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Chemistry

Chemistry
The fiber least prone to catch fire is

Cotton
Terylene
Polyester
Nylon

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Chemistry
Which of the following is used as a lubricant in heavy machines?

Bauxite
Graphite
Phosphorus
Sulphur

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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 :

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

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Chemistry
The number of waves made by an electron moving in an orbit having maximum magnetic quantum number is +3

2
zero
4
5

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Chemistry
Which one of the following elements is used in the manufacture of safety matches?

Silicon
Graphite
Phosphorus
Sodium

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Chemistry
Which metal does not undergo corrosion due to the formation of oxide layer?

Copper
Zinc
Aluminium
Iron

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MORE MCQ ON Chemistry

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