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Chemistry

Chemistry
Quartz is made of

Sodium Silicate
Sodium Sulphate
Calcium Silicate
Calcium Sulphate

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Chemistry
The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is

5x/36
x/6
5x
7.2 x

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Chemistry
Coal is formed from

Crude oil
Compressed and hardened biomass
Coke
Deposit of animal waste

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Chemistry
Which substance is used to retard the setting action of cement?

Na2O + K2O
Al2O3
CaO
CaSO4, 2H2O

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Chemistry
The anode of a dry cell is made up of

Lead
Zinc
Cadmium
Iron

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Chemistry
The common name for the compound having formal NaOH is

Soda ash
Sodium hydroxide
Caustic soda
Caustic potash

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MORE MCQ ON Chemistry

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