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Chemistry

Chemistry
How many neutrons does iron have

30
8
26
13

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Chemistry
Fertiliser having high nitrogen content is :

Ammonium nitrate
Urea
Calcium citrate
Ammonium sulphate

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Chemistry
Which one of the following elements is used in the manufacture of fertilizers ?

Aluminium
Potassium
Lead
Fluorine

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Chemistry
Glycol is added to aviation gasoline because it

Increases efficiency of petrol
Prevents freezing of petrol
Reduces consumption of petrol
Reduces evaporation of petrol

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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
3 to 4 per cent
2 to 3 per cent

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Chemistry
An important green-house gas other than methane being produced from the agricultural fields is

Nitrous oxide
Sulphur dioxide
Ammonia
Arsine

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MORE MCQ ON Chemistry

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