Question : Nitrification is the biological process of converting.

Option 1: Nitrogen into nitrate

Option 2: Nitrogen into nitrite

Option 3: Ammonia into Nitrite

Option 4: Ammonia into NItrogen

Question : The pair of compounds used as anaesthetic in medicines :

Option 1: Ether, Ammonia

Option 2: Nitrous oxide, Chloroform

Option 3: Chloroform, Nitrogen dioxide

Option 4: Nitrogen dioxide, Ether

Question : ______ gas is used for the manufacturing of bleaching powder.

Option 1: Nitrogen

Option 2: Sulphur

Option 3: Oxygen

Option 4: Chlorine

Question : Nitrogen fixation is a process of

Option 1: assimilation of nitrate

Option 2: utilisation of nitrogen gas

Option 3: conversion of organic nitrogen to proteins

Option 4: conversion of molecular nitrogen to ammonia

Question : The elements known as primary nutrients for plants are:

Option 1: nitrogen, phosphorus and potassium

Option 2: nitrogen, oxygen and silicon

Option 3: potassium, boron and nitrogen

Option 4: nitrogen, phosphorous and iron