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CBSE 2026 Competency Based Questions With Answers: The Central Board of Secondary Education (CBSE) has increased the weightage of competency-based questions in the Class 10 Board Examination to 50%.

CBSE class 10, 12 exams to be conducted on March 3, 2026, rescheduled. Class 10 revised exams to be held on March 11, 2026 Class 12 revised exams to be held on 10 April 2026 The CBSE Board Exam 2026 ...

Like all noble gases, xenon is colourless, odourless and inflammable — but it is also more reactive, and much rarer, than its lighter relatives. Ivan Dmochowski ponders how xenon, though initially ...

IN 1940, we prepared the isotope of mass 211 of element 85 by bombarding bismuth with alpha particles accelerated in the 60-in. cyclotron of the Radiation Laboratory of the University of California 1.