Oxide of nitrogen which gives reddish brown colour when exposed to air is

Active mass of 56 g of N₂ contained in 2 ltr.Flask is

The conjugate acid of SO₄^2- is

The flux used in the extraction of iron from Haematite in the blast furnace is

Which of the following not obtained when methyl chloride and n-propyl chloride react with sodium in dry ether

A certain current liberated 0.504g of hydrogen in 2hrs. How many grams of copper can be librated by the same current flowing for the same time in a copper sulphate solution

The method of separation of enantiomers from racemic mixture is known as

The earthy impurities present in the mineral are called

The molecule having zero dipole moment is:

Which of the following is called Rosenmund reaction?