NCERT Exemplar problems for Class 10 Science Chapter 15 Our Environment Short Answer Questions Question 1. Why is improper disposal of waste a curse to environment? Answer. Improper disposal of waste is a curse to environment because it pollutes the environment, air, water, soil and cause harmful effects on living organisms. For example, passage of…
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NCERT Exemplar Class 10 Science Chapter- 14 Sources of Energy Short Answer Type Questions 1 Why is there a need to harness non-conventional sources of energy? Give two main reasons. Answer. There is a need to harness non-conventional sources of energy because: (i) fossil fuels are limited sources and are depleting fast. (ii) burning of…
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NCERT Exemplar Class 10 Science Chapter-13Magnetic Effects of Electric Current Short Answer Type Questions 1.A magnetic compass needle is placed in the plane of paper near point A as shown in figure. In which plane should a straight current carrying conductor be placed so that it passes through A and there is no change in…
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NCERT Exemplar Class 10 Science Chapter-12 Electricity Shod Answer Type Questions 1.Three 2 Ω resistors, A, B and C are connected as shown in figure. Each of them dissipates energy and can withstand a maximum power of 18 W without melting. Find the maximum current that can flow through the three resistors. Answer. Here, P…
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NCERT Exemplar problems for Class 10 Science Chapter 11 Human Eye and Colourful World Short Answer Questions Question 1. A student sitting at the back of the classroom cannot read clearly the letters written on the blackboard. What advice will a doctor give to her? Draw ray diagram for the correction of this defect. Answer.…
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NCERT Exemplar problems for Class 10 Science Chapter 10 Light Reflection and Refraction Short Answer Questions Question 1. Why does a light ray incident on a rectangular glass slab immersed in any medium emerges parallel to itself? Explain using a diagram. Answer. Due to variation in speed of light in different medium, light bends as…
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NCERT Exemplar problems for Class 10 Science Chapter 9 Heredity and Evolution Short Answer Questions Question 1. Do genetic combination of mothers play a significant role in determining the sex of new born? Answer. No, mothers have no role in determining the sex of the new born. Mothers have a pair of X chromosome. And…
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NCERT Exemplar problems for Class 10 Science Chapter 8 How do Organisms Reproduce ? Short Answer Questions Question.1 In a bisexual flower, inspite of the young stamens being removed artificially, the flower produces fruit. Provide a suitable explanation for the above situation. Answer. Removal of stamens of a bisexual flower will not affect pollination…
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NCERT Exemplar Class 10 Science Chapter-7 Control And Coordination Short Answer Type Questions 1.Label the parts (a), (b), (c) and (d) and show the direction of flow of electrical signals in the given figure. Answer. (a) Sensory neuron. (b) Spinal cord (CNS). (c) Motor neuron. (d) Effector (Muscle in arm). 2.Name the plant hormones responsible…
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NCERT Exemplar Class 10 Science Chapter-6 Life Processes Short Answer Type Questions 1.“All plants give out oxygen during day and carbon dioxide during night”. Do you agree with this statement? Give reason. Answer.Yes, respiration takes place throughout the day and night but photosynthesis takes place only during day time. During day time, as the…
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