GK Science

STS IBA Test MCQS Pdf Everyday Science MCQS questions and answers online practice test free. GK about everyday science solved.


a) The variation in the blood flow can be heard with an instrument called a stethoscope.

b) The place in the retina where the light-sensitive cells are interrupted by the presence of the optic nerve head is known as the blind spot.

c) The study of human population is called demography.

d) Human beings belong to the species called Homo sapiens.

e) The defect of the eye due to which nearly located objects are not clearly visible is called myopia or nearsightedness.

f) About 60% of the human body consists of water.

g) All of the oxygen that you breathe has been produced by the splitting of water during photosynthesis.

h) The important ore of Chromium is chromite.

i) Sulfuric acid was discovered by Jabir ibn Hayyan (Geber).

j) The measurement of rainfall is made by an instrument known as a rain gauge or pluviometer.



a) The alloy which consists of copper and tin is called bronze.

b) The device used to measure radioactivity is a Geiger counter.

c) The organ in the human body which is responsible for the digestion of protein only is the stomach.

d) The instrument used to measure very high temperature is a pyrometer.

e) The scientist who designed the first internal combustion engine used to burn low-grade fuel is Rudolf Diesel.

f) The scientist who asserted that the Earth is a huge magnet is William Gilbert.

g) The metal known as quicksilver is mercury.

h) The device which converts chemical energy into electrical energy is a battery.

i) The first person to orbit the Earth in space was Yuri Gagarin.

j) The scientist who discovered water is not attributed to a single individual, as the discovery of water predates recorded history.

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