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(A) : Colloid is a heterogenous system ...

(A) : Colloid is a heterogenous system
(R): Colloidal particles have an enormous surface area per gram as a result of their small size 

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
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Knowledge Check

  • In colloidal state particle size ranges from

    A
    `1-10Å`
    B
    `20-50Å`
    C
    `10-1000Å`
    D
    `1-280Å`

  • In colloidal state particle size ranges from

    A
    `1 - 10 Å`
    B
    `20 - 50 Å`
    C
    `10 - 1000 Å`
    D
    `1 – 280 Å`

  • (A)Colloidal solutions are stable but colloidal particles do not settle down (R ) Brownian movement counters the force of gravity actively on colloidal particles

    A
    Both (A) and (R ) are true and (R ) is the correct explanation of (A)
    B
    Both (A) and (R ) are true and (R ) is not the correct explanation of (A)
    C
    (A) is true but (R ) is false
    D
    Both (A) and (R ) are false

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    (A) Colloidal particles show Brownian Movement (R ) Brownian movement arises because of the impact of the molecules of the dispersion medium with the colloidal particles.

    (A): Substances whose solutions can pass through filter paper but not through animal membrane are called colloids. (R): The size of colloidal particles are smaller than the particles of true solution.

    (A) : Paper pins are made to have pointed end. (R ) : Because pointed pins have very small area due to which even for small applied force it exert large pressure on the surface.

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