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CBSE Questions

Total Questions 9982
What is a Saponification reaction?
What is an Esterification reaction?
How many elements are there in the modern periodic table?
How can we find the atomic mass number of an element if the atomic number is given?
What are the defects of Mendeleev's Periodic table?
What is meant by Cloud Computing?
Find the ratio in which the line segment joining A(6,4) and B(1,-7) is divided by the x axis.
IS IT MORE LIKELY TO A PERSON TO BE STRUCK BY LIGHTNING WHILE STANDING BELOW A TALL TREE OR A SHORT ONE ? GIVE REASON.....
what is the importance of DNA copying in reproduction.explain ?
what is the significance of asexual reproduction ?
how is binary fission different from multiple fission ?
why sweet potato and potato should be called analogous organ?
why is the wing of bird and wing of insect called an analogous organ?
in terms of evolution what is the significance of homology between a human hand and wing of bird ?
consider the following food chain: grass -> mice -> snakes -> peacocks. if in this chain 100J of energy is available at producer level.calculate the energy transferred to the peacock as food ?
explain how sexual reproduction give rise to more viable variations compared to asexual reproduction? how does this affect the evolution of organisms?
what is respiration. explain
what is the evidence for origin of life form in animate organ ?
how are the areas of study evolution and classification inter related ?
give an example of characteristics being used to determine how close 2 species are interms of evolution?