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Chemistry

Chemistry
By which organic compound all the oils are known ?

Ester
Carbohydrate
Hydrocarbon
Protein

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Chemistry
Among the following iron ores, the highest percentage of iron content is found in–

None of these
Limnonite
Haemetite
Magnetite

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Chemistry
Formation of ozone hole is maximum over

India
Antarctica
Europe
Africa

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Chemistry
Most commonly used bleaching agent is

Alcohol
Sodium chloride
Chlorine
Carbon dioxide

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Chemistry
Two elements which can form a large number of compounds are

Carbon and Oxygen
Carbon and Nitrogen
Carbon and Sulphur
Carbon and Hydrogen

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Chemistry
Which one of the following statements is not correct? Vulcanisation of rubber makes it

Chemical resistant
Soft and flexible
Strong and hard
Withstand higher temperatures

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