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Chemistry

Chemistry
Biofertilizers convert nitrogen to ________ .

Amino acids
Nitrogenase
Nitrates
Ammonia

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Chemistry
Number of neutrons in an atom of hydrogen is

Zero
Two
One
Three

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Chemistry
The element used in the manufacture of safety matches is

Phosphorous
Silicon
Sulphur
Magnesium

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Chemistry
The natural source of hydro-carbon is

Biomass
Crude oil
Carbohydrates
Coal

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Chemistry
The percentage of carbon in cost iron is :

0.01 to 0.25
0.5 to 1.5
6 to 8
3 to 5

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Chemistry
How many atoms of oxygen are in a glucose molecule

4
3
6
10

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MORE MCQ ON Chemistry

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