HSC Science Class 11 - Tamil Nadu Board of Secondary Education Question Bank Solutions for Chemistry

RbO₂ is _________.

In case of alkali metal halides, the ionic character increases in the order

In which process, fused sodium hydroxide is electrolysed for the extraction of sodium?

Match the flame colours of the alkali and alkaline earth metal salts in the bunsen burner

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

A colourless solid substance (A) on heating evolved CO₂ and also gave a white residue, soluble in water. Residue also gave CO₂ when treated with dilute HCl.

The compound (X) on heating gives a colourless gas and a residue that is dissolved in water to obtain (B). Excess of CO₂ is bubbled through aqueous solution of B, C is formed. Solid (C) on heating gives back X. (B) is

Among the following the least thermally stable is

Why sodium hydroxide is much more water soluble than sodium chloride?

Write the chemical equations for the reactions involved in the Solvay process of preparation of sodium carbonate.

An alkali metal (x) forms a hydrated sulphate, \[\ce{X2SO4.10H2O}\]. Is the metal more likely to be sodium (or) potassium?

Write a balanced chemical equation for the following chemical reaction.

Lithium metal with nitrogen gas

Write a balanced chemical equation for the following chemical reaction.

heating solid sodium bicarbonate

Write a balanced chemical equation for the following chemical reaction.

solid potassium hydroxide with CO₂

Give the systematic name for the following.

Lye

Give the systematic name for the following.

Washing soda

Give the systematic name for the following.

Soda ash

Give the systematic name for the following.

Trona

When an ideal gas undergoes unrestrained expansion, no cooling occurs because the molecules

Equal weights of methane and oxygen are mixed in an empty container at 298 K. The fraction of total pressure exerted by oxygen is