SCIENCE Class : VIII Date : 23rd November 2015 Max Marks : 80 Time : 11:00 to 12:30 noon
Instructions to Candidates : Roll No.
01. This question paper has 40 objective questions. In addition to this question paper, you are also Centre No. given an answer-sheet. 02. Read the instructions carefully for each section before attempting it. 03. For each correct answer 2 marks will be Male / Female ______awarded and there is no negative marking. 04. On the answer-sheet, fill up all the entries carefully in the space provided, ONLY IN Name of the candidate : (In English only, as you would BLOCK CAPITAL LETTERS. like it to be printed on the certificate).
05. Incomplete / incorrect / carelessly filled ______information may disqualify your candidature. 06. On the answer-sheet, use PENCIL / BLUE ______or BLACK BALL PEN. ______07. No extra sheet will be provided for rough-
work. Use the space available in the paper ______for your rough- work. 08. Use of calculator is not permitted. 09. No student is permitted to leave the examination hall before time is complete. 10. Use of unfair means shall invite cancellation Signature of the Signature of of the test. invigilator the candidate
AMITY INSTITUTE FOR COMPETITIVE EXAMINATIONS Head Office: E-26, Defence Colony, New Delhi - 110024 Ph.: 011-24336143/44, 24331000-2 Amity Contact Points: Delhi Centres: Amity International School, M Block, Saket, New Delhi Ph.: 011-29563047; Amity International School, Sector 7, Pushp Vihar, New Delhi Ph.: 011-29561561 East Delhi : Amity International School, Mayur Vihar Phase-I Ext., Delhi, Ph.: 011-22710588, Janakpuri: B-1/632, main Nazafgarh Road, Janakpuri, New Delhi - 110058, Ph.: 011-25573111/12/13/14 Noida: Amity International School, J-Block, First Floor, Amity Campus, Sector-44, Noida-201303, Ph.:0120-2431842, 2431839 Ghaziabad Centre: Amity International School, HS-1, Sector-1, Vasundhara, Ghaziabad Ph.: 0120-2699456, 2699290, 2699291; Amity International School Campus, Sec-6, Vasundhara Yojna, Ghaziabad Ph.: 0120-4283778, 2699002 Gurgaon: Amity International School, Sec-46, Gurgaon, Haryana Ph.: 0124-3240105; Amity International School, Sec-43, Gurgaon, Haryana, Ph.:0124-2385110 Lucknow: Amity International School, Viraj Khand - 5, Gomti Nagar, Lucknow, Uttar Pradesh, Ph. : 081-273-68742/43, 0522-6523892 Website: www.amity.edu/aice Each question has four alternatives marked (A), (B), (C) and (D), but only one of these alternatives is the correct answer. Find the correct answer.
1. Most polluted stretches of river Ganga are near (A) Patna (B) Kanpur (C) Varanasi (D) Allahabad 2. Which of the following statements are true or false ? (i) Generally, June to September is the rainy season in India (ii) The soil is watered after sowing (iii) Only a few centimetres of the top layer of the soil supports plant growth (iv) Continuous growing of crops makes the soil poorer in certain nutrients (v) Kharif crops are grown in the winter season (vi) Rhizobium bacteria, present in the nodules of the roots of the leguminous plants, fix atmospheric nitrogen (A) true, false, true, true, true, true (B) true, true, true, true, false, true (C) true, false, true, true, false, true (D) true, false, true, true, false, false 3. (i) It improves the texture of the soil (ii) It increases the number of soil friendly microbes (iii) It enhances the water holding capacity of the soil (iv) It makes the soil porous due to which the exchange of gases become easy Here ‘It’ stands for (A) humus (B) manure (C) fertilizer (D) dung 4. Which one of the following is prepared from coal, water and air ? (A) Nylon (B) Terylene (C) Acrylic (D) Teflon 5. Which one of the following is the largest planet of the solar system ? (A) Jupiter (B) Saturn (C) Mars (D) Uranus
