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Chemistry

Chemistry
The number of hydrogen bonds between guanine and cytosine in DNA is

3
1
2
4

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Chemistry
Muddy water is treated with alum in purification process, itis termed as :

Emulsification
Absorption
Adsorption
Coagulation

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Chemistry
The chemical(s) most commonly used for cloud seeding or ‘artificial rainmaking’ is/are

Sodium Chloride
Dry ice or frozen carbon dioxide
All listed here
Silver Iodide

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Chemistry
The chemical name of baking soda is

Sodium carbonate
Sodium chloride
Sodium bicarbonate
Sodium nitrate

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Chemistry
Sea water can be purified by the process of

Distillation
Filtration
Fractional distillation
Evaporation

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Chemistry
Which one is the lightest element in the periodic table

Hydrogen
Carbon
Oxygen
Helium

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MORE MCQ ON Chemistry

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