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Chemistry

Chemistry
The chief constituent of vinegar is

Salycylic acid
Acetic acid
Oxalic acid
Formic acid

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Chemistry
Aquaregia is a mixture of the following in the ratio 1 : 3 by volume

Dil. HCl and dil. HNO3
Conc. HNO3 and conc. H2SO4
Conc. HNO3 and conc. HCl
Conc. HCl and conc. HNO3

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Chemistry
The chemical substance present in bones and teeth is

Calcium borate
Calcium phosphate
Calcium sulphate
Calcium chloride

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Chemistry
When a spoon is to be electroplated with nickel the spoon is

Coated with nickel sulphate and dried
Made cathode and a pure nickel red, the anode
Made anode and a pure nickel rod, the cathode
Dipped in a nickel sulphate solution

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Chemistry
Chloroform can be used as

Anaesthetic
Analgesic
Antimalarial
Antibiotic

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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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