P-201, MIDC Indl. Area, Saravali, Boisar ISO 9001-2008 Certified

SCIENCE TALENT SEARCH EXAMINATION

CLASS – VIII SAMPLE PAPER

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100 Questions

Time Allowed : 120 Minutes

Do not open this question paper until the signal is given.

Please check the CLASS printed on the cover page and the inside is same when you open the booklet.

General Instructions: 1) All questions are compulsory and

carry equal marks.

2) There is no negative marking.

3) There is only one correct answer

hence write one choice only.

4) Please avoid cutting/overwriting etc.

5) Return the answer sheet to the

invigilator at the end of the

examination.

6) The question paper can be retained by

the student.

PHYSICS [30]

01] Which colour has the least wave length? a] Red b] Violet c] White d] Green

02] The unit of a power of a lens is a] candela b]dioptre c]watt d] ampere

03] The watery fluid that is present in the space in front of the eye lens is

a] Aqueous humor b] Vitreous humor c] ciliary muscles d]tears

04] Induction is a]the process of magnetizing substance by keeping them in an

external magnetic field. b] the process of heating a magnet beyond its curie

temperature. c] damaging a magnet so that it loses its magnetic properties. d] breaking a magnet into two pieces to develop new dipoles

05] Cathode is a] positively charged electrode b] negatively charged electrode c] a negatively charged ion formed in the electrolyte d] a positively charged ion formed in the electrolyte

06] As the resistance increases a] current flowing through it increases b] heat produced due to energy loss decreases c] heat produced due to energy loss increases d] conductance increases

07] Which of the following is a symbol of a cell.

a] b] c] d] 08] When a bulb is connected to 30 v battery, 0.5 A current flows

through it. Calculate the resistance of the bulb. a] 60 Ω b] 15 Ω c] 150 Ω d] 30 Ω 09] Electromagnetic induction was discovered by a] Isaac Newton b] Michael Faraday

c]Hans Oersted d] James Maxwell

10] Name the closest star to our solar system other than the sun. a] Sirus b] Swati c] Ashwini d]Poornima

11] Insulators have a] high resistance b] low resistance c] high conductance d] both a and b

12] Which of the following are good conductors a]metals b] liquids c] gases d] none

13] In a voltaic cell, hydrogen ions move towards a] zinc electrode b] copper electrode c] both the electrodes d] they do not move towards electrode

14] Virtual image a] is always formed by concave lens b] can always be captured on screen c] cannot be caught on a screen d] is always diminished

15] Sunlight reaches us in a] 8 seconds b] 8 minutes c] 8 hours d] 8 days

16] Halley is the name of a/an a] comet b] asteroid c] satellite of Jupiter d] meteorite

17] GSLV stands for a] German Satellite Launching Vehicle b] Global Satellite Locus Verification System c] Geostationary Satellite Launch Vehicle d] Geostationary Satellite Locus Vehicle

18] A direct current producing electric generator uses a] two rings b] split rings c] four half rings d] four rings

19] How many 1.5 V cells would you have to connect in series to obtain a voltage of 9V?

a] 9 b] 5 c] 6 d] 15

20] When you rub a glass rod with a piece of silk a] glass rod gains electrons b] glass rod acquires positive charge c] glass rod becomes semi conductor d] glass rod loses electrons

21] The refractive index of kerosene is 1.42. Calculate the speed of light in it.

a] 426,000km/s b] 300 000 km/s c] 211 268 km/s d] 279988 km/s

22] The electrolyte in dry cell is a] copper sulphate b]zinc sulphate c] sulpuric acid d] ammonium chloride

23] Stars produce energy by a] burning coal b] nuclear reactions c] chemical reactions d]both b and c 24] Which of the following is a non-magnetic substance a] iron b] cobalt c] nickel d] brass

25] The dispersive power of a prism depends on a] material of the prism b] angle of the prism c] colour of the prism d] size of the prism

26] The transparent membrane over the eye ball is called a] iris b] cornea c] pupil d] retina 27] Refractive index is equal to

a] b]

c] d]

apparent depth real depth

real depth apparent depth

speed of light in the medium speed of light in vacuum

real depth speed of light in vacuum

28] Hypermetropia is a] an eye defect in which image of an object is formed behind

retina b] an eye defect in which image of an object is formed before

retina c] a lens defect in which image is not formed sharply on a

single point d] lens defect in which a parallel beam of light does not exactly pass through the focus of the lens.

