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Previous Year’s CBSE Board Questions – Life Processes – Transportation

Transportation What will happen to a plant if its xylem is removed? (Delhi 2009, 1 mark) Need clues – Click here (a) Draw a sectional view of the human heart and level on it – Pulmonary arteries, vena cava, left ventricle.(b) Why is double circulation of blood necessary in human beings? (AI 2009, 5 marks) …

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Previous Year’s CBSE Board Questions -Some Important Carbon Compounds – Ethanol and Ethanoic acid

Some Important Carbon Compounds – Ethanol and Ethanoic acid 1. Write the name and molecular formula of an organic compound having its name suffixed with ‘-ol’ and having two carbon atoms in its molecule. Write balanced chemical equation to indicate what happens when it is heated with excess of conc. H2S04 and the name of …

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Electric Symbols and Electrical Circuits – Introduction and Quiz

Read First – Electric Current Circuit is a continuous path consisting of conducting wires and other resistances between the terminals. Electric circuit is a continuous path made by conducting wires, devices such as resistances, capacitors etc. and voltage sources. A continuous / closed path consisting of conducting wires and other resistances between the terminals of a …

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