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Chemistry

Chemistry
How many electrons can be accommodated in d-orbital

6
10
3
8

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Chemistry
Which of the following appeared to be with a significant potential for accumulation through food chains ?

Carbary
DDT
Parathion
Lindane

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Chemistry
Aerated water contains

H2
SO2
NO2
CO2

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Chemistry
Silk fibre chemically is :

Carbohydrate
Cellulose
Protein
Fat

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

Natural Gas
Petroleum
Firewood
Coal

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Chemistry
An acid having basicity one is

Sodium phosphate
Phosphoric acid
Disodium hydrogen phosphate
Sodium dihydrogen phosphate

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