There are given a number of practice problems at the end of each chapter in NCERT books. These problems are designed in different formats to help students acquaint the kind of questions asked in the ...

The p-Block Elements, is an important chapter of CBSE Class 12th Chemistry. This is chapter number 7th of NCERT Class 12th Chemistry textbook. Questions based on this chapter are frequently asked in ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...