is formed 1 Without any change in the weight of the nail 2 With increase in the weight of the nail 3 With decrease in the weight of the nail 4 None of these
The human skull rests on which bone? a)Manubrium b)Atlas c)Mandible d)Sternum
Which comet collided with jupiter?
How does common salt help in separating soap from the solution after saponification? 1 By decreasing solubility of soap 2 By increasing solubility of soap 3 By decreasing density of soap 4 None of these
Which of the following is used as a filler in rubber tyres? 1 Graphite 2 Coal 3 Coke 4 Corbon black
Describe the evolution of science and its impact on society
0 Answers Mahatma Gandhi University,
Atoms of an element differ from those of all other elements in 1 Atomic number and electronic configuration 2 Atomic number and number of valence electrons 3 Number of neutrons and electronic configuration 4 None of these
tea will coll most easily in a:
a private address 172.116.0.0 will borrow ? bits from the HOST to give one 120 subnets - range = ?