The dissociation of H2S is suppressed in the presence of HCl. Name the phenomenon.

The dissociation of HCN is suppressed by the addition of HCI. Explain.

Tomatoes, carrots and chillies are red in colour due to the presence of pigments. Name the pigment.

H_2S is used as hydrogen donor in

Aniline treated with Br_2 in the presence of H_2O gives ………..

Decompositon of H_2O_2 takes place in presence of a catalyst_________

When ethanol is heated at 170^(@)C with conc. H_(2)SO_(4) , it forms an organic compound 'A' and water. The compound 'A' reacts with hydrogen in the presence of nickel to form 'B'. iii. Name the products formed when 'B' undergoes combustion in presence of sufficient amount of oxygen. Write its chemical equation.

Polyps like Obelia produce medusae asexually and medusae produce polyps sexually. Name this phenomenon.

H_2S is less acidic than H_2Te why ?

can you tell the names of primates show the presence of menstrual cycle?

When ethyl alcohol ( C_(2)H_(5)OH ) reacts with thionyl chloride, in the presence of pyridine , the product obtained is ________.