Duduli

Answer:- The temperature below which a magnetic material behave like a ferromagnetic material and above which it behaves like a paramagnetic material is called Curie temperature of that material.           For Iron = 770⁰C           For Nickel = 358⁰C

Answer:- When acid amide react with bromine and excess of alkali like NaOH or KOH it gives primary amine containing one carbon less than that of parent acid. Therefore this reaction is also called Hoffmann bromamide degradation reaction. e.g

Answer:- Their are some properties of solution which decreases the vapour pressure of solution called colligative properties. ★ It depends only  upon the no. of solute particle present in the solution. Some example of colligative properties are: -   1. Relative lowering of vapour pressure   2. Elevation of boiling point   3. Depression in freezing point   4. Osmotic pressure of the solution

Answer:- The energy possessed by a body by virtue of its motion or by virtue of its position or configuration is called mechanical energy.

Answer:- Workdone is said to be 1Joule if a force of 1N displaces a body through a distance of 1m along the direction of force.

Answer:- Workdone is said to be one erg if a force of one dyne displaces the body through a distance of 1cm along the direction of force. 

Answer:- If the angle between force vector and displacement vector is abtuse then the workdone is called Negative work.

Answer:- If the angle between force vector and displacement vector is 90⁰ then the workdone is called zero work. 

Answer:- If the angle between force vector and displacement vector is acute then the workdone is called positive work.

Answer:- Work is said to be done if a force, acting on a body,displaces the body through a certain distance and the force has some component along the displacements.