Q. Which of the following is a polymer?
1) Vinyl Chloride
2) Urea
3) Starch
4) Styrence
Q. Glass is mostly produced by heating ___ to about 1400 degree centigrade.
1) Limestone and Soda ash
2) Soda ash and Silica
3) Silica and Limestone
4) Limestone, Silica and Soda ash
Q. The tip of the match-stick contains
1) phosphorus pentoxide
2) white phosphorus
3) red phosphorus
4) Phosphorus trichloride
Q. Biogas mainly contains
1) Methane
2) Ethane
3) Hydrogen
4) CO
Q. Why does diamond shine at night?
1) Diamonds are radioactive so there are radiations
2) On account of high refractive index, the rays of light get internally reflected
3) Diamonds shine because they have some amount of radium in the
4) Diamond shines because it has tetrahedral molecular structure
Q. A light sensitive compound used in photography is
1) Silver chloride
2) Silver sulphide
3) Silver bromide
4) Silver oxide
Q. Which of the following types of clothes is manufactured by using petroleum products?
1) Rayon Silk
2) Terelyne
3) Nylon
4) Cotton
Q. Polythene is industrially prepared by the polymerization of -
1) Methane
2) Styrene
3) Acetylene
4) Ethylene
Q. Hydrogen is used instead of Helium to fill balloons for meteorology because
1) of its low density
2) It is not very reactive under normal conditions
3) It is almost insoluble in water
4) It can be prepared easily
Q. The most abundant element in the earth's crust is
1) Silicon
2) Aluminium
3) Nitrogen
4) Oxygen
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