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Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced


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14 Questions MCQ Test Chemistry for JEE | Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced

Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced for JEE 2023 is part of Chemistry for JEE preparation. The Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced questions and answers have been prepared according to the JEE exam syllabus.The Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced MCQs are made for JEE 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced below.
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Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 1

CsBr has bcc structure with edge length 4.3. The shortestinter ionic distance in between Cs+ and Br is : (1995S)

Detailed Solution for Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 1

For bcc structure, atomic radius, 

Since, r = half the distance between two nearest
neighbouring atoms.
∴ Shortest inter ionic distance = 2 × 1.86 = 3.72

Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 2

The coordination number of a metal crystallizing in ahexagonal close-packed structure is (1999 - 2 Marks)

Detailed Solution for Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 2

In a hcp structure atoms are located at the corners and at centres of two hexagons placed parallel to each other ; three more atoms are placed in a parallel plane midway between these two planes. Here each atom is surrounded by 12 others and is said to have
co-ordination number of 12.

Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 3

In a solid ‘AB’ having the NaCl structure, ‘A’ atoms occupythe corners of the cubic unit cell. If all the face-centeredatoms along one of the axes are removed, then the resultantstoichiometry of the solid is     (2001S)

Detailed Solution for Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 3

(d) Effective number of ‘A’ atoms = 

Effective number of ‘B’ atoms = 

∴ Formula of the solid = A3B4.

Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 4

A substance AxBy crystallizes in a face centred cubic (FCC)lattice in which atoms 'A' occupy each corner of the cubeand atoms 'B' occupy the centres of each face of the cube.Identify the correct composition of the substance AxBy   (2002S)

Detailed Solution for Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 4

Effective number of atoms at corners, 

Effective number of atoms at centre,

Thus, the composition will be AB3

Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 5

Rate of physiorption increases with (2003S)

Detailed Solution for Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 5

Rate of physiorsption increases with decrease of temperature

 = amt of gas adsorbed per unit
mass of adsorbent

t = temperature

Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 6

Adsorption of gases on solid surface is generally exothermicbecause (2004S)

Detailed Solution for Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 6

When a gas is adsorbed on the surface, the freedom of movement of its molecules becomes restricted. This causes decrease in the entropy of the gas after adsorbtion, i.e. ΔS becomes negative

Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 7

In which of the following crystals alternate tetrahedral voidsare occupied? (2005S)

Detailed Solution for Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 7

In ZnS structure, sulphide ions occupy all FCC lattice points while Zn2+ ions are present in alternate tetrahedral voids.

Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 8

Lyophilic sols are (2005S)

Detailed Solution for Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 8

Lyophilic sols are self stabilizing because these sols are reversible and are highly hydrated in the solution.

Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 9

Among the following, the surfactant that will form micellesin aqueous solution at the lowest molar concentration atambient condition is : – (2008S)

Detailed Solution for Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 9

We know that surface acting agents (i.e. surfactants) such as soaps and detergents belong to the class of micelles. A miceller system when dissolved in water, dissociates to give ions. The anion consists of two parts. The polar groups such as ion
is water loving (i.e. hydrophilic) in nature. It is called head of the species. The hydrocarbon chain which is quite big in size is water repelling (i.e. hydrophobic) in nature. It is called tail of the species. The hydrocarbon
chain aggregates into the micelle above the critical concentration.
NOTE : It may also be noted that the critical
concentration for micelle formation decreases with increase in the molecular weight of the hydrocarbon chain of surfactant.
Here the two anions that are formed are in case of "B"

The molecular weight of hydrocarbon chain is more in case of "B" so it has lower value of critical concentration for micelle formation in aqueous solution.
Hence the correct answer is option (b).

Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 10

Among the electrolytes Na2SO4, CaCl2, Al2(SO4)3 and NH4Cl, the most effective coagulating agent for Sb2S3 solis (2009S)

Detailed Solution for Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 10

As Sb2S3 is a negative sol, so Al2(SO4)3 will be the most effective coagulant due to higher positive charge on Al (Al3+) – Hardy-Schulze rule.

Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 11

The packing efficiency of the two-dimensional square unit cell shown below is :

Detailed Solution for Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 11

Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 12

A compound MpXq has cubic close packing (ccp) arrangement of X. Its unit cell structure is shown below.
The empirical formula of the compound is      (2012 - I)

Detailed Solution for Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 12

No. of M atoms = 

No. of X atoms = 

So, formula = M2X4 = MX2

Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 13

The arrangement of X ions around A+ ion in solid AX is given in the figure (not drawn to scale). If the radius of X is 250 pm, the radius of A+ is

Detailed Solution for Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 13

The arrangement given shows octahedral void
arrangement-limiting radius ratio for octahedral void is

Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 14

Methylene blue, from its aqueous solution, is adsorbed onactivated charcoal at 25°C. For this process, the correctstatement is (JEE Adv. 2013)

Detailed Solution for Test: Single Correct MCQs: The Solid State & Surface Chemistry | JEE Advanced - Question 14

The adsorption of methylene blue on activated charcoal is an example of physiosorption which is exothermic, multilayer and does not have energy barrier.

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