Write the reason for the twinkling of stars in the sky.

Write the reason for the following statements: Esters are used in perfumes and fruit juice.

Write the reason for the following statements: Drinking denatured spirit is harmful.

Write reason for the following: Soft water lathers with soap but not hard water.

Write the reason for the following statement: Hydrocarbons like butane are used as fuel.

Write down the reasons for the following statements . Nichrome is not used as filament in incandescent lamp.

Write down the reasons for the following statements . Fuse wire is melt when electric current increased .

Write the reason for the following: A cricketer moves his hands backwards while holding a catch.