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Chemistry

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

0.158
0.273
0.201
0.323

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Chemistry
Silica gel is a

Moisturizer
Flavouring agent
Drying agent
Delicious food

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Chemistry
The metal extracted from Bauxite is :

Aluminum
Silver
Copper
Manganese

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Chemistry
The National Chemical Laboratory (India) is located in

Pune
Bangaluru
Mumbai
Hyderabad

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Chemistry
The most common cause of pollution of air is

Sulphur dioxide
Carbon monoxide
Smoke
Carbon dioxide

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Chemistry
If the equilibrium constants for the systems H2 + I2 ? 2HI and 2HI ? H2 + I2 are K1 and K2 respectively, the relationship between K1 and K2 is :

K1 = 2K2
K1 = K2/2
K1 = K2
K 1 = 1 /K2

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MORE MCQ ON Chemistry

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