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Chemistry

Chemistry
DDT and BHC may act as

Carcinogens
Allergens
None of these
Asthematic agents

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Chemistry
Litmus is obtained from

Lichen
A bacterium
A fungus
An alga

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Chemistry
The chemical used in developing photographic films is

Sodium sulphate
Hydroquinone
Silver bromide
Hypo

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Chemistry
The mass of P4O10 that will be obtained from the reaction of 1.33 gram of P4 and 5.07 of oxygen is

2.05 gram
5.05 gram
4.05 gram
3.05 gram

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Chemistry
Which of the following metals is used in Space Crafts to withstand high temperatures ?

Ti
Fe
Pb
Ni

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Chemistry
Which of the following is not a commercial source of energy?

Coal
Firewood
Petroleum
Natural Gas

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