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Chemistry

Chemistry
In deep-sea diving, divers use a mixture of gases consisting of oxygen and

Helium
Hydrogen
Nitrogen
Argon

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Chemistry
Which of the following phenomenon is considered responsible for Global Warming?

Greenhouse effect
Dry farming
Fire in coal mines
Trade winds

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Chemistry
What is the product formed when sodium bicarbonate is heated strongly?

Sodium Peroxide
Sodium Hydroxide
Sodium Monoxide
Sodium Carbonate

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Chemistry
Which of the following elements is not present in stainless steel?

Iron
Tungsten
Chromium
Nickel

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Chemistry
1 carat of diamond is equal to

100 mg
200 g
100 g
200 mg

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Chemistry
Ferrous sulphate is used in water treatment as a/an

Coagulant aid
Reducing agent
Oxidizing agent
Adsorbent

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