29] Current is the flow of a] matter b] electrons c] protons d] charge

30] Which of the following is an insulator? a] Mica b] Lithium c] Aluminium d] Copper

CHEMISTRY 31] The electronic configuration of oxygen is a] 2,7 b] 2,6 c] 2,4,2 d] 4, 4

32] 4 Fe+3 O 2 → 2 Fe 2 O 3 . This reaction is a] moderate b]very fast c] very slow d] instantaneous

33] Which of the following is a carbonate ore of copper? a] cuprite b] pyrite c]copper glance d] malachite

34] Methane is insoluble in a] ether b] water c] alcohol d] CCl 4

35] Which of the following is a fossil fuel? a] petroleum b] wood c]cow dung d]dry leaves

36] Fire is extinguished by a] removing all combustible substances b] cutting off supply of air c] cooling the burning substances d] all the above 37] The device which does not work on solar energy a] watch b] water heater c] cooker d] refrigerator 38] Methane reacts with oxygen to form C H 4 + 2O 2 . a] CO 2 + 2 H2 O b] CO +H 2 O c] H 2 +O 2 +C d]CO 2 + H 2

39] Depletion of ozone layer takes place due to a] methyl alcohol b] benzene c] carbon tetrachloride d] chlorofluorocarbon

40] Percentage of nitrogen in air is a] 21% b] 78% c]55 % d] 60% 41] Aneroid barometer means a] without liquid b] without solid c] without gas d] without liquid and gas

42] Biogas is a mixture of a] methane + CO2 b] methane + CO c] ethane + CO2 d] ethane + CO

43] Fountains of hot water, called geysers are utilized to obtain a] hydal energy b] solar energy c] geothermal energy d] chemical energy

44] CO poisoning is most likely to occur at a/ an a] open place with coal burning b] room with burning LPG gas c] closed room with coal burning d] charcoal burning in open space

45] Maximum number of electrons, the third shell can accommodate is a] 32 b] 2 c] 8 d] 18

46] Sodium ion (Na +) has _______ number of electrons. a] 10 b] 12 c] 11 d] 13

47] The noble gases from the following are a] O 2 , N 2 , H 2 b] Cl, F, Br c] He, Ne, Ar d] Na, K, Ca

48] During the process of photosynthesis, the ___ acts as catalyst. a] sunlight b] chlorophyll c] CO 2 d] glucose

49] The gas which smells like rotten egg is a] H 2 S b] CO 2 C] NO 2 d] SO 2

50] Boiling point of water a] 80 0 C b] 4 0 C c] 100 0 C d] 0 0 C

51] A liquid with soluble impurities is purified by a] freezing b] cooling c] filtering d] boiling

52] Reaction in which energy is produced a] exothermic b] endothermic c] reversible d] irreversible

53] Pb (NO 3 ) 2 , which is colourless, reacts with H 2 S to give a precipitate of PbS, whose colour is

a] brown b] white c] black d] green

54] Which of the following is an example of rapid combustion ? a] candle b] cracker c] white phosphorous d] coal

55] Metal which does not react with HCl is a] Ag b] Mg c] Al d] Fe

56] At sea level, atmospheric pressure is equal to the weight of mass acting on every square centimeter.

a] 1 gm b] 10kg c] 1kg d] 10 gm

57] The process that would be impossible without oxygen is a] respiration b] combustion c] oxidation d] all of these

58] Barometer is a thin glass tube containing a] mercury b] lead c] tin d] tungsten

59] The layer of atmosphere nearest to earth’s surface is a] stratosphere b] troposphere c] ionosphere d] ozone layer

60] Rain water containing ______ is called acid rain. a] H 2 S O 4 b] HNO 3 c] HCl d] Both a and b

BIOLOGY [30]

61] The protein that contain all the essential amino acids is a] egg protein b] metal protein c] soyabean d]milk

