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1
KCET 2022
MCQ (Single Correct Answer)
+1
-0

Which of the following is not true about the amorphous solids?

A
They may become crystalline on keeping for long time.
B
Amorphous solids can be moulded by heating.
C
They are anisotropic in nature.
D
On heating they may become crystalline at certain temperature.
2
KCET 2022
MCQ (Single Correct Answer)
+1
-0

Alkali halides do not show dislocation defect because

A
anions cannot be accommodated in vacant spaces
B
cations and anions have almost equal size
C
there is large difference in size of cations and anions
D
cations and anions have low coordination number
3
KCET 2021
MCQ (Single Correct Answer)
+1
-0

In chrysoberyl, a compound containing beryllium, aluminium and oxygen, oxide ions form cubic close packed structure. Aluminium ions occupy $$\frac{1}{4}$$th of octahedral voids. The formula of the compound is

A
$$\mathrm{BeAlO}_4$$
B
$$\mathrm{BeAl}_2 \mathrm{O}_4$$
C
$$\mathrm{Be}_2 \mathrm{AlO}_2$$
D
$$\mathrm{BeAlO}_2$$
4
KCET 2021
MCQ (Single Correct Answer)
+1
-0

The correct statement regarding defects in solid is

A
Frenkel defect is a vacancy defect
B
Schottky defect is a dislocation defect
C
Trapping of an electron in the lattice leads to the formation of F-centre
D
Schottky defect has no effect on density
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Physics
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Organic Chemistry
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Calculus
Functions Limits, Continuity and Differentiability Differentiation Application of Derivatives Indefinite Integration Definite Integration Area Under The Curves Differential Equations
Coordinate Geometry
Straight Lines and Pair of Straight Lines Parabola Ellipse Hyperbola
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