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Chemistry

Chemistry
The weight of 6.023 × 1022 atoms of carbon is

120 gms
12 gms
0.12 gms
1.2 gms

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Chemistry
The Refrigerant 'FREON' is

Hydrofluosilicic Acid
Calcium Tetra Fluoride
Fluorspar and Felspar
Difluoro Dichloro Methane

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Chemistry
The new strain of bacteria produced by biotechnology in alcohol industry is

Pseudomonas putida
Saccharomyces cerevisiae
Escherichia coli
Bacillus subtilis

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Chemistry
Combustion of a candle is a/an

Endothermic reaction
Physical change
Exothermic reaction
Photochemical reaction

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Chemistry
The fiber least prone to catch fire is

Polyester
Terylene
Cotton
Nylon

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Chemistry
Spirit in contact with body gives cool sensation because it is :

Highly volatile
Liquid
Transparent
A good conductor

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MORE MCQ ON Chemistry

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