S-block elements practice · Mixed difficulty

Magnesia is:

The salts of which alkaline earth metal are used in the form of manure?

The outermost electron is most loosely held in:

Which alkali metal is frequently used in solar cells?

The element which on burning in air gives peroxide is

An aqueous solution of salt of sodium $\left( {\mathrm{Na}X} \right)$ on boiling with $\mathrm{MgC}{\mathrm{l}_2}$ gives white precipitate, hence anion $X$ is:

Reaction of an inorganic sulphite X with dilute ${H_2}S{O_4}$ generates compound Y. Reaction of Y with $NaOH$ gives X. Further, the reaction of X with Y and water affords compound Z. Y and Z respectively, are

Pick out the statement (s) which is (are) not true about the diagonal relationship of Li and Mg
(i) Polarising powers of$\mathrm{L}{\mathrm{i}^ + }\mathrm{andM}{\mathrm{g}^{2 + }}$ are almost same
(ii) L like Li, Mg decomposes water very fast.
(iii)$\mathrm{LiCl andMgC}{\mathrm{l}_2}$ are deliquescent
(iv) Like Li, Mg does not form solid bicarbonates.

Celestine is an ore of:

Salt with which one of the following cation produce yellow colour precipitate with potassium chromate

On heating quick lime with coke in an electric furnace we get:

Black ash is:

When KI is added to acidified solution of sodium nitrite then

Chemical $A$ is used for water softening to remove temporary hardness. $A$ reacts with sodium carbonate to generate caustic soda. When $\mathrm{C}{\mathrm{O}_2}$ is bubbled through $A$ , it turns cloudy. What is $A$ ?

Sodium carbonate solution in water is alkaline due to:

Consider the following statements
(a) Density of sodium is more than potassium.
(b) Potassium carbonate is manufactured by Solvay process
(c) $LiN{O_3}$ evolves $N{O_2}$ gas on heating but $NaN{O_3}$ does not
The correct statement(s) is/are

Which can undergo both oxidation and reduction?

Which of the following is correct?

A colourless salt gives violet colour to Bunsen flame and also turns moisture litmus paper blue. It is:

${\mathrm{K}_2}\mathrm{C}{\mathrm{S}_3}$ can be called as potassium:

An element '${P}$' has atomic number 56. What will be the formula of its halide?

Milk of lime is:

Which property of $\mathrm{N}{\mathrm{a}_2}{\mathrm{S}_2}{\mathrm{O}_3}$ makes it useful in photography?

The decreasing order of second ionization energy of K, Ca and Ba is:

Which of the following hydride conducts electricity in molten state

Incorrect statement among the following is

Which one of the following processes is used for manufacture of calcium?

Lithopone is

Which component of cement sets at the slowest rate?

Sodium is heated in air at ${300^ \circ }C$ to form $X.X$ absorbs $\mathrm{C}{\mathrm{O}_2}$ and forms $\mathrm{N}{\mathrm{a}_2}\mathrm{C}{\mathrm{O}_3}$ and Y? Which of the following is Y?