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Chemistry

Chemistry
The value of Avogadro Number is

6.023 × 1023
6.023 × 1024
6.023 × 1022
6.023 × 1025

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Chemistry
Trinitrotoluene is

Used to melt metals
Used to fuse two metals
Used as an abrasive
Used as an explosive

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Chemistry
The buffer action of blood is due to the presence of

HCI and NaCI
CI– and [CO3]2–
[HCO3]– and H2CO3
CI– and [HCO3]–

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Chemistry
Soldering of two metals is possible because of the property of :

Surface tension
Cohesion
Viscosity
Osmosis

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Chemistry
Mixture can be

Homogeneous
Pure substance
Heterogeneous
Both A and B

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Chemistry
Ultraviolet rays can be used in water treatment as

Hydrolyser
Precipitator
Disinfectant
Flocculator

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MORE MCQ ON Chemistry

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