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Chemistry

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

4J
Infinity
2J

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Chemistry
The metal present in vitamin B12 is

Mo
Co
Fe
Mg

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Chemistry
The gas used for artificial ripening of green fruit is

acetylene
ethane
ethylene
carbon dioxide

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Chemistry
Which of the following is not soluble in water ?

Lead Sulphate
Sodium sulphate
Potassium sulphate
Zinc sulphate

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Chemistry
Non-stick kitchenwares are coated with

Silicon
Graphite
PVC
Teflon

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Chemistry
Conversion of chemical energy into electrical energy occurs in

Dynamo
Electric heaters
Atomic bombs
A battery

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