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Chemistry

Chemistry
In ice, the number of hydrogen bonds per water molecule is

1
4
2
8

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Chemistry
The method of concentrating the ore which makes use of the difference in density between ore and impurities is called

liquation
magnetic separation
levigation
leaching

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Chemistry
The most abundant rare gas in the atmosphere is

Xe
Ar
He
Ne

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Chemistry
Which of the following substance's smell is similar to Ethanoic acid?

Tomato juice
Lemon
Kerosene
Vinegar

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Chemistry
Higher concentration of nitrogen dioxide in atmosphere air causes

Asphyxiation
Bronchitis
Cancer
Corrosion

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Chemistry
At room temperature, the metal that remains liquid is:

Lead
Platinum
Zinc
Mercury

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