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  Sources of Energy Chapter Wise Important Questions Class 10 Science Important Question for Class 10 Science Sources of Energy PDF will help you in scoring more marks.. This consists of 1 mark Questions, 3 Mark Numericals Questions, 5 Marks Numerical Questions and previous year questions from Sources of Energy Chapter. Sources  of Energy Chapter Wise Important Questions Class 10 Science Very Short Answer Type Questions [1 Mark] – Year 2015 1.Name any two fossil fuels. Ans.  A good fuel is the one which  has high calorific value,  is non-polluting,  is easy to transport and easily available,  has moderate ignition temperature. 2.Mention the purpose of blackening the interior of a solar cooker. Answer.  The purpose of blackening the interior of a solar cooker is that the black surface absorbs more heat radiations of incident solar energy (about 98%) as compare to white or other light coloured surface Short Answer Type Question[ll] [3 Marks] – Year ...

  Magnetic Effects of Electric Current Chapter Wise Important Questions Class 10 Science Aditya Kumar Important Question for Class 10 Science Magnetic Effects of Electric Current PDF will help you in scoring more marks.. This consists of 1 mark Questions, 3 Mark Numericals Questions, 5 Marks Numerical Questions and previous year questions from Magnetic Effects of Electric Current Chapter. Magnetic  Effects of Electric Current Chapter Wise Important Questions Class 10 Science PREVIOUS YEARS’ QUESTIONS Short Answer Type Questions [II] [3 Marks] – Year 2015 1.Describe an activity to show that the magnetic field lines produced when current is passed through the circular coil. Answer. Aim :  To study the characteristics of magnetic field produced by a current carrying circular coil at its centre. Apparatus Required :  Rectangular cardboard having two holes, Thick copper circular coils of different radii having known number of turns, key, battery, rheostat, stand, iron fil...