General Knowledge Questions Answer GK Quiz

GK General Knowledge - Chemistry Question Answer Quiz

Q. Which one of the following substances is not a mixture?
1) Tin
2) Sea water
3) Soil
4) Air

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Q. Soaps clean surfaces on the principle based on -
1) Viscosity
2) Floatation
3) Elasticity
4) Surface tension

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Q. Which one of the following does not represent the salt, Calcium carbonate?
1) Lime water
2) Limestone
3) Chalk
4) Marble

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Q. A sample of soft soap contains -
1) Caesium
2) Potassium
3) Calcium
4) Magnesium

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Q. Which one of the following statements about water is not true?
1) Hydrogen bonds are present in liquid water
2) Water has a high boiling point
3) Water has a high heat of fusion
4) Water is a non-polar molecule

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Q. Which one of the following compounds does not exhibit a different oxidation number of the same element?
1) Pb3O4
2) Fe3O4
3) Fe2O3
4) Mn3O4

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Q. The elements present in urea are -
1) C, H, O
2) C, N, O
3) C, H, N
4) C, H, N, O

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Q. The numbers of sigma and pi bonds in benzene are -
1) 3, 3
2) 3, 6
3) 12, 3
4) 12, 6

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Q. A mixture of sand and naphthalene can be separated by -
1) sublimation
2) distillation
3) chromatography
4) fractional distillation

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Q. The pH of a solution changes from 3 to 6. The H+ ion concentration will -
1) increase 3 times
2) decrease 3 times
3) decrease 10 times
4) decrease 1000 times

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