Tooth decay is caused by?
Tooth decay is caused by?
A. Salt
B. Sugar
C. Calcium
D. Formalin
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In which layer of atmosphere does commercial aircrafts usually fly?A. Stratosphere
B. Troposphere
C. Mesosphere
D. ThermosphereWhich of the following science is considered “mother of all sciences”?
Which of the following science is considered “mother of all sciences”?A. Biology
B. Mathematics
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D. ChemistryShort-sight defect could be corrected by a _____________ lens?
Short-sight defect could be corrected by a _____________ lens?
A. concave lens
B. convex lens
C. converging lens
D. none of these
ALSO CHECK: Long-sight defect could be corrected by using __________ lens?Which of the following is good conductor of heat but bad conduct of electricity?
Which of the following is good conductor of heat but bad conduct of electricity?A. Aluminium
B. Titanium
C. Abestos
D. MicaInstrument of rain gauge is _________?
Instrument of rain gauge is _________?A. Drosometer
B. Ombrometer
C. Micrometer
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Which body part gets older first?A. Face
B. Feet
C. Hands
D. None of these