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Define sedimentation

Pure substances are obtained only after refining, filtration of any mixture. Various methods are involved in separating a mixture. To separate a... View Article

Define physical change

The type of change in which the physical properties of a material change. It can be changed in shape, state of matter, color, density, size,... View Article

What is electric cell?

Answer: The branch of chemistry which deals with the conversion of chemical energy into electrical energy and vice versa is called... View Article

Write a short note on pi

The word Pi in mathematics is defined as the ratio of the diameter of a circle against its circumference. Pi is constant value, it indicates that... View Article

What is cytoplasm?

Cells are the basic structural and functional unit of life. The term cells was first coined in 1665 by a British scientist Robert Hooke. He was... View Article