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July 5th, 2014, 09:33 AM
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Join Date: Mar 2012
Re: SSLC Karnataka Board Previous Papers

Here I am sharing the last year Science Question Paper of SSLC Karnataka Board

1. “A current carrying conductor experiences a mechanical force in a magnetic field.”
The device which works on this principle is a/an
(A) electric motor (B) A.C. dynamo
(C) D.C. dynamo (D) commutator.
Ans :

2. ‘Volt’ is the unit of which of the following quantities ?
(A) Electric current and potential difference
(B) Potential difference and electromotive force
(C) Electromotive force and electrical resistance
(D) Electrical resistance and electric current.
Ans :
3. Dr. Sahana has to treat her patient who is suffering from rickets. The
electromagnetic radiation to be used for this treatment is
(A) ultraviolet radiations of high frequency
(B) infrared rays of high frequency
(C) ultraviolet radiations of low frequency
(D) infrared rays of low frequency.
Ans :
4. Identify the correct relationship among the three given below with respect to X-rays :
1 2 3
L) William Roentgen P) heating effect X) Blood circulation
M) J.W. Ritter Q) absorbed by ozone layer Y) Sterilizer
N) W. Herschel R) passes through the skin Z) Radiography
(A) L, R, Z (B) M, Q, X
(C) N, P, Y (D) M, R, X.
Ans :

5. A reverse biased p-n junction offers a high resistance, because
(A) charge carriers flow across the junction
(B) the cell used supplies direct current
(C) charge carriers flow in the same direction
(D) charge carriers are repelled away from the junction.
Ans :
6. The two major parts in total radio broadcasting system are
(A) microphone and mixer
(B) speaker and detector
(C) transmitter and receiver
(D) speaker and receiving antenna.
Ans :
7. If there is voltage fluctuation in domestic circuit, the device that you use to regulate
voltage in an electrical appliance is
(A) a transducer
(B) an oscillator
(C) a diode
(D) a detector.
Ans :

8. A cyclist while going round a curve leans towards the centre of the curve to get
necessary
(A) centrifugal force
(B) centripetal force
(C) gravitational force
(D) centrifugal reaction.
Ans :
9. The device that can be fitted to the engine of a bus to prevent the driver from driving
it with overspeed is
(A) centrifugal pump
(B) centrifuge
(C) centrifugal drying machine
(D) centrifugal governor.
Ans :
10. For a satellite orbiting the earth, centripetal force is provided by
(A) the place of launch
(B) gravitational force
(C) the size of the satellite
(D) mass of the satellite.
Ans :

11. The value of ‘g’
(A) does not depend on the mass of the object
(B) is proportional to the mass of the object
(C) does not depend on the mass of the earth
(D) does not depend upon the radius of the earth.
Ans :
12. The masses of two objects are ‘a’ and ‘b’ and the force of attraction between them is
‘F’. The distance between them is given by
(A)
G ab
F (B) F G ab
(C)
F
G ab (D)
G ab
F
Ans :
13. The factor that does not contribute for the dispersion of light in a glass prism, is
(A) the prism is transparent
(B) double refraction takes place
(C) light gets reflected by the prism
(D) white light is made of several colours.
Ans :

14. The sketch of correct arrangement of prisms for the dispersion and recombination of
colours of composite light is
(A)
(B)
(C)
(D)
Ans :
15. A student wants to get a band of distinct seven colours occupying their respective
positions using a glass prism. The device that he can select for this purpose is a
(A) Telescope
(B) Spectroscope
(C) Microscope
(D) Binocular.
Ans :
16. Doppler effect in sound is observed as a change in its
(A) pitch (B) velocity
(C) amplitude (D) speed.
Ans :

17. The ultrasound signal sent in water by sonar takes 3 seconds to return. If the
velocity of sound in water is 1•5 kms/sec, the distance travelled by the signal is
(A) 2•25 kms (B) 4•5 kms
(C) 6 kms (D) 9 kms.
Ans :
18. The red shift of galaxies show that the
(A) universe is contracting
(B) galaxies are coming towards us
(C) velocity of light changes
(D) universe is expanding.
Ans :
19. The matter that streams out of the sun’s surface in bursts like thunderstorms is
(A) granulation
(B) spicule
(C) solar flare
(D) solar prominence.
Ans :

