71.  IVF (In Vitro Fertilization) Technique was first devised by
A. Patrick Steptoe and Robert Edwards
B. Dr. Henry Dixon
C. Robertson
D. Dr. Martin Cooper

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72.  An instrument used to measure the density of milk is
A. Glactometer
B. Lactometer
C. Calciometer
D. Polarirneter

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73.  Who invented aeroplane ?
A. Edison
B. Stevenson
C. Hoffman
D. Wright Brothers

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74.  Telephone was invented by
A. Alexander Graham Bell
B. Baird
C. Stevenson
D. Newton

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