91) What is the main component of bones and teeth?
(A) Calcium carbonate
(B) Calcium phosphate
(C) Potassium sulphate
(D)
92) What is the main constituent of hemoglobin?
(A) Iron
(B) Protein
(C) Carbohydrates
(D)
93) When sun appears vertically overhead at moon at equator, the time is called:
(A) Polinox
(B) Equikox
(C) Equinox
(D) None of these
94) The blood clotting factor in human body is produced by:
(A) Kidney
(B) Spleen
(C) Liver
(D) Pancreas
95) Chemically finger nails are made up of:
(A) Protein
(B) Carbohydrates
(C) Potassium
(D) None of these
96) What connects the small brain with the spinal cord?
(A) Cerebellum
(B) Medulla Oblongata
(C) Thalamus
(D) Cerebrum
97) Which instrument is used to measure minute electrical currents?
(A) Seismograph
(B) Polygraph
(C) Manometer
(D) Galvanometer
98) Which device is used to measure specific gravity of a liquid?
(A) Barometer
(B) Ammeter
(C) Manometer
(D) Hydrometer
99) Which device is used to measure humidity?
(A) Tachometer
(B) Hydrometer
(C) Hygrometer
(D) Galvanometer
100) What splits light into its spectrum?
(A) Ionometer
(B) Spectrometer
(C) Manometer
(D) Stereoscope