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Chemical Reactions and Equation | Important Questions & Answer | Grade X

Short Answer Type Questions[l] [2 Marks] -Year 2015 1.“We need to balance a skeltal chemical equation.” Give reason to justify the statement. Answer. Skeltal chemical equation are unbalanced. We need to balance chemical equation because of law of conservation of mass. It states that ‘matter can neither be created nor be Read more…


NCERT | Biology Book | Class XII

Contents Reproduction in Organisms Sexual Reproduction in Flowering Plants Human Reproduction Reproductive Health Principles of Inheritance and Variation Molecular Basis of Inhertance Evolution Biology in Human Welfare Strategies for Enhancement in Food Production Microbes in Human Welfare Principles and Processes in Biotechnology Biotechnology and its Applications Organisms and Populations Ecosystem Read more…