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

Which of the following lanthanides are used in TV screens?

A
Eu
B
Ce
C
Tb
D
Dy
2
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

Which type of isomerism is exhibited by $$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2\right]^{+}$$?

A
Geometrical isomerism
B
Optical isomerism
C
lonisation isomerism
D
Linkage isomerism
3
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

Which of the following isotopes is used to treat cancer?

A
$$\mathrm{Sr}^{90}$$
B
$$\mathrm{Ca}^{20}$$
C
$$\mathrm{Co}^{60}$$
D
$$\mathrm{Fr}$$
4
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

What is the degree of dissociation of $$0.05 \mathrm{~M~NH}_3$$ if its $$\mathrm{pK}{ }_a$$ is 4.75 and $$\mathrm{pH}$$ is 11 ?

A
2%
B
0.2%
C
0.5%
D
5%
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