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Chemistry

Chemistry
Zone refining is used for the purification of

Ag
Ge
Au
Cu

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Chemistry
The high reactivity of fluorine is due to

its high electro negativity
availability of d-orbitals
small size of fluorine atom
strong F - F bond

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Chemistry
The product, 9-nitroanthracene is obtained from anthracene by the action of

Nitric acid and acetic anhydride
Nitric acid in excess
Nitric acid and acetic acid
Nitric acid and ethyl alcohol

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Chemistry
The quality of petrol is expressed in terms of

Gold number
Octane number
Added unlead compounds
Cetane number

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Chemistry
Which one of the following statement is correct ?Ozone is found in the earth's atmosphere mostly between

50 and 100 km
5 and 10 km
10 and 20 km
20 and 50 km

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Chemistry
Photo-oxidation process is initiated by

Oxygen
Heat
Catalyst
Light

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MORE MCQ ON Chemistry

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