Organic Chemistry — Chemistry STD 10 — Question

If an element has seven electrons in its outermost shell then it is likely to have the ______ (largest/ smallest) atomic size among all the elements in the same period.

Potassium sulphite on reacting with hydrochloric acid releases ________.

Ammonal is a mixture of ________ and __________

The product formed when ethene gas reacts with water in the presence of sulphuric acid is _______ .

The non-metallic component in stainless steel is _______ .

Electrolysis of aqueous sodium chloride solution will form ________ (hydrogen gas/sodium metal) at the cathode.

It is a colourless _______ gas at room temperature.

Correct the following:
Finely divided platinum is used in Haber process

Conc. sulphuric acid is used in the laboratory preparation of nitric acid, as sulphuric acid is ________. [most volatile/least volatile]

Energy released when electron is added to a neutral gaseous atom is called ______.