cbsenotes • 2012-11-12
Science & Technology Objective Test (Haryana Board) NTSE Science Quiz-17 Q1: The speed of light in vacuum is (a) 3 ×108 m/s (b) 3 ×1010 m/s (c) 3 ×105 m/s (d) Zero Q2: The angle of inc
cbsenotes • 2012-11-10
Atoms and Molecules (Worksheet) Water Molecule Fill in the blanks 1. An element has only one type of __________. 2. According to law of definite proportions- in a chemical substance the elemen
cbsenotes • 2012-10-29
NTSE SAT Quiz-15 (Biology) Biology Quiz Q1: Which of the following is a Gram positive bacteria? (a) Cyanobacteria (b) Eschericilia (c) pseudomonas (d) Preumococus Q2: Cell wall in cork is imp
cbsenotes • 2012-10-26
All about Names of the Chemical Elements 1. There are 115 chemical elements known today to the world. Only 90 are found in nature and the rest are artificially created. 2. A good number of elem
cbsenotes • 2012-10-19
WHY DO WE FALL ILL? 3D image of FluVirus (credits: PHIL) (NCERT Chapter Solutions- Q &A) Q1: Define Health? What do you interpret when we say a person is in good health? Answer: Health is a