Solid State MCQ - 1 (Advanced) - JEE MCQ

Which of the following statements are correct :

Passage

In two dimension, there are square close packing & Hexagonal close packing. In three dimension, however threre are HCP, BCC and CCP arrangement. Unoccupied space in packing is known as void which may be octahedral, tetrahedral or cubic void and formation of void depends on atomic or ionic arrangment in crystal.

Q.

Empty space left in HCP in three dimension is

In two dimension, there are square close packing & Hexagonal close packing. In three dimension, however threre are HCP, BCC and CCP arrangement. Unoccupied space in packing is known as void which may be octahedral, tetrahedral or cubic void and formation of void depends on atomic or ionic arrangment in crystal.

Q.

In ccp, ratio of no. of atoms to no. of tetrahedral void is -

In two dimension, there are square close packing & Hexagonal close packing. In three dimension, however threre are HCP, BCC and CCP arrangement. Unoccupied space in packing is known as void which may be octahedral, tetrahedral or cubic void and formation of void depends on atomic or ionic arrangment in crystal.

Q.

Size order of octahedral, tetrahedral & cubic void is -

In two dimension, there are square close packing & Hexagonal close packing. In three dimension, however threre are HCP, BCC and CCP arrangement. Unoccupied space in packing is known as void which may be octahedral, tetrahedral or cubic void and formation of void depends on atomic or ionic arrangment in crystal.

Q.

In certain metallic oxide, metal M occupy HCP lattice & O^_2 occupy 2/3rd of octahedral void, formula of crystal is -

Statement - I. Due to Frenkel defect the density of solid decrease.

Statement - II. In Frenkel defect cation or anion is present at interstitial site leaving lattice sites vacant.

Statement - I. By increasing the temperature C.N. of CsCl changes from 8 : 8 to 6 : 6.

Statement - II. Temperature also influences the C.N. of solid.

Statement - I. Solid having more F-centers have intense color.

Statement - II. Excess of Na⁺ in NaCl solid having F-centers make it appears to pink.

Statement - I. Close packing of atoms in cubic structure is in order of : fcc > bcc > sc

Statement - II. Packing density = 

Statement - I. Pure NaCl is diamagnetic in nature.

Statement - II. In NaCl, Na⁺ occupy octahedral voids.

State whether the following statements are True or False :

Coluor of LiCl due to metal excess defect is pink.

State whether the following statements are True or False :

The imperfection in crystal increases with increases in temperature.

State whether the following statements are True or False :

FCC structure possesses the most close packing of atoms in it.

State whether the following statements are True or False :

Increase in pressure in ionic solids may decrease co-ordination No.

State whether the following statements are True or False :

The amorphous solids are isotropic.

Match the type of packing given in Column-I with the items given in Column-II.

A cubic solid is made up of two elements A and B. Atoms B are at the corners of the cube and A at the body centre. What is the formula of compound.

A compound alloy of gold and copper crystallizes in a cubic lattice in which gold occupy that lattice point at corners of the cube and copper atom occupy the centres of each of the cube faces. What is the formula of this compound.

A cubic solid is made by atoms A forming close pack arrangement, B occupying one. Fourth of tetrahedral void and C occupying half of the octahedral voids. What is the formula of compound.

What is the percent by mass of titanium in rutile, a mineral that contain Titanium and oxygen, if structure can be described as a closet packed array of oxide ions, with titanium in one half of the octahedral holes. What is the oxidation number of titanium ?

Spinel is a important class of oxides consisting of two types of metal ions with the oxide ions arranged in CCP pattern. The normal spinel has one-eight of the tetrahedral holes occupied by one type of metal ion and one half of the octahedral hole occupied by another type of metal ion. Such a spinel is formed by Zn²⁺, Al³⁺ and O^2-, with Zn²⁺ in the tetrahedral holes. Give the formulae of spinel.

Edge length, density and number of atoms per unit cell

 Iron occurs as bcc as well as fcc unit cell. If the effective radius of an atom of iron is 124 pm. Compute the density of iron in both these structures.