Electrolysis — Chemistry STD 10 — Question

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

Cations are formed by ____ (loss/gain) of electrons and anions are formed by _________ (loss/gain) of electrons.

As we descend the electrochemical series containing cations, the tendency of the cations to get ________ at the cathode increases.

An example of a weak acid is ________ [HCI/ H₂CO₃/ HNO₃/ H₂SO₄]

Aluminium powder is a constituent of paints and prevents ________. [conduction of electric current/formation of rust/heat radiation]

Cold, dilute nitric acid reacts with copper to give ______.

Ferrous salts are __________ in colour.

One volume of water at room temperature absorbs ________ volumes of hydrogen chloride gas. [700/450]

Cations migrate to _______ during electrolysis.

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.