1
TG EAPCET 2025 (Online) 4th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A sample of water contains $\mathrm{Mg}\left(\mathrm{HCO}_3\right)_2$ and $\mathrm{Ca}\left(\mathrm{HCO}_3\right)_2$ On boiling this water, these hydrogen carbonates are removed as precipitates. The precipitates are

A

$\mathrm{MgCO}_3, \mathrm{CaCO}_3$

B

$\mathrm{Mg}(\mathrm{OH})_2, \mathrm{Ca}(\mathrm{OH})_2$

C

$\mathrm{Mg}(\mathrm{OH})_2, \mathrm{CaCO}_3$

D

$\mathrm{MgCO}_3, \mathrm{Ca}(\mathrm{OH})_2$

2
TG EAPCET 2025 (Online) 4th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following statements is not correct?

A

Carbonates of alkaline earth metals are insoluble in water.

B

Beryllium halides are covalent in nature.

C

The super oxides of alkali metals are colourless.

D

Alkali metal halides have high negative enthalpies of formation.

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

The order of negative standard potential values of Li, $\mathrm{Na}, \mathrm{K}$ is

A

$\mathrm{Li}>\mathrm{Na}>\mathrm{K}$

B

$\mathrm{K}>\mathrm{Na}>\mathrm{Li}$

C

$\mathrm{Na}>\mathrm{K}>\mathrm{Li}$

D

$\mathrm{Li}>\mathrm{K}>\mathrm{Na}$

4
TG EAPCET 2025 (Online) 4th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In which of the following reactions, hydrogen is evolved?

I. Reaction of sodium borohydride with iodine

II. Oxidation of diborane

III. Reaction of boron trifluoride with sodium hydride

IV. Hydrolysis of diborane

A

I, IV only

B

I, II only

C

III, IV only

D

I,II, IV only

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