1
TS EAMCET 2023 (Online) 14th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following does not form a buffer solution?

A

$\mathrm{NH}_3+\mathrm{HCl}$ (2:1 mole ratio)

B

$\mathrm{CH}_3 \mathrm{CO}_2 \mathrm{H}+\mathrm{NaOH}$ ( $2: 1$ mole ratio)

C

$\mathrm{NaOH}+\mathrm{CH}_3 \mathrm{COOH}$ (1:1 mole ratio)

D

$\mathrm{NH}_4 \mathrm{Cl}+\mathrm{NH}_3$ (1:1 mole ratio)

2
TS EAMCET 2023 (Online) 14th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The hydrides of which group elements of the periodic table form electron precise hydrides?

A

Group 12

B

Group 13

C

Group 14

D

Group 16

3
TS EAMCET 2023 (Online) 14th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The alkali metal with lowest $E^{\circ}{ }_{M^{+} / M}(\mathrm{~V})$ is $X$ and the alkali metal with highest $E^{\circ}{ }_{M^{+} / M}(\mathrm{~V})$ is $Y$. Then $X$ and $Y$ are respectively

A

$\mathrm{Li}, \mathrm{Na}$

B

$\mathrm{Li}, \mathrm{Cs}$

C

$\mathrm{Na}, \mathrm{Li}$

D

$\mathrm{Cs}, \mathrm{Li}$

4
TS EAMCET 2023 (Online) 14th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Assertion (A) Be and Mg do not impart any colour to the flame.

Reason (R) The electrons in them are strongly bound to get excited by flame.

A

(A) and (R) are true (R) is the correct explanation of (A).

B

(A) and (R) are true, but (R) is not the correct explanation of (A).

C

(A) is correct but (R) is incorrect.

D

(A) is incorrect but (R) is correct.

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