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Chemistry

Chemistry
The element with highest first ionisation energy is

Helium
Lithium
Hydrogen
Sodium

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Chemistry
Gobar gas mainly contains

Methane
Hydrogen sulphide
Carbon dioxide
Carbon monoxide

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Chemistry
German silver, an alloy, does not contain the metal

Copper
Nickel
Zinc
Silver

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Chemistry
Which of the following contains high content of lead?

Cooking gas
High octane fuel
Coal
Low octane fuel

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Chemistry
The orientation of an atomic orbital is governed by

Azimuthal quantum number
Spin quantum number
Principal quantum number
Magnetic quantum number

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Chemistry
Glycol is used to manufacture which of the following ?

Rubber
Artificial silk
Terylene
Nylon

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