Question: What is meant by p and pH? Answer: p in pH stands for ‘potenz’ in Germany and H is for hydrogen. Question: What are antacids? Explain their role in providing relief from stomach ache. Answer: Antacids are mild base. Antacids neutralise the effect of extra acid produced in the …
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Question: Give composition of the alloy – ‘brass’ and ‘bronze’. Answer: Brass – Cu and Zn Bronze – Cu and Tin Question: What is the formula of rust? Answer: Fe2O3.xH2O. Question: An alloy has low melting point and is, therefore, used for electrical fuse. Name they alloy and write its …
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Chemical Reaction & Equations: 10 Science – Chapter 1 Question: What is a balanced chemical equation? Why should chemical equations be balanced? Answer: An equation for a chemical reaction is an equation in which the number of atoms for each element in the reaction and the total charge is the same …
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Class Notes NCERT Solutions for CBSE Students