Sources of Energy Class 10 Important Questions with Answers Science Chapter 14 Question 1. The biggest source of energy on Earths surface is (a) Biomass (b) Solar radiations (c) Tides (d) Winds (2020) Answer: (b) The biggest source of energy on Earths surface is solar radiations. Answer question numbers 2-5 on the basis of your…
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Magnetic Effects of Electric Current Class 10 Important Questions with Answers Science Chapter 13 Question 1. What is meant by magnetic field? Answer: Magnetic field : It is defined as the space surrounding the magnet in which magnetic force can be experienced. Question 2. Draw magnetic field lines around a bar magnet. Name the device…
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Electricity Class 10 Important Questions with Answers Science Chapter 12 Question 1. A current of 10 A flows through a conductor for two minutes. (i) Calculate the amount of charge passed through any area of cross section of the conductor. (ii) If the charge of an electron is 1.6 × 10-19 C, then calculate the…
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Human Eye and Colourful World Class 10 Important Questions with Answers Science Chapter 11 Question 1. State one function of iris in human eye. (AI 2012) Answer: Irish adark muscular diaphragm that controls the size of the pupil. Question 2. State one function of the crystalline lens in the human eye. (Foreign 2012) Answer: The…
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Light Reflection and Refraction Class 10 Important Questions with Answers Science Chapter 10 Question 1. The laws of reflection hold true for (a) plane mirrors only (b) concave mirrors only (c) convex mirrors only (d) all reflecting surface Answer: (d) The laws of reflection holds true for all reflecting surface. Question 2. List four characteristics…
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Heredity and Evolution Class 10 Important Questions with Answers Science Chapter 9 Question 1. All the variations in a species do not have equal chances of survival. Why? (Foreign 2014) Answer: All the variations do not have equal chances of survival in the environment in which they live. Depending on the nature of variations, different…
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How Do Organisms Reproduce Class 10 Important Questions with Answers Science Chapter 8 Question 1. Newly formed DNA copies may not be identical at times. Give one reason. (AI2017) Answer: When a cell reproduces, DNA replication occurs which results in formation of two similar copies of DNA. The process of copying the DNA leads to…
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Control and Coordination Class 10 Important Questions with Answers Science Chapter 7 Question 1. Which is the largest and most prominent part of the brain? (Board Term I, 2013) Answer: Cerebrum is the largest and most prominent part of the brain. Question 2. (a) Name one gustatory receptor and one olfactory receptor in human beings.…
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Life Processes Class 10 Important Questions with Answers Science Chapter 6 Question 1. Most of the digestion and absorption of the food takes place in the (a) small intestine (b) liver (c) stomach (d) large intestine. (2020) Answer: (a) small intestine Question 2. Mention the raw materials required for photosynthesis. (Board Term I, 2016) Answer:…
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Periodic Classification of Elements Class 10 Important Questions with Answers Science Chapter 5 Question 1. State Mendeleev s Periodic law. Answer: Medeleev’s periodic law states that the properties of elements are periodic function of their atomic masses. Question 2. Why did Mendeleev leave some gaps in the Periodic table? Answer: Mendeleev left some gaps in…
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