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Chemistry

Chemistry
The most abundant element in the earth’s atmosphere is

Nitrogen
Argon
Oxygen
Krypton

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Chemistry
The electronic configuration of an atom having atomic number ‘20’ is

2, 6, 8, 4
2, 8, 8, 2
2, 10, 8
2, 8, 10

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Chemistry
Persons working in cement plants and lime stone quarries are prone to disease like

Asthma
Silicosis
Pneumoconiosis
Cancer

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Chemistry
For extinguishing fire, we use

Marsh gas
Carbon Monoxide
Carbon Dioxide
Hydrogen

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Chemistry
If we burn graphite,

It will not burn
It will change into diamond
Residue will be left
No residue will be left

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Chemistry
What are the major pollutants of cigarette smoke?

Dioxin and benzene
Carbon monoxide and benzene
Carbon monoxide and dioxin
Carbon monoxide and nicotine

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MORE MCQ ON Chemistry

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