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Chemistry

Chemistry
Which is the heaviest metal among the following?

Gold
Copper
Silver
Iron

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Chemistry
Galvanization of iron is carried out using

Tin
Chromium
Zinc
Copper

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Chemistry
Bakelite is a co-polymer of Phenol and

Benzaldehyde
Cinnaldehyde
Formaldehyde
Acetaldehyde

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Chemistry
When conc. H2SO4 is added to dry KNO3, brown fumes are evolved. These fumes are due to

SO2
SO3
NO2
N2O

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Chemistry
The method that cannot be used for removing permanent hardness of water is

adding sodium carbonate
distillation
adding caustic soda
boiling

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Chemistry
In chemical terms, what are alums used for purifying water for drinking purposes ?

Double nitrate
Double sulphates
Hydrated chlorides
Nitrates of aluminium

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MORE MCQ ON Chemistry

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