Acids, Bases and Salts — Chemistry STD 10 — Question

Name the gas released at the cathode when acidulated water is electrolyzed.

Name the following:
The catalyst used in the constant process.

An organic substance which gets charred when treated with conc. H₂SO₄.

The following question relate to the extraction of aluminium by electrolysis.
Give the equation for the reaction which takes place at the cathode.

Identify the substance Q based on the information given below:
The pale green solid R turns reddish brown on heating. Its aqueous solution gives a white precipitate with barium chloride solution. The precipitate is insoluble in mineral acids.

Two molecules, which are polar.

What do you notice when acetic acid reacts with litmus ?

Give the importance of the following in living being carbon ?

Give one example in the following case:
An oxide which is a base.