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Chemistry

Chemistry
How many electrons can be accommodated in d-orbital

10
6
3
8

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Chemistry
Nylon threads are made of

Polyester polymer
Polyvinyl polymer
Polysaccharide
Polyamide polymer

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Chemistry
What is the atomic number of Oxygen

8
12
5
22

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Chemistry
The gas that is used in the manufacture of vanaspati ghee is :

Carbon dioxide
Hydrogen
Nitrogen
Oxygen

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Chemistry
Petroleum consists of a mixture of

Carbonates
Carbohydrates
Carbides
Hydrocarbons

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Chemistry
In which of the following states maximum iron ore is found ?

Fe2O3
Fe3O4
FeS2
FeCO3

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