Any substance that in water solution tastes sour and changes the colour of certain indicators (e.g., reddens blue litmus paper), reacts...

Sample Paper for Class 9 SA 1 The surest way to succeed at any examination is to practice from its sample papers or previous year papers. Pr...

Layers Of Atmosphere: Look up at the sky. You probably can see a soft blue cover, maybe with some clouds. Sometimes, the sky might also look...

Class 10 Science NCERT Notes: Class 10 is an important stage of academic life and can be one of the determinants of future direction in term...

NCERT Solutions for class 11 Maths Download NCERT Solutions for class 11 Maths in PDF form – all chapters. Along with the NCERT book, a re...

Biology Projects for Class 12 The study of biology projects is very much important in order to understand various kinds of biological proces...

Electricity is the flow of electrical power or charge. It is a secondary energy source which means that we get it from the conversion of oth...

What is Surface Tension? Surface tension is the attractive force in liquids that pulls surface molecules into the rest of the liquid, minimi...

Acid Definition in Chemistry An acid is a chemical species that donates protons or hydrogen ions and/or accepts electrons. Most acids contai...

Calculus is a branch of mathematics invented in the 17th century by I. Newton and G. W. Leibniz amid controversies of continental proporti...