Tuesday, December 20, 2011

BASIC SCIENCE SOLVED MCQS


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

36. What is the only source of new alleles?

a) Crossing over
b) independent assortment
c) Mutation
d) Fertilization
e) None of these

37. Polygenic characteristic are controlled by :

a) Dominant genes
b) Recessive genes
c) Multiple genes
d) Mutated genes
e) None of these

38. Which of the following , lists the four stages of food processing in order?

a) ingestion , digestion , absorption , elimination
b) digestion , ingestion , absorption , elimination
c) ingestion , absorption , elimination , digestion
d) absorption , digestion , ingestion , elimination
e) None of these

39. In humans , most nutrient molecules are absorbed by the :

a) small intestine
b) stomach
c) liver
d) large intestine
e) None of these

40. The energy needed to fuel essential body processes is called :

a) Essential nutrient level
b) Basal metabolism
c) None of these
d) recommended daily allowance
e) Optimum energy intake

41. Which of the following is an organic molecule needed by the body in small amounts?

a) Protein
b) Vitamin C
c) Zinc
d) Monosaccharide
e) None of these

42. Inhaled air passes through which of the following in the last?

a) Bronchiole
b) Larynx
c) Pharynx
d) Trachea
e) None of these

43. Which of the following is a form of sexual reproduction?

a) Hermaphroditism
B) Fission
c) Fragmentation
d) Budding
e) None of these

44. Cobalt is a material which is :

a) Strongly attracted by a magnet
B) Not attracted by a magnet
c) not a magnet
d) Weakly attracted by a magnet
e) None of these

45. Laughing gas has chemical composition of the following two elements which are :

a) Nitrogen + Hydrogen
b) Nitrogen + Carbon
c) Nitrogen + oxygen
d) Oxygen + Carbon
e) None of these

46. Hepatitis A is transmitted to different individuals by :

a) Water
b) Sneezing
c) Spit
d) Foeces
e) None of these

47. The unit that coordinates different devices of the computer system is :

a) ALU
b)Register
c) Control unit
d) Logical instruction
e) None of these

48. The most abundant element present is in the human body is :

a) Nitrogen
b) Oxygen
c) Carbon
d) Hydrogen
e) None of these

49. Cancer can be treated by :

a) Antibiotics and vaccines
b) Radiotherapy and antibodies
c) Chemotherapy and radiotherapy
d) Antibodies and chemotherapy
e) None of these

50. Animals obtain carbon dioxide mainly from :

a) Starch
b) Sucrose
c) Glucose
d) Glycogen
e) None of these

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