List of top Chemistry Questions on GROUP 1 ELEMENTS

$ {BaO_2}$ and ozone reacts to produce

Bleaching powder is obtained by treating $ {Cl_2}$ with

Colour imparted to the flame by $Ba^{2+}$ is

Which one of the following has maximum lattice energy?

The compound A on heating gives a colourless gas and a residue that is dissolved in water to obtain B. Excess of ${CO_2}$ is bubbled through aqueous solution of B, C is formed which is recovered in the solid form. Solid C on gentle heating gives back A. The compound A is -

Compound formed by electrolysis of a mixture of ethanol and NaCl is

Soda ash is

In the electrolysis of which solution, $OH^-$ ions are discharged in preference to $Cl^-$ ions ?

Property of the alkaline earth metals that increases with their atomic number is

Beryllium and aluminium exhibit many properties which are similar. But the two elements differ in

Which one of the following compounds is a peroxide?

The low solubility of barium sulphate in water is due to

Which of the following configurations represents the metallic element?

The highest lattice energy corresponds to

The characteristic not related to alkali metal is

$K, Rb$ and $Cs$ form superoxides. The stability of the superoxides increases from '$K$' to '$Cs$' due to decrease in lattice energy. The correct answer is

The correct order of stability of the superoxides is

$0.42 \,g$ magnesium carbonate and $0.5\, g$ calcium carbonate are; heated strongly. What is the quantity left?

Formula of microcosmic salt is

Among the alkali metals, lithium salts exhibit the least electrical conductance in aqueous solutions. Smaller the radius of the hydrated cation, lower is the electrical conductance in aqueous solutions.

Equimolar solutions of the following were prepared in water separately. Which one of the solutions will record the highest pH ?

Which of the following statements are correct for alkali metal compounds? (i) Superoxides are paramagnetic in nature. (ii) The basic strengths of hydroxides increases down the group. (iii) The conductivity of chlorides in their aqueous solutions decreases down the group. (iv) The basic nature of carbonates in aqueous solutions is due to cationic hydrolysis.

The sequence of ionic mobility in aqueous solution is