1
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

The correct order of boiling points of $\mathrm{H}_2 \mathrm{O}, \mathrm{H}_2 \mathrm{~S}, \mathrm{H}_2 \mathrm{Se}$ and $\mathrm{H}_2$ Te respectively is

A

$\mathrm{H}_2 \mathrm{O}>\mathrm{H}_2 \mathrm{~S}=\mathrm{H}_2 \mathrm{Se}=\mathrm{H}_2 \mathrm{Te}$

B

$\mathrm{H}_2 \mathrm{O}<\mathrm{H}_2 \mathrm{~S}<\mathrm{H}_2 \mathrm{Se}<\mathrm{H}_2 \mathrm{Te}$

C
$\mathrm{H}_2 \mathrm{O}>\mathrm{H}_2 \mathrm{~S}>\mathrm{H}_2 \mathrm{Se}>\mathrm{H}_2 \mathrm{Te}$
D

$\mathrm{H}_2 \mathrm{O}>\mathrm{H}_2 \mathrm{Te}>\mathrm{H}_2 \mathrm{Se}>\mathrm{H}_2 \mathrm{~S}$

2
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following is not a mineral of fluorine?

A

Fluorspar

B

Cryolite

C

Fluoroapatite

D

Carnallite

3
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

The element that even can diffuse through silica glass is

A

He

B

Ar

C

Kr

D

Xe

4
TS EAMCET 2020 (Online) 14th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Pick the correct statement.

I. Borax is white crystalline solid containing $\left[\mathrm{B}_4 \mathrm{O}_5(\mathrm{OH})_4\right]^{2-}$ units.

II. Aqueous solution of borax is acidic in nature.

III. Cobalt gives blue colour in borax bead test.

A

I and II

B

I and III

C

Only II

D

II and III

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