Soaps
Trending Questions
Q. Assertion (A): Hard water gives easy lather with soap.
Reason (R): Salts of calcium and magnesium react with soap to form insoluble salts.
Reason (R): Salts of calcium and magnesium react with soap to form insoluble salts.
- (A) and (R) both are correct and (R) is the correct explanation of (A).
- (A) and (R) both are correct but (R) is not the correct explanation of (A).
- (A) is correct but (R) is not correct.
- (A) is not correct but (R) is correct.
Q.
13. Assertion (A): When carbon dioxide gas is passed through lime water, lime water is turned milky.
Reason (R): Calcium carbonate is soluble in water.
Both (A) and (R) are true and (R) is correct explanation for (A).
Both (A) and (R) are true but (It) is not the correct explanation for (A).
(A) is correct but (R) is false.
(A) is false but (R) is true.
Q. Low grade fats and oils are used in the manufacturing of washing soap.
- True
- False
Q. Bleaching powder is prepared by passing _______ gas over dry slaked lime.
- hydrogen
- nitrogen
- oxygen
- chlorine