Home
Class 12
CHEMISTRY
(A): Hair washed with soap and hard wate...

(A): Hair washed with soap and hard water looks dull.
(R): Calcium and magnesium salts soaps are 1 insoluble in water. 

A

Both A & R are true, R is the correct explanation of A

B

Both A & R are true, R is not correct explanation of A

C

A is true, R is false

D

A is false, R is true

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • CHEMISTRY IN EVERY DAY LIFE

    AAKASH SERIES|Exercise OBJECTIVE EXERCISE - 2 (CLASSIFICATION)|2 Videos

  • CHEMISTRY IN EVERY DAY LIFE

    AAKASH SERIES|Exercise OBJECTIVE EXERCISE - 2 (ANTACIDS)|7 Videos

  • CHEMISTRY IN EVERY DAY LIFE

    AAKASH SERIES|Exercise OBJECTIVE EXERCISE - 1 (ANTIMICROBIALS)|16 Videos

  • CHEMICAL THERMODYNAMICS

    AAKASH SERIES|Exercise Additional Practice Exercise|54 Videos

  • CHEMISTRY IN EVERYDAY LIFE

    AAKASH SERIES|Exercise PRACTICE SHEET - 2 (PRACTICE SHEET -2 (INTEGER ANSWER TYPE QUESTIONS))|7 Videos

Similar Questions

Explore conceptually related problems

(A) Dye does not absorb evenly on cloth washed with soap using hard water. (R) Insoluble calcium and magnesium soaps precipitate adheres on to the fibre of the cloth as gummy mass.

(A) : Temporary hardness can be removed by boiling hard water (R) : On boiling hard water bicarbonates of calcium and magnesium are converted to insoluble carbonates

Soap is the sodium salt of a long chain fatty acid, Sodium salt stearic acis is soluble in water, whereas calcium and magnesium salts are insoluble, so when soap is added to soft water, it dissolves and forms lather readily. Temporary hardness in water can be easily removed by boiling. Permanent hardness can be removed by the addition of washing soda, Calgon process, ion exchange process. Calgon contains

Soap is the sodium salt of a long chain fatty acid, Sodium salt stearic acis is soluble in water, whereas calcium and magnesium salts are insoluble, so when soap is added to soft water, it dissolves and forms lather readily. Temporary hardness in water can be easily removed by boiling. Permanent hardness can be removed by the addition of washing soda, Calgon process, ion exchange process. The degree of hardness of a sample of water containing 6 mg of magnesium sulphate (other salts are absent) per kilogram of water is

Why do soaps not work in hard water?

The hydroxides and carbonates of sodium and potassium are easily soluble in water while the corresponding salts of magnesium and calcium are sparingly soluble in water. Explain.

(A) Vitamins A, D, E and K are stored in liver and adipose tissues. (R) Vitamins A, D, E and K are insoluble in water.

Temporary hardness of water is due to the presence of of _ _ _ _ _ calcium and magnesium in water.

(A) Generally potassium soaps are soft to the skin than sodium soaps. (R) Potassium salts of soaps are more soluble than sodium salts of soaps.

Grease + soap undersetrarr(water) .......