Chemistry
Match Column A with Column B.
| Column A | Column B | ||
|---|---|---|---|
| (a) | Acid Salt | (i) | Black in colour |
| (b) | Manganese dioxide | (ii) | Brown ppt. |
| (c) | Lead hydroxide | (iii) | Hydrogen chloride |
| (d) | Ferric hydroxide | (iv) | Calcium hydrogen carbonate |
| (e) | Polar compound | (v) | Soluble in excess sodium hydroxide |
Related Questions
The salt which in solution gives a pale green precipitate with sodium hydroxide solution and a white precipitate with barium chloride solution is:
- Iron (III) sulphate
- Iron (II) sulphate
- Iron (II) chloride
- Iron (III) chloride
The figure given below illustrates the apparatus used in the laboratory preparation of nitric acid.
(a) Name A (a liquid), B (a solid) and C (a liquid). (Do not give the formulae).
(b) Write a balanced chemical equation for the above preparation.
(c) Why is an all glass apparatus used ?
(d) The acid prepared is yellow in colour. Why?
(e) How is this colour removed?
Complete the following by choosing the correct answers from the bracket:
(a) HCl in the liquefied form is …………… [neutral / acidic]
(b) Organic compounds are generally soluble in ……………[Water / Organic solvents]
(c) An inert electrode used in electrolysis of copper sulphate solution is …………… [Copper/platinum]
(d) Hydrocarbons having triple bond is …………… [alkenes/alkynes]
(e) An acidic gas gives dense white fumes of …………… [NH4OH/NH4C1] with ammonia.
Identify the following:
(a) The compound formed by carbon and hydrogen only.
(b) A substance that do not conduct electricity in molten or aqueous state.
(c) The energy released when an atom in the gaseous state accepts an electron to form an anion.
(d) The name of the process by which aluminium is obtained from alumina.
(e) The bond formed by mutual sharing of a shared pair of electrons.