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Class 10 · Science
→Why is plaster of Paris stored away from moisture?
Class 10 · Science
→Which substance is formed when gypsum is heated at about 373 K?
Class 10 · Science
→Which statement about water of crystallisation is correct?
Class 10 · Science
→Why does the blue colour return when water is added to white copper sulphate?
Class 10 · Science
→Why does adding washing soda to hard water help in washing?
Class 10 · Science
→The formula of washing soda shows sodium carbonate decahydrate. What does the word decahydrate indicate?
Class 10 · Science
→Why can excess use of only baking soda give a bitter taste to cake?
Class 10 · Science
→What is the main difference between baking soda and baking powder?
Class 10 · Science
→Which main gaseous product is formed when baking soda is heated?
Class 10 · Science
→Why is bleaching powder used to remove colour from coloured substances?
Class 10 · Science
→Which gas is passed over dry slaked lime in the preparation of bleaching powder?
Class 10 · Science
→Sodium hydroxide is used in which of the following industries?
Class 10 · Science
→One use of hydrogen obtained in the chlor-alkali process is in which of the following?
Class 10 · Science
→What is one major use of chlorine obtained in the chlor-alkali process?
Class 10 · Science
→Which base remains in the solution after the chlor-alkali process?
Class 10 · Science
→Aqueous sodium chloride solution is the starting material for which industrial process?
Class 10 · Science
→How does a medicine like magnesium hydroxide help when excess acid is produced in the stomach?
Class 10 · Science
→Why is toothpaste generally made mildly basic for tooth protection?
Class 10 · Science
→If field soil is highly acidic, what happens when lime is added to it?
Class 10 · Science
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