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Chemistry

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

Infinity
4J
2J

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Chemistry
Sodium is produced by the electrolysis of

Aqueous brine solution
Its cyanide complex
Molten sodium chloride
Molten sodium carbonate

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Chemistry
The main chemical constituent of the oil of cardamom which is responsible for flavour of this oil is

engenol
limonene
cineole
geraniol

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Chemistry
Which of the following elements is non-radioactive ?

Zirconium
Uranium
Thorium
Plutonium

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Chemistry
Which of the following is used in welding broken pieces of iron rails and machine parts?

Aluminium powder
Aluminium sulphate
None of these
Solder

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Chemistry
Rock salt is a mineral containing

Sodium
Iron
Magnesium
Potassium

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