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Chemistry

Chemistry
The metal present in vitamin B12 is

Mg
Co
Fe
Mo

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Chemistry
Which one is the most reactive gaseous element

Bromine
Iodine
Flourine
Chlorine

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Chemistry
Which halide is used in making sensitive emulsion on photograhic film?

Sodium chloride
Silver iodide
Silver bromide
Silver chloride

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Chemistry
The atomic number of carbon is 6 and its atomic mass is 12. How many are there protons in the nucleus of carbon ?

18
6
12
Zero

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Chemistry
The water pollution in river is measured by the dissolved amount of

Oxygen
Ozone
Chlorine
Nitrogen

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Chemistry
Antacids are found in drugs that give relief to

Acne
Stomach ache
Eye sight
Headache

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MORE MCQ ON Chemistry

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