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Chemistry

Chemistry
How many neutrons does iron have

8
13
30
26

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Chemistry
The percentage of nitrogen present in ammonium sulphate is :

0.305
0.27
0.25
0.18

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Chemistry
During fermentation of sugar, the compound which is always formed is :

Acetic Acid
Methyl Alcohol
Ethyl Alcohol
Ethylene

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Chemistry
The weight of 6.023 × 1022 atoms of carbon is

12 gms
120 gms
0.12 gms
1.2 gms

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Chemistry
What particles move around the nucleus of an atom and are negatively charged?

Neutrons
Protons
Positrons
Electrons

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Chemistry
The mass number of an atom is equal to

the number of neutrons
the number of protons and electrons
the number of protons
the number of nucleons

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MORE MCQ ON Chemistry

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