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Chemistry

Chemistry
What is the atomic number of mercury

63
80
41
32

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Chemistry
The maximum number of isomers for an alkene with molecular formula C4H8 is

3
4
2
5

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Chemistry
Submarines move under water. They have engines that run on

Steam
Batteries
Petrol and oxygen
Diesel

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Chemistry
In electro-refining, the pure metal is deposited on

Cathode
Anode
Electrolyte
Vessel

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Chemistry
Synthetic detergents are made from

Sodium salt of benzene sulphonic acid
Sodium stearate
Sodium palmitate
Sodium salt of benzene carboxylic acid

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Chemistry
Ozone depletion in the atmosphere is mainly caused by

Chlorofluorocarbon
Sulphur dioxide
Hydrogen sulphide
Nitrogen dioxide

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