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Chemistry

Chemistry
Depletion of ozone layer causes

Skin cancer
Breast cancer
Lung cancer
Blood cancer

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Chemistry
The percentage of Nitrogen in Air is

85.02
78.03
0.94
0.03

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Chemistry
The maximum number of covalent formed by nitrogen is

2
3
1
4

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Chemistry
The addition of gypsum to portland cement helps in :

Reduction in the cost of cement
Preventing rapid setting of cement
Rapid setting of cement
Increasing the strength of cement

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Chemistry
Periodic table contains how many groups

18
17
19
16

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Chemistry
Antacids are found in drugs that give relief to

Headache
Eye sight
Acne
Stomach ache

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MORE MCQ ON Chemistry

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