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Chemistry

Chemistry
Which of the following has least negative electron gain enthalpy

S
F
P
Cl

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Chemistry
Which of the following is a man-made source of air pollution ?

Bacterial action in soil and swamp areas
Forest fire
Automobile exhaust
All of these

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Chemistry
Non-stick kitchenwares are coated with

PVC
Graphite
Silicon
Teflon

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Chemistry
In addition to hydrogen, the other abundant element present on Sun’s surface is

Neon
Helium
Oxygen
Argon

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Chemistry
The wire of flash bulb is made of:

Silver
Magnesium
Copper
Barium

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Chemistry
Which of the following is usually not an air-pollutant?

Nitrous oxide
Carbon dioxide
Sulphur dioxide
Hydrocarbons

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