AMITY INSTITUTE FOR COMPETITIVE EXAMINATIONS : Ph. : 24336143/44, 25573111/2/3/4, 0120-2431839/42 [2]
Science- Class - 8, Nov. - 2015 6. Categorise the following diseases into viral, fungal, protozoan or bacterial diseases, by counting their numbers : Polio, Dengue, Typhoid, Rabies, Chickenpox, Ringworm, Common cold, Plague, Cholera, Kala Azar, Measles, Malaria, Tuberculosis, Athlete foot, Influenza, Whooping cough, Filariasis, Hepatitis B, Mumps, AIDS Viral diseases Fungal diseases Protozoan diseases Bacterial disease (A) 10 1 3 6 (B) 9 2 3 6 (C) 9 2 4 5 (D) 10 2 3 5 7. Which one of the following statements is incorrect ? (A) Sugar reduces the moisture content and inhibits the growth of bacteria which spoil foods like jams and jellies (B) Disease causing microorganisms are called pathogens (C) Edward Jenner discovered bacterium (Bacillus anthracts) which causes anthrax disease (D) Low temperature inhibits the growth of microbes 8. Read the following paragraph carefully and fill in the blanks with appropriate words : Our atmosphere has ...... nitrogen gas. Nitrogen is one of the essential ...... of all living ...... as part of proteins, chlorophyll, nucleic acids and vitamins. The atmospheric nitrogen cannot be ...... directly by plants and animals. Certain ...... and blue ...... algae present in the soil ...... nitrogen from the atmosphere and convert it into ...... of nitrogen. (A) 78%, constituents, organisms, absorbed, bacteria, green, trap, compounds (B) 78%, constituents, organisms, taken, bacteria, green, fix, compounds (C) 79%, constituents, species, taken, bacteria, green, fix, compounds (D) 79%, part, species, absorbed, microorganisms, red, trap, compounds
AMITY INSTITUTE FOR COMPETITIVE EXAMINATIONS : Ph. : 24336143/44, 25573111/2/3/4, 0120-2431839/42 [3] 9. Esters are organic compounds. Polyesters are extensively used in manufacturing fabrics. In fruits, esters are the chemicals which (A) help them in ripening (B) help in increasing pulp in them (C) give smell in them (D) give them beautiful colours 10. Which one of the following metals is not ‘lustrous, malleable, ductile, sonorous and good conductor of heat and electricity’ ? (A) Aluminium (B) Mercury (C)Copper (D)Iron 11. Which of the following statements are true or false ? (i) One non-metal is one of the essential constituents of all living organisms (ii) The atom of an element remains unaffected by the physical changes in the element (iii) Copper reacts with dilute hydrochloric acid, when it is heated (iv) Magnesium ribbon burns in oxygen, forming magnesium oxide which dissolves in water. This oxide in water is acidic in nature (v) Generally, metals are hard. But metals like sodium and potassium are soft and can be even cut with knife (vi) There are no more than 92 naturally occurring elements. In these elements, metals and non-metals are almost of equal numbers (A) true, false, true, false, true, false (B) true, true, false, true, true, false (C) true, false, false, true, true, true (D) true, true, false, false, true, false 12. Which one of the following fuels is different from the other three ? (A) Coal (B) Wood (C) Petroleum (D) Natural gas 13. Which one of the following is not a constituent of safety match ? (A) Antimony trisulphide (B) Red sulphur (C) Potassium chlorate (D) Red phosphorus
AMITY INSTITUTE FOR COMPETITIVE EXAMINATIONS : Ph. : 24336143/44, 25573111/2/3/4, 0120-2431839/42 [4] 14. Variety of products are obtained commercially from coal and petroleum. Due to great commercial importance, petroleum is also called ‘black gold’. In the following crossword, products obtained directly or indirectly from coal and petroleum are given.
