Questions

Rio Olympics were held in  Rio de Janeiro, Brazil, from 5 August to 21 August 2016.

• Athletes : 11303
• Countries : 207
• Events : 306

The ability of two or more substances to combine to form other substances is called Reactivity.

An operating system is a program that acts as an intermediary between the user and the computer hardware. The purpose of an OS is to provide a convenient environment in which user can execute programs in a convenient and efficient manner. It is a resource allocator responsible for allocating system resources and a control program which controls the operation of the computer hardware.

Plants grow in size both in height and in girth. Enlargement of cells already present cannnot contribute much to the growth. Only addition of more and more cells could increase the size of the plant considerably.

In all the given options, molecules are containing nonpolar covalent bonds.

Ammonia is a base. One adding ammonia to water,the resulting solution will become basic. pH of an alkaline solution is 7. So the pH will increase