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Chemistry

Chemistry
Which of the following has least negative electron gain enthalpy

P
Cl
S
F

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Chemistry
Which one is the most reactive gaseous element

Flourine
Iodine
Bromine
Chlorine

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Chemistry
Conversion of chemical energy into electrical energy occurs in

Electric heaters
Atomic bombs
A battery
Dynamo

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Chemistry
Which one is a sublime substance?

Iodine
Table salt
Sugar
Potassium Iodide

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Chemistry
Ultraviolet rays can be used in water treatment as

Precipitator
Disinfectant
Hydrolyser
Flocculator

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Chemistry
What is the maximum Water Vapour content in the atmosphere?

5 to 6 per cent
4 to 5 per cent
2 to 3 per cent
3 to 4 per cent

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