C D N A P T H A L A N E C Y S M E L E M E N C X O E B I T U M E N O O P K S A R R O W S G N A E E X P L O S I V E S L L G F E A C R Y L I C T P G I T E H U M P S S A A D B R P E R F U M E R I R R O U M E T A L S U N U E L D I E S E L E R T G S A D C N Y L O N E S S P A R A F F I N W A X B O L D L C A N D L E S K E R O S E N E O I L L
The number of such products in the crossword is (A) 18 (B) 19 (C) 17 (D) 16
15. Which one of the following statements is incorrect ? (A) Carbon dioxide is the best extinguisher of fires (B) When released from cylinder, carbon dioxide expands enormously in volume and hence cools down (C) So, a cold cover forms a blanket around the fire, also cutting off oxygen from the air (D) Because oxygen is heavier than carbon dioxide, so oxygen goes away from the fire
AMITY INSTITUTE FOR COMPETITIVE EXAMINATIONS : Ph. : 24336143/44, 25573111/2/3/4, 0120-2431839/42 [5] 16. Read the following paragraph carefully and fill in the blanks with appropriate words : Petroleum was ...... from ...... living in the sea. As these ...... died, their ...... settled at the bottom of the sea ad got covered with layers of sand and clay. Over ...... of years, absence of ...... , high ...... and high pressure ...... the dead ...... into petroleum and ...... gas. (A) obtained, organisms, organisms, bodies, million, light, moisture, transformed, organisms, petroleum (B) formed, organisms, organisms, remains, thousands, light, temperature, transformed, organisms, natural (C) formed, creatures, creatures, bodies, thousands, air, temperature, transformed, creatures, petroleum (D) formed, organisms, organisms, bodies, millions, air, temperature, transformed, organisms, natural 17. Match the statements of Column-I and Column-II and tick-mark() the correct matching, given as one of the four alternatives A, B, C and D. Column I Column II (a) Areas reserved for wildlife where (i) Biosphere Reserves they can freely use the habitats and natural resources (b) Areas which provide protection and (ii) Pachmarhi Biosphere suitable living conditions to wild animals Reserves (c) Finest Indian teak is found in this forest (iii) Wildlife Sanctuary (d) Areas meant for conservation of (iv) Satpura National Park variety of plants, animals and microorganisms (e) Indian giant squirrel and flying squirrel (v) National Park are found in this area (A) (a) - v, (b) - iii, (c) - ii, (d) - i, (e) - iv (B) (a) - iii, (b) - v, (c) - iv, (d) - i, (e) - ii (C) (a) - v, (b) - iii, (c) - iv, (d) - i, (e) - ii (D) (a) - iii, (b) - v, (c) - ii, (d) - i, (e) - iv
AMITY INSTITUTE FOR COMPETITIVE EXAMINATIONS : Ph. : 24336143/44, 25573111/2/3/4, 0120-2431839/42 [6] 18. Deforestation may not lead to (A) global warming (B) desertification (C) decrease in population of wildlife (D) decrease in population of humans 19. Which one of the following statements is not correct ? (A) Species of plants or animals which are found exclusively and naturally in a particular area are called endemic species (B) Even if the deforested area is left undisturbed for a long time, it cannot be reforested again unless some special efforts are undertaken (C) Paper can be recycled five to seven times, for use (D) Even climate is a part of ecosystem 20. Match the statements of Column-I and Column-II and tick-mark() the correct matching, given as one of the four alternatives A, B, C and D. Column I Column II (a) Living substance of the cell (i) nucleus (b) Golgi bodies and mitochondria (ii) plant cell (c) Chromosomes (iii) chromosomes (d) Plastids (iv) protoplasm (e) Genes (v) animal cells (f) Smaller vacuoles (vi) cytoplasm (A) (a) - iv, (b) - vi, (c) - i, (d) - ii, (e) - iii, (f) - v (B) (a) - vi, (b) - iv, (c) - i, (d) - ii, (e) - iii, (f) - v (C) (a) - iv, (b) - vi, (c) - v, (d) - ii, (e) - iii, (f) - i (D) (a) - vi, (b) - iv, (c) - v, (d) - ii, (e) - iii, (f) - i 21. Which one of the following is not made of a single cell ? (A) Egg of an ostrich (B) White blood cell (C)Sperm (D)Embryo 22. Which one of the following is not a ductless gland ? (A) Adrenal gland (B) Thyroid gland (C) Pituitary gland (D) Salivary glands
