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Chemistry

Chemistry
Bleaching powder is used in drinking water as a/an

Antibiotic
Disinfectant
Coagulant
Antiseptic

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Chemistry
The most abundant metal in the Earth’s crust is

Iron
Copper
Zinc
Aluminium

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Chemistry
Which of the following appeared to be with a significant potential for accumulation through food chains ?

DDT
Lindane
Parathion
Carbary

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Chemistry
"Paramagnetism" is the property of

Unpaired electrons
Completely filled electronics subshells
Paired electrons
Completely vacant electronic subshells

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Chemistry
Warming Ammonium chloride with sodium hydrochloride in a test tube is an example of

Closed system
Isothermal system
Isobaric system
Open system

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Chemistry
The mass of one Avogadro number of helium atom is

4.00 gram
4 x 6.02 x 1023 gram
1.00 gram
8.00 gram

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MORE MCQ ON Chemistry

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