NCERT Class 10 Science Chapter 3 Metals and Non-metals Solutions
NCERT Class 10 Science Chapter 3 Metals and Non-metals Solutions NCERT TEXTBOOK Solutions for Class 10 Science Question 1. Which of the following pairs will give displacement reactions ? (a) NaCl solution and copper metal. (b) MgCl 2 solution and aluminium metal. (c) FeSO 4 solution and silver metal. (d) AgNO 3 solution and copper metal. Answer: (d) AgNO 3 solution and copper metal. Question 2. Which of the following methods is suitable for preventing an iron frying pan from rusting ? (a) Applying grease (b) Applying paint. (c) Applying a coating of zinc (d) All the above. Answer: (c) Applying a coating of zinc. Question 3. An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be (a) calcium (b) carbon (c) silicon (d) iron Answer: (a) Calcium. Question 4. Food cans are coated with tin and not with zinc because (a) zinc is costlier than tin (b) zinc has a higher melting point than tin (c) zinc is ...