AMITY INSTITUTE FOR COMPETITIVE EXAMINATIONS : Ph. : 24336143/44, 25573111/2/3/4, 0120-2431839/42 [7] 23. Match the statements of Column-I and Column-II and tick-mark() the correct matching, given as one of the four alternatives A, B, C and D. Column I Column II (a) External fertilization (i) dogs, cats (b) Oviparous animals (ii) frogs, silkworms (c) Viviparous animals (iii) frogs, fish (d) Metamorphosis (iv) hens, ostriches (A) (a) - ii, (b) - iv, (c) - i, (d) - iii (B) (a) - iii, (b) - iv, (c) - i, (d) - ii (C) (a) - ii, (b) - i, (c) - iv, (d) - iii (D) (a) - iii, (b) - i, (c) - iv, (d) - ii 24. Which of the following statements or true or false ? (i) In case of test-tube babies, freshly released egg and sperms are kept together for fertilization, outside the body (ii) Asexual reproduction takes place in many plants and also in some animals (iii) An embryo is made up of a single cell (iv) Birds are viviparous animals (v) Reproduction is essential for the continuation of a species (vi) Sperms from males and ova from females fuse to form a zygote (A) true, true, true, false, true, false (B) false, true, false, false, true, true (C) true, true, false, fasle, true, true (D) true, true, false, true, false, true 25. Read the following paragraph carefully and fill in the blanks with appropriate words : Fertilisation results in the formation of ...... which begins to develop into ...... The ...... divides ...... to give rise to a ball of cells. The cells then begin to form ...... that develop into different ...... and organs of the body. This ...... structure is termed an ...... (A) gamet, zygote, gamet, repeatedly, groups, tissues, developing, zygote (B) zygote, embryo, zygote, quickly, groups, strings, developing, embryo (C) zygote, embryo, zygote, quickly, collections, tissues, developing, embryo (D) zygote, embryo, zygote, repeatedly, groups, tissues, developing, embryo
AMITY INSTITUTE FOR COMPETITIVE EXAMINATIONS : Ph. : 24336143/44, 25573111/2/3/4, 0120-2431839/42 [8] 26. Match the statements of Column-I and Column-II and tick-mark() the correct matching, given as one of the four alternatives A, B, C and D. Column I Column II (a) Secretes insulin which controls diabetes (i) pituitary gland (b) Secretes hormones which maintain the (ii) thyroid gland correct salt balance in the blood (c) Secretes growth hormones, necessary (iii) pancreas for normal growth of a person (d) Secretes hormones which treat goitre (iv) testes and ovaries (e) Secrete sex hormones (v) adrenal gland (A) (a) - iii, (b) - v, (c) - i, (d) - ii, (e) - iv (B) (a) - iii, (b) - v, (c) - ii, (d) - i, (e) - iv (C) (a) - v, (b) - iii, (c) - i, (d) - ii, (e) - iv (D) (a) - v, (b) - iii, (c) - ii, (d) - i, (e) - iv 27. Which one of the following statements is correct ? (A) Unit of weight is kilogram (B) Force only changes the motion of a body (C) Force of attraction between two bodies, due to their masses, is called gravitational force (D) Pressure exerted on a surface depends only on the force exerted on it 28. In which one of the following cases, atmospheric pressure has no role to play? (A) When you are sipping cold drink, using a straw (B) When doctor uses a dropper to take out medicine from a small bottle (C) When doctor injects medicine into the body (D) When lizard moves on the ceiling of a room 29. The unit of loudness of sound is decibel (dB). The loudness of normal conversation is about (A) 30 dB (B) 60 dB (C) 40 dB (D) 80 dB
