Questions

A person who enjoys in feeling or being pain is called Masochist. The person who enjoys inflicting pain on others is called as Sadist.

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.

We know that,

All nitrates are soluble in water.

All chlorides are soluble in water with the exception of those formed with silver , lead , mercury ions as all halides are soluble.

Sulphates are soluble in water.

Hydroxides are not soluble in water.

Hence, copper(II) hydroxide is not soluble in water.

Plant cell walls are mostly made up of the molecule cellulose. Cellulose is a polysaccharide, a complex sugar made of long chains of glucose.

The cell wall must be made of thick and strong material as it provides the structural shape of the plant and protection from insects and microorganisms.

Legislative branch is made of two houses. 

1. Congress - the Senate and

2. House of Representatives.

Senate- composed of 100 senators two for each states - Vice President of USA is president of Senate.

House of Representatives - The House of Representatives is made up of 435 elected members, divided among the 50 states in proportion to their total population.