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Chemistry

Chemistry
Which of the following is not present in German-silver?

Silver
Nickel
Zinc
Copper

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Chemistry
Which is the heaviest metal among the following?

Gold
Copper
Silver
Iron

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Chemistry
Highest percentage of carbon is found in which form of coal?

Lignite
Peat
Bituminous
Anthracite

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Chemistry
The degree of dissociation of an electrolyte depends on

Dilution
Method of dissolution
Atmospheric pressure
Impurities

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Chemistry
The orientation of an atomic orbital is governed by

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

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Chemistry
Which one of the following is used to restore the colour of old oilpaintings ?

Hydrogen peroxide
Barium peroxide
Ozone
Sodium peroxide

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