11.6 Carboxylic Acid — Chemistry STD 10 — Question

Name the following:
The chief metal which occur in nature in free state as well as in combined state.

The ion responsible for the blue colour of an aqueous solution of a salt.

Write balanced equation for a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.

Name: Two bases which are not alkalis but dissolve in strong alkalis.

Give balanced reactions for the following conversion:
Ammonia to nitrogen using oxygen.

Write observation :
Lead nitrate solution is mixed with dilute hydrochloric acid and heated.

Write the colour of the following salt : Cupric salts.

The list of some organic compounds is given below:
Ethanol, ethane, methane, ethyne and ethene
From the above list, name a compound:
Which forms methanoic acid on oxidation in the presence of copper at 200°C

The compounds of metals found in nature associated with earthly impurities.