64.  The study of Drugs and their action is known as
A. Pharmacy
B. Palaeozoology
C.Pharmacology
D.Palaeontology

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65.  Root pressure is measured by
A. Barometer
B. Atmometer
C. Manometer
D. Auxanometer

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66.  Blood groups were discovered by
A. Landsteiner
B. William Harvey
C. Weismann
D. Morgan

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67.  A tachometer is a device used to measure
A. gravitational pull
B. speed of rotation
C. surface tension
D. dispersive power

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68.  Which scientist discovered the radioactive element Radium ?
A. Marie Curie
B. Isaac Newton
C. Albert Einstein
D. Benjamin Franklin

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69.  Crescograph was invented by
A. S.N. Bose
B. P.C. Roy
C. J.C. Bose
D. P.C. Mahalanobis

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70.  Name the branch of Zoology that deals with the scientific study of animal behaviour.
A. Ecology
B. Physiology
C. Ethology
D. Anatomy

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