20. The magnitudes of four stars P, Q, R and S are respectively 0, – 5, + 5 and – 10. The
brightest star among them is
(A) S (B) R
(C) Q (D) P.
Ans :
21. Machine parts in an industry are to be checked for defects. The radio-isotope used
for this purpose is
(A) Radio-Iodine
(B) Radio-Iridium
(C) Radio-Carbon
(D) Radio-Phosphorous.
Ans :
22. Which of the following has 146 neutrons ?
(A) 92 U 235
(B) 88 Ra 226
(C) 86 Rn 222
(D) 92 U 238
Ans :
83-E 10
( SPACE FOR ROUGH WORK )
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23. Tritium nucleus contains
(A) three protons
(B) one proton and two neutrons
(C) two protons and one neutron
(D) three neutrons.
Ans :
24. The light absorbing material used in a solar cell is
(A) silicon (B) phosphorous
(C) carbon (D) radium.
Ans :
25. The technique which established that the sun is made of mostly hydrogen is
(A) spectrum analysis
(B) chemical analysis
(C) scanning
(D) laser ranging.
Ans :


26. The fuel used in gobar gas plant is
(A) animal dung
(B) firewood
(C) coal
(D) charcoal.
Ans :
27. Brass, German silver and Gunmetal are the alloys of copper. Apart from copper the
other common metal in them is
(A) zinc
(B) tin
(C) iron
(D) nickel.
Ans :
28. You are required to arrange Fe, Zn and Mg in the increasing order of their reactivity.
The correct arrangement is
(A) Mg, Zn, Fe
(B) Fe, Mg, Zn
(C) Fe, Zn, Mg
(D) Zn, Mg, Fe.
Ans :
83-E 12
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29. Sodium aluminium silicate is also called
(A) washing soda
(B) silicone
(C) water glass
(D) zeolite.
Ans :
30.
C
H H
H
H
H
H
C C
Name of this structure is
(A) propyne
(B) propane
(C) cyclopropane
(D) propene.
Ans :

31. During the extraction of silicon from quartz, unchanged silica is removed by using
(A) Hydrochloric acid
(B) Hydrofluoric acid
(C) Nitric acid
(D) Sulphuric acid.
Ans :
32. The permitted level of emission of carbon monoxide of my vehicle is 3%. My vehicle is
(A) a scooter
(B) a lorry
(C) an auto-rickshaw
(D) a car.
Ans :
33. The chemical which is mixed with L.P.G. to detect the leakage of the gas is
(A) Methyl Mercaptan
(B) Benzyl Mercaptan
(C) Ethyl Mercaptan
(D) Propyl Mercaptan.
Ans :
83-E 14
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34. During the manufacture of glass, molten glass is cooled slowly to make it
(A) more brittle
(B) colourful
(C) withstand high temperature
(D) lose brittleness.
Ans :
35. The polymer that can be used as gasket of a pressure cooker is
(A) thiokol
(B) teflon
(C) nylon
(D) neoprene.
Ans :
36. Raw materials used in the manufacture of cement are
(A) clay and washing soda
(B) clay and limestone
(C) washing soda and limestone
(D) calcium silicate and clay.
Ans :

83812130 [ Turn over
37. Which of the following is a soap ?
(A) Sodium sulphate
(B) Sodium stearate
(C) Sodium chloride
(D) Sodium nitrate.
Ans :
38. Which among the following is not a method of conservation of water ?
(A) Growing trees and conserving soil
(B) Using improved method of farming
(C) Removing the forests and constructing lakes
(D) Collecting the roof water and using it.
Ans :
39. During the preparation of soap the liquid separated by distillation is
(A) sodium hydroxide
(B) oil
(C) stearic acid
(D) glycerol.



Rest of the Questions are attached in below file which is free of cost
Attached Files
File Type: pdf SSLC Karnataka Board Science Question Paper.pdf (163.1 KB, 48 views)


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