HARD
UPSC CAPF AC Paper - I
IMPORTANT
Earn 100

Statement I: Soaps do not form lather with water containing salts of calcium and magnesium.

Statement II: Calcium and magnesium salts of long chain fatty acids are insoluble in water.

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Important Questions on Chemistry

HARD
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 282
The polymeric fibres used as a substitute for wool in making synthetic blankets, sweaters etc. is:
EASY
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 283
Sodium stearate is a salt and is used_____.
HARD
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 284
Cement, the most important building materials at the present time, is used in the construction of buildings, roads, dams etc. It does not contain:
HARD
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 285
Alcohol obtained in the saponification process is:
EASY
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 286
Which one of the following substances is made from natural raw materials?
HARD
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 287
KMnO4 can be used as:
HARD
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 288
A thick paste of cement, sand and water is called:
HARD
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 289

Statement I: Setting of cement is an exothermic process.

Statement II: Gypsum is added to cement to slow down its setting.