AMITY INSTITUTE FOR COMPETITIVE EXAMINATIONS : Ph. : 24336143/44, 25573111/2/3/4, 0120-2431839/42 [9] 30. Visualise a block on the surface of an inclined plane, as shown. Frictional force will act on the block in the downward direction, when the block is (A) just balanced (B) moving downwards (C) pulled upwards (D) in all the above cases 31. Which one of the following statements is not correct ? (A) Static friction > sliding friction > rolling friction (B) Satellites experience no friction while moving through vacuum (C) Good quality lubricants can reduce friction to zero (D) Friction is necessary evil 32. A person, born deaf, (A) can become a good actor (B) can become a musician, when properly trained (C) can become a good orator (D) will be a dumb person 33. Match the statements of Column-I and Column-II and tick-mark() the correct matching, given as one of the four alternatives A, B, C and D. Column I Column II (a) Frequency (i) frequency (b) Loudness (ii) loudness (c)Sound (iii)sound (d) Vibration (iv) hertz (e) Pitch (v) medium (f) Decibel (vi) amplitude (A) (a) - iv, (b) - vi, (c) - v, (d) - i, (e) - iii, (f) - ii (B) (a) - iv, (b) - vi, (c) - v, (d) - iii, (e) - i, (f) - ii (C) (a) - v, (b) - vi, (c) - iv, (d) - iii, (e) - i, (f) - ii (D) (a) - v, (b) - vi, (c) - iv, (d) - i, (e) - iii, (f) - ii
AMITY INSTITUTE FOR COMPETITIVE EXAMINATIONS : Ph. : 24336143/44, 25573111/2/3/4, 0120-2431839/42 [10] 34. Which one of the following statements is not correct ? (A) To detect weak current in a circuit, an LED may be used (B) LED stands for ‘light emitting device’ (C) An electric current through a conducting solution causes chemical reactions (D) In electroplating, metal is transferred from one electrode to the other 35. Vinegar, Tungsten, Honey, Silk, Ceramic, Mercury, Wool, Earth Dry paper, Air on rainy day, Cooking oil, Cotton, Carbon, Wax, Tap water, Glass, Human body, Plastics, Rubber, Steel In the above list of materials, the number of good conductor of electricity and insulators/poor conductors of electricity are, respectively, (A) 9 and 11 (B) 8 and 12 (C) 10 and 10 (D) 11 and 9 36. Which one of the following is an incorrect statement ? (A) Lightning is due to heating effect of flow of charges (B) Electric current is due to motion of charges (C) An earth-connected body may be positively charged (D) During lightning and thunderstorm, no open place is safe 37. A glass rod is rubbed with silken cloth and then both are separated. Which one of the following statements is correct ? (A) Both glass rod and silken cloth attract small pieces of paper. This shows that both have similar charge (B) Glass rod would be positively charged and silken cloth would be negatively charged (C) Glass rod would be negatively charged and silken cloth would be positively charged (D) Magnitude of charge on glass rod would be more than that on the silken cloth 38. Which one of the following natural disaster phenomenon is most damaging ? (A) Lightning (B) Earthquake (C) Thunderstorm (D) All are equally damaging
AMITY INSTITUTE FOR COMPETITIVE EXAMINATIONS : Ph. : 24336143/44, 25573111/2/3/4, 0120-2431839/42 [11] 39. Which one of the following statements is not correct ? (A) Blind point lies at the junction of the optic nerve and the retina of the eye (B) At blind point, there are no sensory nerves (C) Cornea is that part of the eye which gives it its distinctive colour (e.g. blue or green eyes) (D) Cone cells in eye sense colour of the incident light 40. Which one of the following is not rich in vitamin A, considered good for eyes? (A) Raw carrots (B) Papaya (C) Cod liver oil (D) Guavas
AMITY INSTITUTE FOR COMPETITIVE EXAMINATIONS : Ph. : 24336143/44, 25573111/2/3/4, 0120-2431839/42 [12] ANSWERS CLASS VIII SCIENCE (2015)
1B 2C 3B 4A 5A 6D 7C 8B 9C 10B 11 D 12 B 13 B 14 A 15 D 16 D 17 C 18 D 19 B 20 A 21 D 22 D 23 B 24 C 25 D 26 A 27 C 28 C 29 B 30 C 31 C 32 D 33 B 34 B 35 A 36 C 37 B 38 B 39 C 40 D
AMITY INSTITUTE FOR COMPETITIVE EXAMINATIONS : Ph. : 24336143/44, 25573111/2/3/4, 0120-2431839/42 [13]