62] The structure found only in animal cells , which regulate cell division is

a] chromosomes b] chromatin c] centrosome d] spindle fibrils

63] The fungus which gave one of the greatest drugs to the world of medicine is

a] Penicillium notatum b] Collectorichum falcatum c] Ustilago maydis d] Altermaria solani

64] Litmus is obtained from a] algae b] fungi c] lichen d] virus

65] Cell responding for the nitrogen fixation in blue green algae is a] zygospore b] zoospore c] heterocyst d] akinete

66]The study of algae is known as a] mycology b] cytology c] phychology d] bacteriology

67] Example of colonial algae is a] volvox b] pandorina c] endorina d] all

68] Holozoic protozoans are identified by the presence of a] contractile vacuole b] food vaculole c] two nuclei d] single nucleus

69] Which of the following is a viral disease? a] Wilt of cotton b] Wilt of sugarcane c] Spotted wilt of tamato d] Wilt of redgram

70] Destruction of immune system is the symptom of a] rabies b] polio c] AIDS d] typhoid 71] Select the air borne disease from the following : a] Tuberculosis b] Diptheria c] Pneumonia d] all 72] Vaccine is not available for a] Polio b] Tetanus c] Sugar tuberculosis d] common cold

73] Suicide bags are a] Lysosomes b] vacuoles c] mitochondria d] golsi apparatus

74] DNA stands for a] Dioxicribo Nucleic Acid b] Digestive Nucleic Acid c] Deoxyribo Nucleic Acid d] Deoxy Nucleic Acid

75] Removal of top soil by wind and water is called a] conservation b] binding c] erosion d] weeding

76] Breeding, development and growth of fish is a] pisciculture b] captured fisheries c] cultural fisheries d] pond fisheries

77] The structural and functional unit of life is a] organelles b] tissues c] cells d] organs

78] Nucleus is concerned with a] respiration b] secretion c] control of cellular activities d] protein synthesis

79] Lysosomes are a] excretory centres b] digestive centres c] respiratory centres d] energy centres

80] The pigment present in the photosynthetic bacteria is a] chlorophyll b] bacteriochlorophyll c] carotene d] xanthophylls

81] Bread mould is common name of a] Batrachoperum b] Rhizopus c] Agraicus d] Fusarium

82] Pseudopodia in amoeba are important for a] locomotion b] feeding c] both a and b d] none of these

83] Any chemical which causes loss of sensation is a] sedative b] analgesic c] anesthetic d] stimulant

84] The edible fungus is a] mould b] yeast c] mushroom d] toad stools

85] Cyanabacteria is also known as a] green algae b] brown algae c] red algae d] blue green algae

86] Chewing of tobacco may cause a]ulcer b] diabetes c] oral cancer d] tuberculosis

87] The worst animal pests are a] insects b] rats c] bacteria d] fungi

88] Gundhi bug is a small insect that attacks a] wheat b] sorghum c] cotton d] paddy

89] The soil that requires less frequency irrigation is a] sandy soil b] alluvial soil c] loamy soil d] clayey soil

90] Zinc phosphide is commonly used as a]rodenticide b] insecticide c] fungicide d] pesticide

GENERAL KNOWLEDGE 91] Who is the author of the book ‘as you like it.’ a] Jaidev b] Kalidas c]Willam Shakespeare d] Lewis Carroll

92] In the world of music, Zakir Hussain has distinguished himself in

a] Sarangi b] Sarod c] Tabla d] Flute

93] The deficiency of which vitamin causes sterility? a] E b] D c] C d]B

94] Arjuna Awards are associated with a] Journalism b] Films c] Sports d] Literature

95] What is the currency of Yogoslavia? a]Peseta b]Dinar c] Dollar d]Yen

96]The acid used in vinegar is a] Citric acid b] Tartaric acid c] Lactic acid d] Acetic acid

97] Paris is the headquarter of which of the following U.N. Organisations?

a] ILO b] FAO c] UNESCO d] WHO

98] If a coolie is a person who carries goods, what kind of creature is a ‘collie’?

a] A breed of hen b] A breed of dog c] A breed of buffalo c] A breed of pig

99] Limba Ram represented India in which sport? a] Archery b] Polo c] Golf d] Hockey

100] What is popularly called ‘the queen of spices’? a]clove b]mace c] cardamom d]cinnamon