1
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Assertion (A) : In group 15 elements nitrogen does not form pentahalides.

Reason (R) : Nitrogen can exhibit +5 oxidation state.

The correct option among the following is

A
(A) and (R) are true and (R) is the correct explanation of (A).
B
(A) and (R) are true but (R) is not correct explanation of (A).
C
(A) is true but (R) is false.
D
(A) is false but (R) is true.
2
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following reaction represents Deacon's method?

A
$2 \mathrm{H}_2 \mathrm{O}+2 \mathrm{Cl}_2 \xrightarrow{\text { Sunlight }} 4 \mathrm{HCl}+\mathrm{O}_2$
B
$4 \mathrm{HCl}+\mathrm{O}_2 \xrightarrow[723 \mathrm{~K}]{\mathrm{CaCl}_2} 2 \mathrm{H}_2 \mathrm{O}+\mathrm{Cl}_2$
C
$2 \mathrm{NaCl}+2 \mathrm{H}_2 \mathrm{O} \xrightarrow{\text { Electrolysis }} 2 \mathrm{NaOH}+\mathrm{H}_2+\mathrm{Cl}_2$
D
$\mathrm{Ca}(\mathrm{OH})_2+\mathrm{Cl}_2 \longrightarrow \mathrm{CaOCl}_2 \cdot \mathrm{H}_2 \mathrm{O}$
3
TS EAMCET 2023 (Online) 12th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
The nitrate of which of the following metals does mot liberate $\mathrm{NO}_2$ gas on heating?
A
Pb
B
Ba
C
Li
D
K
4
TS EAMCET 2023 (Online) 12th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

What are the correct statements about the elements of group 13 given below?

(I) The stability of +1 oxidation state follows the order $\mathrm{Tl}>\mathrm{In}>\mathrm{Ga}$.

(II) Boron has the lowest melting point and boiling point as it is a non-metal.

(III) Boron shows a maximum covalency of 4 in its compounds.

(IV) The order of atomic radius is $\mathrm{Ga}>\mathrm{Al}>\mathrm{In}$.

(V) Aluminium is passive to concentrated nitric acid.

A
I, III and V only
B
II, IV and V only
C
I, II and IV only
D
III, IV and V only
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