Everyday Science Mcqs 9

 

26. Which of the following control the reflex action in the body ?

a. Central nervous system

b. Motor nerves

c. Sensory nerves

d. sympathetic nervous system

27. The terminal part of vertebral column in man is called

a. Telson

b. Urostyle

c. Coccyx

d. Pygostyle

28. The life history of human malarial parasite in Anopheles was first described by

a. Grassi and his pupil

b. Sir Patrick Manson

c. Sir Ronald Ross

d. Richard Pfeiffer

29. The ” Urinary system ” of the body consists of how many organs ?

a. 2

b. 3

c. 4

d. 5

30. Haryersion canals are present in

a. Bone

b. Cartilage

c. Kidney

d. Liver

31. The gestation period of human being is

a. one month

b. five months

c. seven months

d. Nine months

32. RNA differs from DNA in containing

a. Cytocine

b. Deoxyribose

c. Ribose

d. Phosphate

33. The first heart is produced when

a. Bisuspid and tricuspid close quickly

b. Semilunar value snaps shut

c. Intraventricular pressure decreases

d. Diastole begins

34. Who discovered the blood group of man ?

a. Edward Jenner

b. Larven

c. Kari Landsteiner

d. William Harvey

35. Which of the following glands has both an endocrine and an exocrine function ?

a. Adrenal

b. Mammary

c. Pancreas

d. Thyroid

36. Radio carbon dating is used to find the age of

a. Fossils

b. Buildings

c. Rocks

d. Babies

37. Geiger Counter is an instrument

a. Determine the heart beat rate

b. To detect radioactive radiation

c. To measure intensity of visible light

d. To count the baggage of an airport

38. The instrument used in a submarine to see the object on the surface of water is

a. Periscope

b. Telescope

c. Kaleidoscope

d. Microscope

39. Three primary colours used in the colour TV are

a. Green-yellow-blue

b. Yellow-blue-red

c. Red-green-yellow

d. Green-blue-red

40. Anemometer is used to measure

a. Wind gustiness

b. Wind direction

c. Wind speed

d. Vertical variation of wind speed

41. Which of the following gives the correct indication of composition of bronze ?

a. Copper and tin

b. Iron and zinc

c. Copper and silver

d. Lead and oxygen

42. The hardest of all metals is

a. Gypsum

b. Diamond

c. Topaz

d. Corundum

43. In electrolysis , the reaction at anode is

a. Ionization

b. Polymerization

c. Reduction

d. Oxidation

44. Carbon dioxide is a good fire extinguisher because

a. It is a combustible gas

b. it excludes air from the flames

c. It lowers the killing temperature

d. It is plentiful

45. If a body is moved from equator to pole on the mean sea level , then its weight

a. Decrease always

b. Increases always

c. Constant

d. None of above

46. To an astronaut in the spacecraft , the sky appears to b

a. Blue

b. White

c. Dark

d. Red

47. When a ship enters a sea from a river , Its portion under water will

a. Increase

b. Decrease

c. Show no change

d. Increase and decrease alliteratively

48. Kilowatt is the unit of

a. Voltage

b. Power

c. Resistance

d. Current

49. The sun derives its energy from

a. Nuclear fission reactions

b. Nuclear fusion reactions

c. Oxidation of helium

d. Fission of noble metals

50. Which of the following is useful in the chemistry of photography ?

a. Silver bromide

b. Aluminum hydroxide

c. Sodium chloride

d. Potassium nitrate