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Who invented typewriter?

1. A Pascal
2. B Shockley
3. C Sholes
4. D Waterman

Anatomy is the branch of science which deals with--

1. A Animal behavior
2. B Cells and tissues
3. C Functioning of body organs
4. D Structure of animals and plants

Which one of the following is responsible for the depletion of ozone layer?

1. A chloroflurocarbons
2. B methane
3. C PAN
4. D sulphur oxide

Coal is formed from--

1. A lave
2. B organic matter
3. C rocks
4. D soil

Which of the following is a renewable source of energy?

1. A biomass
2. B coal
3. C kerosene
4. D petroleum

The earth rotates from---

1. A east to west
2. B north to south
3. C south to north
4. D west to east

Mark the wrong combination--

1. A A. G. Bell : Telephone
2. B J. L. Baird : Television
3. C J. Perkins : Penicillin
4. D James Watt : Steam Engine

Which human gland does secret growth hormone?

1. A Liver
2. B Pancreas
3. C Pituitary Gland
4. D Thalamus

Which one of the following is used for bleaching purposes?

1. A bromine
2. B chlorine
3. C fluorine
4. D iodine

Ozone depletion is caused by----

1. A Carbon dioxide
2. B Carbon monoxide
3. C Chloroflurocarbon
4. D Mercuric Oxide

Which of the following compounds are responsible for acid rain?

1. A nitrogen dioxide and carbon monoxide
2. B nitrogen dioxide and silicon dioxide
3. C nitrogen dioxide and sulphur dioxide
4. D silicon dioxide and carbon monoxide

Which food stuff turns blue-black when brought in contact with iodine?

1. A Proteins
2. B Starch
3. C Unsaturated fatty acids
4. D Vitamins