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Chemistry

Chemistry
The value of Avogadro Number is

6.023 × 1024
6.023 × 1022
6.023 × 1023
6.023 × 1025

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Chemistry
The example of oligosaccharide is

Glucose
Cellulose
Ribose
Sucrose

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Chemistry
What is the covalency of nitrogen in ammonia molecule

2
4
5
3

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Chemistry
Cement is made hard with

Dehydration
Dissociation of water
Hydration and dissociation of water
Polymerisation

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Chemistry
Sour milk contains

Tartaric acid
Acetic acid
Lactic acid
Citric acid

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Chemistry
The number of waves in n x 10th Bohr's orbit are

n
n-2
n3
n2

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