1
AP EAPCET 2025 - 26th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following methods is useful for producing semiconductor grade metals of high purity?

A

Liquation

B

Vapour phase refining

C

Electrolytic refining

D

Zone refining

2
AP EAPCET 2025 - 26th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Observe the following

$\mathrm{P}_4+\mathrm{SOCl}_2 \rightarrow$ Products

$\mathrm{P}_4+\mathrm{SO}_2 \mathrm{Cl}_2 \rightarrow$ Products

In both the reactions, a common product ' $x$ ' is obtained. The number of lone pair of electrons on the central atom of $x$ is

A

1

B

2

C

3

D

0

3
AP EAPCET 2025 - 26th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The IUPAC name of the complex shown below is $\mathrm{K}_3\left[\mathrm{Co}(\mathrm{ox})_3\right]$

A

tripotassium trioxalatocobaltate (III)

B

potassium trioxalatecobaltate (III)

C

potassium trioxalatecobalt (III)

D

potassium trioxalatocobaltate (III)

4
AP EAPCET 2025 - 26th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the ion (hydrated in solution) which is not correctly matched with its spin only magnetic moment (in BM) given in brackets

A

$\mathrm{Cr}^{3+}(4.90)$

B

$\mathrm{Cu}^{2+}(1.73)$

C

$\mathrm{Co}^{3+}(4.90)$

D

$\mathrm{Fe}^{2+}(4.90)$