Which of the following compounds will not evolve H₂ gas on reaction with alkali metals ?

(a)

ethanoic acid

(b)

ethanol

(c)

phenol

(d)

none of these

Lithium shows diagonal relationship with _____________

(a)

sodium

(b)

magnesium

(c)

calcium

(d)

aluminium

Which is the correct sequence of solubility of  carbonates of alkaline earth metals ?

(a)

BaCO₃ > SrCO₃ > CaCO₃ > MgCO₃

(b)

MgCO₃ > CaCO₃ > SrCO₃ > BaCO₃

(c)

CaCO₃ > BaCO₃ > SrCO₃ > BaCO₃

(d)

BaCO₃ > CaCO₃ > SrCO₃ > MaCO₃

The hydration enthalpies of alkali metal ions decreases in ______ order.

(a)

Li⁺ > Na⁺ > K⁺ > Rb⁺ > Cs⁺

(b)

Cs⁺ > Rb⁺ > K⁺ > Na⁺ > Li⁺

(c)

Li⁺ > Rb⁺ > K⁺ > Na⁺ > Cs⁺

(d)

Rb⁺ > Cs⁺ > K⁺ > Na⁺ > Li⁺

The reducing power of a metal depends on various factors. Suggest the factor. which makes Li, the strongest reducing agent in aqueous solution __________

(a)

Sublimation enthalpy

(b)

Ionisation enthalpy

(c)

Hydration enthalpy

(d)

Electron-gain enthalpy

Why Cs and K are used as electrodes in photoelectric cells ___________

(a)

Due to their less ionisation energy

(b)

Due to high ionisation energy

(c)

Due to diagonal relationship

(d)

None of these

Electronic configuration of 2s block of elements is _______________

(a)

ns²

(b)

ns¹

(c)

ns²np¹

(d)

ns²np²

Alkaline earth metals form basic hydroxides. The metal hydroxide which is most basic is _____

(a)

Mg(OH)₂

(b)

Ca(OH)₂

(c)

Sr(OH)₂

(d)

Ba(OH)₂

Lime water turning milky is due to the formation of ______

(a)

calcium carbonate

(b)

calcium hydroxide

(c)

calcium hydroxide

(d)

calcium chloride

Which of the following dissolves in water with a hissing sound?

(a)

bleaching powder

(b)

marble

(c)

quick lime

(d)

slaked lime

Explain what is meant by efflorescence.

Why alkaline earth metals are harder than alkali metals.

Explain why atomic and ionic radius increases from lithium to caesium?

Mention the uses of lithium.

Discuss the biological importance of sodium and potassium.

Mention the uses of plaster of paris

Which would you expect to have a higher melting point magnesium oxide or magnesium fluoride ? Explain your reasoning.

Lithium salts are more soluble than the salts of other metals of group 1. Justify.

Account for the following Li₂CO₃ is considerably less stable and decomposes readily in contrast to other alkali carbonates

Why does Li₂CO₃ decompose at a temperature below 1273K?

Explain the important common features of Group 2 elements.

List out the uses of alkali metals

Discuss the similarities between beryllium and aluminium.