Chapter 16: Management of Natural Resources
Question 1What changes would you suggest in your home in order to be environment friendly?Answer:We would suggest following changes in our home to make it environment friendly. Question 2Can you suggest some changes in your school which…
Chapter 15: Our Environment
Question 1Which of the following groups contain only biodegradable item ?(a) Grass, flowers and leather(b) Grass, wood and plastic(c) Fruit peels, cake and lime juice(d) Cake, wood and grassAnswer:(a) Grass, flowers and leather. Question 2Which of the…
Chapter 14: Sources of Energy
Question 1A solar water heater cannot be used to get hot water on(a) a sunny day(b) a cloudy day(c) a hot day(d) a windy dayAnswer:(b) A cloudy day. Question 2Which of the following is not an example…
Chapter 13: Magnetic Effects of Electric Current
Question 1Which of the following correctly describes the magnetic field near a long straight wire ?(i) the field consists of straight lines perpendicular to the wire(ii) the field consists of straight lines parallel to the wire(iii) the…
Chapter 12: Electricity
Question 1A piece of wire of resistance R is cut into five equal parts. These parts are then connected in parallel. If the equivalent resistance of this combination is R’, then the ratio R/R’ is :(a) 125(b) 15(c) 5(d)…
Chapter 11: Human Eye and Colourful World
Question 1The human eye can focus objects at different distances by adjusting the focal length of the eye lens. This is due to(a) presbyopia(b) accommodation(c) near – sightedness(d) far – sightednessAnswer:(b) Accommodation Question 2The human eye forms…
Chapter 10: Light Reflection and Refraction
Question 1Which one of the following materials cannot be used to make a lens ?(a) Water(b) Glass(c) Plastic(d) ClayAnswer:(d) Clay Question 2The image formed by a concave mirror is observed to be virtual, erect and larger than…
Chapter 9: Heredity and Evolution
Question 1.A Mendelian experiment consisted of breeding tall pea plants bearing violet flowers with short pea plants bearing whfte flowers. The progeny all bore violet flowers, but almost half of them are short. This suggests that the…
Chapter 8: How do Organisms Reproduce?
Question 1Asexual reproduction takes place through budding in(a) amoeba(b) yeast(c) plasmodium(d) leishmaniaAnswer:(b) Yeast Question 2Which of the following is not a part of the female reproductive system in human beings ?(a) Ovary(b) Uterus(c) Vas deferens(d) Fallopian tubeAnswer:(c)…
Chapter 7: Control and Coordination
Question 1Which of the following is a plant hormone? (a) Insulin(b) Thyroxin(c) Oestrogen(d) Cytokinin Answer:(d) Cytokinin Question 2The gap between two neurons is called a(a) dendrite(b) synapse(c) axon(d) impulseAnswer:(b) Synapse Question 3The brain is responsible for(a) thinking(b)…
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