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

The chemical name of calgon is

A
sodium hexametaphosphite
B
potassium hexametaphosphate
C
calcium hexametaphosphate
D
sodium hexametaphosphate
2
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following set of metals have strong tendency to form super oxides?

A
$\mathrm{Li}, \mathrm{Na}, \mathrm{Be}$
B
$\mathrm{Be}, \mathrm{Mg}, \mathrm{Ca}$
C
$\mathrm{K}, \mathrm{Rb}, \mathrm{Cs}$
D
$\mathrm{Li}, \mathrm{Be}, \mathrm{Mg}$
3
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the correct statements with respect to compounds of beryllium.

I. Beryllium oxide is amphoteric in nature.

II. Beryllium hydride is formed by the reaction of beryllium with hydrogen.

III. Beryllium hydride is formed by the reaction of beryllium chloride with lithium aluminium hydride.

IV. Beryllium sulpahte is the least soluble sulphate among the sulphates of alkaline earth metals.

A
I and II only
B
I and III only
C
II and IV only
D
II and III only
4
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In group 13 of the long form of periodic table an element $X$ has a boiling point of $T_2(\mathrm{~K})$ and melting point of $T_1(\mathrm{~K})$. Identify the element $X$ for which $T_2-T_1(\mathrm{~K})$ is maximum

A
Al
B
Ga
C
In
D
B
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