1
TS EAMCET 2022 (Online) 19th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

The correct statements among the following are

(A) $\mathrm{BeH}_2$ and $\mathrm{MgH}_2$ are polymeric in nature.

(B) LiH is unreactive to oxygen, at moderate temperatures.

(C) $\mathrm{BeH}_2$ and $\mathrm{MgH}_2$ possesses significant covalent character.

(D) The stability of alkali hydrides follows the order $\mathrm{LiH}<\mathrm{NaH}< \mathrm{KH}<\mathrm{RbH}<\mathrm{CsH}$.

A

A, B, C, D

B

A, C only

C

A, C, D only

D

A, B, C only

2
TS EAMCET 2022 (Online) 19th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

The correct order of melting points of the following salts is

$$ \begin{array}{lll} \text { LiCl } & \text { LiF } & \text { Lil } \\ \text { I } & \text { II } & \text { III } \end{array} $$

A

I $>$ II $>$ III

B

II $>$ I $>$ III

C

III $>$ II $>$ I

D

II $>$ III $>$ I

3
TS EAMCET 2022 (Online) 19th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

$\mathrm{Al}+$ aq. NaOH (excess) $\longrightarrow P+Q \cdot P$ and $Q$ are

A

$\mathrm{Al}(\mathrm{OH})_3: \mathrm{H}_2 \mathrm{O}$

B

$\mathrm{Al}(\mathrm{OH})_3: \mathrm{Na}_2 \mathrm{O}_2$

C

$\mathrm{Na}^{+}\left[\mathrm{Al}(\mathrm{OH})_4\right]: \mathrm{H}_2$

D

$\mathrm{Al}(\mathrm{OH})_3: \mathrm{Na}_2 \mathrm{O}$

4
TS EAMCET 2022 (Online) 19th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

Among the following elements, $X$ exhibits maximum catenation and $Y$ is the least abundant on earth. $X$ and $Y$ elements are

A

$\mathrm{C} . \mathrm{Ge}$

B

$\mathrm{Si}, \mathrm{Ge}$

C

$\mathrm{C} \cdot \mathrm{Pb}$

D

$\mathrm{Ge}, \mathrm{C}$

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