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Chemistry

Chemistry
Two moles of an ideal gas expand freely into vacuum. The work done by the gas is

2J
Infinity
4J

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Chemistry
The name of unreactive gas is

Oxygen
Hydrogen
Nitrogen
Carbon dioxide

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Chemistry
In the periodic table of elements, on moving from left to right across a period, the atomic radius

Remains unchanged
Increases
Decreases
Does not follow a definite pattern

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Chemistry
When ice cubes are made, the entropy of water

May either increase or decrease depending on the process used
Does not change
Increases
Decreases

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Chemistry
Physico-chemical characteristics of water in water sources undergo changes due to

Evapotranspiration
Aquatic macrophytes
Auatic fungi
Effluents

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Chemistry
Molality of pure water is

1.8
18
5.55
55.5

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MORE MCQ ON Chemistry

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