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Chemistry

Chemistry
The ore which is found in abundance in India is

fluorspar
bauxite
monazite
magnetite

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Chemistry
The major component in the LPG is

Propane
Butane
Methane
Ethane

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Chemistry
Which one element from below list is liquid at room temperature

Argon
Bromine
Lead
Zinc

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Chemistry
The metal ion present in Vitamin B12 is

Cobalt
Nickel
Zinc
Iron

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Chemistry
Ethylene is a ________ molecule.

Covalent
Polar
Ionic
Nonpolar

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Chemistry
Number of6.023 × 1020 atoms present in one mole of a gas at STP is

6.023 × 1023
'6.023 × 10–20
'6.023 × 10–23
6.023 × 1020

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