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Chemistry

Chemistry
What is the atomic number of mercury

32
63
41
80

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Chemistry
If water smells bad, then that odour can be removed by adding

Deactivated nitrogen
Bleach
Alum
Activated carbon

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Chemistry
Air is said to be saturated when :

Its pressure is minimum
It blows over the barren land
It contains maximum content of water vapour
Its thickness is maximum

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Chemistry
The cathode of a lead storage battery is made up of

Manganese dioxide
Lead
Lead oxide
Zinc

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Chemistry
Which of the following is the petroleum wax ?

Jojoba wax
Paraffin wax
Bees wax
Carnauba wax

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Chemistry
How many neutrons are there in 92U238 atom ?

146
238
92
330

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