JEE Main 2021 (Online) 17th March Morning Shift | Surface Chemistry Question 48 | Chemistry

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JEE Main 2021 (Online) 17th March Morning Shift

MCQ (Single Correct Answer)

-1

A colloidal system consisting of a gas dispersed in a solid is called a/an :

foam

aerosol

solid sol

gel

JEE Main 2021 (Online) 16th March Evening Shift

MCQ (Single Correct Answer)

-1

The INCORRECT statements below regarding colloidal solutions is :

The flocculating power of Al³⁺ is more than that of Na⁺.

A colloidal solutions shows Brownian motion of colloidal particles.

An ordinary filter paper can stop the flow of colloidal particles.

A colloidal solutions shows colligative properties.

JEE Main 2021 (Online) 26th February Evening Shift

MCQ (Single Correct Answer)

-1

The nature of charge on resulting colloidal particles when FeCl₃ is added to excess of hot water is :

neutral

sometimes positive and sometimes negative

positive

negative

JEE Main 2021 (Online) 25th February Evening Shift

MCQ (Single Correct Answer)

-1

Which one of the following statements is FALSE for hydrophilic sols?

They do not require electrolytes for stability.

The sols cannot be easily coagulated.

These sols are reversible in nature.

Their viscosity is of the order of that of H₂O.

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