What is the function of potassium nitrate in gun powder?
It is added to provide oxygen
KNO3 is included in gun powder to provide a supply of oxygen.
Which of the following is commercially known as oxone?
Which of the following is called black ash?
An alloy of which pair of metals is liquid at ordinary temperature and is used in special thermometers used for finding temperature above the boiling point of mercury.
Which of the following compounds is used in preparation of green fire?
Which of the following is obtained on hydrolysis of Mg2C3?
Which of the following is a component of most kidney stones?
Which property of sodium is being used in street lights?
Which of the following metals is sensitive to a wide range of photons from across the entire visible range of the electromagnetic spectrum?
Out of the following hydroxide, select the one that has highest solubility and the least negative lattice enthalpy.
An aqueous solution of salt ‘R’ when treated with dil HCl, a colourless gas is given out. The gas so evolved when passed through acidified KMnO4 decolourises KMnO4 solution. The salt ‘R’ is