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Chemistry

Chemistry
The most commonly used bleaching agent is

chlorine
alcohol
carbon dioxide
sodium chlorine

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Chemistry
The aprotic solvent is

H2O
C6H6
HF
NH3

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Chemistry
Iodine value is used to estimate

Alkali content in oil
Unsaturation in oil
Carboxylic groups in oil
Hydroxyl groups in oil

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Chemistry
When a bond is formed between two atoms, the energy of the system will

Decrease
May increase or decrease
Increase
Remain the same

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Chemistry
Tar roads get damaged if there is

Stagnation of water on road
Heavy traffic
No sloping
No maintenance

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Chemistry
Which of the following compounds is commonly used as an antiseptic in mouthwashes and toothpastes ?

Saltpetre
Hydrogen peroxide
Borax
Sodium chloride

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