NCERT Exemplar Problems Class 8 Science Chapter 18 Pollution of Air and Water Question1 Air is a mixture of various gases. One of the gas is 21% part of the air and is essential for the survival of human beings. This gas is (a) nitrogen (b) oxygen (c) ozone (d) argon Answer. (b) Oxygen makes…
Read more
NCERT Exemplar Problems Class 8 Science Chapter 17 Stars and the Solars System Question1 Morning star is the name given to (a) Pole star (b) star Sirius (c) planet Jupiter (d) planet Venus Answer. (d) Morning star is the name given to the planet Venus because sometimes it appears in the eastern sky before sunrise.…
Read more
NCERT Exemplar Problems Class 8 Science Chapter 16 Light Question 1 Part of the eye which controls the entering of light is called (a) iris (b) cornea (c) lens (d) retina Answer. (a) Iris is a dark muscular structure behind the cornea, which controls the amount of light entering into the eye. Question 2 We…
Read more
NCERT Exemplar Problems Class 8 Science Chapter 15 Some Natural Phenomena Question1 An electroscope is a device which is used to find if an object is (a) charged (b) magnetic (c) free of cracks (d) hot Answer. (a) An electroscope is a device, which is used to test whether an object is charged or not.It…
Read more
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…
Read more
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…
Read more
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…
Read more
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…
Read more
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…
Read more
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…
Read more