Modern Periodic Table and Periodic Properties — Chemistry STD 10 — Question

The ions which discharge on the positive electrode during electrolysis ____________electrons. Thus, the ions are said to be _____________.

 

Methane can be prepared by heating _______ with solid _______ .

The type of salt formed when excess of caustic soda reacts with sulphuric acid is _______ .

For test of unsaturation _____ is used.

CHO is the functional group of an __________. (alcohol, aldehyde)

Most of the organic compounds have ________ melting and boiling points.[high/low]

The electrovalent bond or ionic bond is called as _____ bond.

Fill in the blanks with correct words from the brackets:
Alkenes are the (a) _______ (analogous/homologous) series of (b ) ______ (saturated /unsaturated) hydrocarbons. They differ from alkanes due to presence of (c) _______ (double/ single) bonds. Alkenes mainly undergo (d) ______ (addition/ substitution) reactions.

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

________ on strong heating leaves behind a residue which is black in colour. [Copper nitrate/Zinc nitrate/Lead nitrate]