When a person inside a lift, -will feel superweightlessness? Explain with equation.

The purest form of iron is prepared by oxidising the impurities present in cast iron in a reverberatory furnace. What type of iron is used for lining inside the furnace ? Explain with equation.

Potassium permanganate has different equivalent weights in different reaction— Explain with equation.

What will be the major product when propyne is treated with aqueous H_2SO_4 ? Explain with equation.

What will be the major product when propyne is treated with aqueous H_2SO_4 ? Explain with equation.

When Cu^(2+) ion is treated with KI, a white precipitate is formed. Explain the reaction with the help of chemical equation.

What is the method used in the purification of Zr and Ti? Explain with equation.

When urea is added to water the freezing point decreases. Explain why.

A wooden block is floating on water kept in a beaker. 40% of the block is above the water surface. Now the beaker is kept inside a lift that starts going upward with acceleration equal to g/2. The block will then