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During the preparation of hydrogen chloride gas, the gas is usually passed through the guard tube containing calcium chloride during humid climate, as calcium chloride is a good drying agent and absorbs moisture from the gas. Tiwari Academy provides CBSE Class ...
The correct answer is [A] (ii) and (iv).‘A’ represents the diaphragm. During inhalation, it flattens and helps the chest cavity to become larger, allowing air to enter the lungs. It doesn’t decrease residual volume.
The correct answer is [B] Hydrochloric acid, Pepsin, Mucus. In the human alimentary canal, gastric glands of the stomach secrete hydrochloric acid to kill germs, pepsin to digest proteins, and mucus to protect stomach lining.
(i) Seed propagation is not used in bananas because cultivated varieties are seedless and sterile.(ii) Vegetative propagation uses suckers or offsets from the parent plant’s base, which grow into new plants.(iii) Advantage: true-to-type plants; Disadvantage: diseases spread.(iv) ...
A man can survive with one kidney because a single healthy kidney can perform the functions of both: filtering blood, removing waste, balancing water and salts, and producing hormones. The remaining kidney enlarges slightly to compensate. class 10 science sample paper ...
