NCERT Exemplar Problems Class 8 Science Chapter 14 Chemical Effects of Electric Current Question 1 An electric current can produce (a) heating effect (b) chemical effect (c) magnetic effect (d) chemical, heating and magnetic effects Answer. (d) When an electric current is passed through a conducting solution, it causes chemical reactions. The resulting effect is…
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NCERT Exemplar Problems Class 8 Science Chapter 13 Sound Question 1 A list of mediums is given below (i) Wood (ii) Water (iii) Air (iv) Vacuum In which of these mediums can sound travel? (a) (i) and (ii) (b) (i), (ii) and (iii) (c) (iii) and (iv) (d) (ii), (iii) and (iv) Answer. (b) Sound…
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NCERT Exemplar Problems Class 8 Science Chapter 12 Friction Question. 1 Whenever the surfaces in contact tend to move or move with respect to each other, the force of friction comes into play (a) only if the objects are solid (b) only if one of the two objects is liquid (c) only if one of…
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NCERT Exemplar Problems Class 8 Science Chapter 11 Force and Pressure Question. 1 In figure, two boys A and B are shown applying force on a block. If the block moves towards the right, which one of the following statements is correct? (a) Magnitude of force applied by A is greater than that of…
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NCERT Exemplar Problems Class 8 Science Chapter 10 Reaching the Age of Adolescence Question. 1 The belief that the mother is completely responsible for the sex of the child is wrong because the child (a) gets sex chromosome only from the mother (b) develops in the body of the mother (c) gets one sex…
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NCERT Exemplar Problems Class 8 Science Chapter 9 Reproduction in Animals Question. 1 Sets of reproductive terms are given below. Choose the set that has an incorrect combination. (a) Sperm, testis, sperm duct, penis (b) Menstruation, egg, oviduct, uterus (c) Sperm, oviduct, egg, uterus (d) Ovulation, egg, oviduct, uterus Answer. (c) Set (c) has an…
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NCERT Exemplar Problems Class 8 Science chapter 8 Cell Structure and Functions Question. 1 Choose the correct statement with respect to unicellular organisms. (a) In unicellular organisms, tissues work in coordination to perform different functions (b) Unicellular organisms do not require food (c) Unicellular organisms respire and reproduce (d) AH unicellular organisms move by cilia…
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NCERT Exemplar Problems Class 8 Science Chapter 7 Conservation of Plants and Animals Question. 1 Wild buffalo is an endangered species because . (a) its population is diminishing . (b) it has become extinct (c) it is found exclusively in a particular area (d) its poaching is strictly prohibited Answer. (a) Wild buffalo is…
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NCERT Exemplar Problems Class 8 Science Chapter 6 Combustion and Flame Question. 1 A substance which reacts with oxygen giving heat is called a combustible substance. Which one of the following is a combustible substance? (a) Iron nail (b) Glass (c) Stone piece (d) Wood Answer. (d) Wood is a combustible substance. It is…
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NCERT Exemplar Problems Class 8 Science Chapter 5 Coal and Petroleum Question. 1 Various materials which are obtained from nature are called natural resources. Which of the following is not a natural resource? (a) Minerals (b) Water (c) Soil (d) Plastic Answer. (d) Minerals, water and soil are natural resources but plastic is a man-made…
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