HARD
JEE Main
IMPORTANT
Earn 100
An element crystallises in a face–centred cubic (fcc) unit cell with cell edge a. The distance between the centres of two nearest octahedral voids in the crystal lattice is:
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Important Questions on Solid State
MEDIUM
JEE Main
IMPORTANT
A diatomic molecule has a body-centred cubic structure with a cell edge of The density of the molecule is The number of molecules present in of is :
(Avogadro constant )
MEDIUM
JEE Main
IMPORTANT
Sodium metal crystallizes in a body centred cubic lattice with a unit cell edge of . The radius of sodium atom is approximately:
MEDIUM
JEE Main
IMPORTANT
The empirical formula for a compound with a cubic close packed arrangement of anions and with cations occupying all the octahedral sites in The value of is (Integer answer)
HARD
JEE Main
IMPORTANT
An element with molar mass forms a cubic unit cell with edge length If its density is , the radius of the element is approximately (to the nearest integer)
EASY
JEE Main
IMPORTANT
A metal crystallizes in a face centred cubic structure. If the edge length of its unit cell is , the closest approach between two atoms in the metallic crystal will be
MEDIUM
JEE Main
IMPORTANT
Select the correct statements.
(A) Crystalline solids have long range order.
(B) Crystalline solids are isotropic.
(C) Amorphous solid are sometimes called pseudo solids.
(D) Amorphous solids soften over a range of
temperatures.
(E) Amorphous solids have a definite heat of fusion. Choose the most appropriate answer from the options given below.
EASY
JEE Main
IMPORTANT
The parameters of the unit cell of a substance are The crystal system of the substance is :
MEDIUM
JEE Main
IMPORTANT
Match List - I with List - II:
| List-I (Property) | List-II (Example) | ||
| (a) | Diamagnetism | (i) | |
| (b) | Ferrimagnetism | (ii) | |
| (c) | Paramagnetism | (iii) | |
| (d) | Antiferromagnetism | (iv) | |
Choose the most appropriate answer from the options given below:
