1
TG EAPCET 2025 (Online) 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following is an incorrect statement about the compounds of group 13 elements?

A

All the trihalides exist except $\mathrm{TII}_3$.

B

Trihalides on hydrolysis form tetrahedral species.

C

Diborane is an example of electron precise hydride.

D

Hydrolysis of diborane gives boric acid.

2
TG EAPCET 2025 (Online) 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The incorrect statement about the oxidation states of group 14 elements is

A

In addition to $+4,+2$ carbon also shows negative oxidation states.

B

Tin in +2 state acts as a reducing agent.

C

Lead in +2 state acts as good reducing agent.

D

Lead in +4 state acts as a good oxidising agent.

3
TG EAPCET 2025 (Online) 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In drinking water, if the maximum prescribed concentration of copper is $x \mathrm{mgdm}^{-3}$, the maximum prescribed concentration of zinc will be

A

$\frac{15}{x}$

B

$\frac{x}{15}$

C

$\frac{6}{10} x$

D

$\frac{5}{6} x$

4
TG EAPCET 2025 (Online) 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The empirical formula of the compound ' $D$ ' formed in the given reaction sequence is

$$ \mathrm{C}_2 \mathrm{H}_4 \xrightarrow{\mathrm{Br}_2 / \mathrm{CCl}_4} A \xrightarrow[\text { (ii) } \mathrm{NaNH}_2]{\text { (i) } \mathrm{Alc} \cdot \mathrm{KOH}} B \xrightarrow[\text { polymerisation }]{\text { Cyclic }} C \xrightarrow[\text { DryAlCla }{ }_3 \text {, dark.cold }]{\mathrm{Cl}_2 \text { (excess) }} $$

A

CHCl

B

CCl

C

$\mathrm{CH}_2 \mathrm{Cl}$

D

$\mathrm{CHCl}_2$

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