1
TS EAMCET 2023 (Online) 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the correct statements from the following.

A. In photosynthesis reaction, water is oxidised to oxygen.

B. An example for interstitial hydride is $\mathrm{MgH}_2$.

C. Sodium hexametaphosphate is used in the removal of permanent hardness of water.

A

$A, B, C$

B

A and B only

C

B and C only

D

A and C only

2
TS EAMCET 2023 (Online) 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which one of the following statements is not correct?

A

Molecular formula of calgon is $\mathrm{NaAlSiO}_4$.

B

Beryllium halides are soluble in organic solvents.

C

Among alkali metals, the reducing property of sodium is least in aqueous solution.

D

White metal is an alloy of lithium.

3
TS EAMCET 2023 (Online) 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Thermal decomposition of lithium nitrate gives

A

$\mathrm{LiO}_2, \mathrm{O}_2, \mathrm{NO}_2$

B

$\mathrm{Li}_2 \mathrm{O}, \mathrm{O}_2, \mathrm{~N}_2 \mathrm{O}$

C

$\mathrm{Li}_2 \mathrm{O}, \mathrm{O}_2, \mathrm{~N}_2$

D

$\mathrm{Li}_2 \mathrm{O}, \mathrm{O}_2, \mathrm{NO}_2$

4
TS EAMCET 2023 (Online) 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Consider the following statements about group 13 elements.

A. $\mathrm{AlCl}_3$ gets stability by forming a dimer.

B. $\mathrm{BCl}_3$ is an electron deficient molecule.

C. $E_{M^{3+} / M}^{\circ}(\mathrm{V})$ is +1.26 for aluminium.

D. In +1 oxidation state thallium is unstable.

The incorrect statements are

A

C and D only

B

A and B only

C

A and D only

D

B and C only

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