JEE Advanced 2015 Paper 1 Offline | Solid State & Surface Chemistry Question 12 | Chemistry

JEE Advanced 2015 Paper 1 Offline

MCQ (More than One Correct Answer)

-2

If the unit cell of a mineral has cubic close packed (ccp) array of oxygen atoms with m fraction of octahedral holes occupied by aluminium ions and n fraction of tetrahedral holes occupied by magnesium ions, m and n, respectively, are

1/2, 1/8

1, 1/4

1/2, 1/2

1/4, 1/8

IIT-JEE 2012 Paper 2 Offline

MCQ (More than One Correct Answer)

-2

The given graphs/data I, II, III and IV represent general trends observed for different physisorption and chemisorption processes under mild conditions of temperature and pressure. Which of the following choice(s) about I, II, III and IV is(are) correct?

IIT-JEE 2012 Paper 2 Offline Chemistry - Solid State & Surface Chemistry Question 12 English 1

IIT-JEE 2012 Paper 2 Offline Chemistry - Solid State & Surface Chemistry Question 12 English 2

IIT-JEE 2012 Paper 2 Offline Chemistry - Solid State & Surface Chemistry Question 12 English 3

IIT-JEE 2012 Paper 2 Offline Chemistry - Solid State & Surface Chemistry Question 12 English 4

I is physisorption and II is chemisorption.

I is physisorption and III is chemisorption.

IV is chemisorption and II is chemisorption.

IV is chemisorption and III is chemisorption.

IIT-JEE 2012 Paper 1 Offline

MCQ (More than One Correct Answer)

-0.5

Choose the correct reason for the stability of the Iyophobic colloidal particles

Preferential adsorption of ions on their surface from the solution

Preferential adsorption of solvent on their surface from the solution

Attraction between different particles having opposite charges on their surface

Potential difference between the fixed layer and the diffused layer of opposite charges around the colloidal particles.

IIT-JEE 2011 Paper 1 Offline

MCQ (More than One Correct Answer)

-0.5

The correct statement(s) pertaining to the adsorption of a gas on a solid surface is (are)

Adsorption is always exothermic

Physisorption may transform into chemisorption at high temperature

Physisorption increases with increasing temperature but chemisorption decreases with increasing temperature

Chemisorption is more exothermic than physisorption, however it is very slow due to higher energy of activation

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