This chapter is currently out of syllabus
1
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus

Match List-I with List-II :

List-I
(Defects)
List-II
(Shown by)
(a) Frenkel defect (i) Non-ionic solids and density of the solid decreases
(b) Schottky defect (ii) Non-ionic solids and density of the solid increases
(c) Vacancy defect (iii) Ionic solids and density of the solid decreases
(d) Interstitial defect (iv) Ionic solids and density of the solid remains constant

Choose the correct answer from the options given below :

A
(a) - (iv), (b) - (iii), (c) - (i), (d) - (ii)
B
(a) - (i), (b) - (ii), (c) - (iii), (d) - (iv)
C
(a) - (i), (b) - (iii), (c) - (ii), (d) - (iv)
D
(a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)
2
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : In a particular point defect, an ionic solid is electrically neutral, even if few of its cations are missing from its unit cells.

Reason (R) : In an ionic solid, Frankel defect arises due to dislocation of cation from its lattice site to interstitial site, maintaining overall electrical neutrality.

In the light of the above statements, choose the most appropriate answer from the options given below :

A
Both (A) and (R) are correct and (R) is the correct explanation of (A)
B
Both (A) and (R) are correct but (R) is not the correct explanation of (A)
C
(A) is correct but (R) is not correct
D
(A) is not correct but (R) is correct
3
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus

Choose the correct statement:

A
Diamond and graphite have two dimensional network.
B
Diamond is covalent and graphite is ionic.
C
Diamond is sp3 hybridized and graphite is sp2 hybridized
D
Both diamond and graphite are used as dry lubricants.
4
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus

Copper crystallises in fcc unit cell with cell edge length of 3.608 $$\times$$ 10$$-$$8 cm. The density of copper is 8.92 g cm$$-$$3. Calculate the atomic mass of copper.

A
63.1 u
B
31.55 u
C
60 u
D
65 u
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