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Chemistry

Chemistry
A non-electronic conductor is

Gas Carbon
None of these
Iron
Copper Sulphate

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Chemistry
Which one is a naturally occuring noble gas

Sodium
Potassium
Boron
Argon

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Chemistry
‘Aerosol’ is known as

Microbes, present in air
Suspended solid particles in air
Green house gas present in air
Pollutant gas, present in air

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Chemistry
Which of the following is the maximum number of electrons that can be present in M-shell?

18
32
2
8

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Chemistry
The amount of chlorine available in water after disinfection is called as

Free chlorine
Residual chlorine
Combined available chlorine
Free available chlorine

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Chemistry
Food cans are coated with tin and not with zinc because

Zinc is less reactive than tin
Zinc is more reactive than tin
Zinc has a higher melting point than tin
Zinc is costlier than tin

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