18. Lactometer is a type of Hydrometer which is used to measure the specific gravity of :
a) Honey
b) Water
c) Milk
d) olive oil
e) None of these
19. Cusec is a unit of :
a) Area
b) Time
c) Distance
d) mass
e) None of these
20. The deepest place on earth is :
a) Trench
b) Mariana Trench
C) Mangrove
d) Groove
e) None of these
21. Twinkling of stars is caused by :
a) Reflection of light
b) Polarization of light
c) refraction of light
d) Interference of light
e) None of these
22. Magnifying power of a simple microscope can be increased by :
a) increasing focal length of the lens
b) Decreasing focal length of the lens
c) Lens of large aperture
d) lens of short aperture
e) None of these
23. Bronze medal is made up of metal :
a) Copper , Zinc
b) Copper , Nickle
c) Copper , Tin
d) Sopper , Silver
24. One of the countries through which equator passes is :
a) Kenya
B) Pakistan
c) Malaysia
d) Malta
e) None of these
25. A very important practical application of properties of matter is hoeing or “godi” practiced by the farmers. This property of matter is called :
a) Elasticity
b) Stress
c) Capillarity
d) Strain
e) None of these
26. It is observed that the total pressure exerted by air on the man of average siz is around 14.7 lb wt. per square inch. But the man feels quite comfortable,. It is because of :
a) An equal and opposite pressure acts from inside
b) of the height of a man
c) of gravity
d) Earth pulls the man upward
e) None of these
27) A nuclear reactor is a device used to carry out controlled nuclear reaction whereas GM counter is a device used to detect :
a) Current
b) Voltage
c) nuclear Radiation
d) power
e) None of these
28. A body can escape the gravitational pull of the earth if it is thrown up with a velocity of:
a) 25 miles per sec
b ) 60 miles per sec
c) 7 miles per sec
d) 10 miles per sec
e) None of these
29. Night vision is possible with the help of :
a) Red light
b) Violet light
c) Infrared Rays
d) Ultra violet Light
e) None of these
30. Myopia is a defect of human eye. it can be corrected by using a lens called :
a) Convex lens
b) Concave lens
c) Cylindrical lens
d) Plano convex lens
e) None of these
31. Walnuts can be broken in the hand by squeezing two together but not one. It is because of :
a) Work done
b) Power
c) Energy
d) Volume
e) None of these
32. The instrument which i specially design for recording earth quake wave is called seismograph which measure earth quake waves on a:
a) Diatonic scale
b) Fahrenheit Scale
c) Richter scale
d) Celsius Scale
e) None of these
33. The planet Mercury completes one rotation around the sun is :
a) 88 days
b) 365 days
c) 98 days
d) 60 days
e) None of these
34. Fossils found in the lowest geological strata are generally most :
a) Advance
b) Complex
c) Primitive
d) Specialized
e) None of these
35. Evolution can be described as :
a) A continuing process
b) A catastrophic event in the past
c) Static
d) The attaining of an ideal type
e) None of these