1
KCET 2021
MCQ (Single Correct Answer)
+1
-0

A metal crystallises in bcc lattice with unit cell edge length of $$300 \mathrm{~pm}$$ and density $$615 \mathrm{~g~cm}^{-3}$$. The molar mass of the metal is

A
$$50 \mathrm{~g~mol}^{-1}$$
B
$$60 \mathrm{~g~mol}^{-1}$$
C
$$40 \mathrm{~g~mol}^{-1}$$
D
$$70 \mathrm{~g~mol}^{-1}$$
2
KCET 2020
MCQ (Single Correct Answer)
+1
-0

A metal crystallises in face centred cubic structure with metallic radius $$\sqrt{2} \mathop A\limits^o$$. The volume of the unit cell (in $$\mathrm{m}^3$$ ) is

A
$$4 \times 10^{-10}$$
B
$$6.4 \times 10^{-29}$$
C
$$4 \times 10^{-9}$$
D
$$6.4 \times 10^{-30}$$
3
KCET 2020
MCQ (Single Correct Answer)
+1
-0

Silicon doped with gallium forms

A
$$n$$-type semiconductor
B
both $$n$$ and $$p$$-type semiconductor
C
an intrinsic semiconductor
D
p-type semiconductor
4
KCET 2019
MCQ (Single Correct Answer)
+1
-0

Which of the following is a network crystalline solid?

A
I$$_2$$
B
AIN
C
NaCl
D
Ice
KCET Subjects
EXAM MAP