STUDY EDUCATION - MP Board Solutions

NCERT Class 10 Science Chapter 4 Carbon and Its Compounds Solutions NCERT TEXTBOOK Solutions for Class 10 Science Question 1 Ethane, with the molecular formula C 2 H 6 has (a) 6 covalent bonds (b) 7 covalent bonds (c) 8 covalent bonds (d) 9 covalent bonds Answer: (b) 7 covalent bonds. Question 2 Butanone is a four-carbon compound with the functional group (a) carboxylic acid (b) aldehyde (c) ketone (d) alcohol Answer: (c) Ketone. Question 3 While cooking, if the bottom of the vessel is getting blackened on the outside, it means that (a) the food is not cooked completely. (b) the fuel is not burning completely. (c) the fuel is wet. (d) the fuel is burning completely. Answer: (b) The fuel is not burning completely. Question 4 Explain the nature of the covalent bond using the bond formation in CH 3 Cl. Answer: Covalent bond is formed by sharing of electrons so that the combining atoms complete their outermost shell. In CH 3 Cl : C = 6, H = 1 and Cl = 17 And their electronic configuration...

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 ...