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Chemistry

Chemistry
Which of the following is used as non-stick coating for cooking utensils?

Styrofoam
Polystyrene
Teflon
Perspex

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

Greenhouse effect
Fire in coal mines
Trade winds
Dry farming

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Chemistry
One of the following is used to dissolve noble metals. That is

Sulphuric acid
Aqua ragia
Hydrochloric acid
Nitric acid

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Chemistry
Among the fuels given below, the one with highest calorific value is

Wood
Natural gas
Coal
Coke

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Chemistry
The Fungus which is used in the alcohol industry is

Yeast
Mushroom
Rhizopus
Candida Aibicans

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Chemistry
What is the mass percentage of oxygen in carbon dioxide (CO2)

0.658
0.727
0.305
0.509

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