Basic Science GK Quiz for Competitive Exams
Which of the following acids are formed during the formation of curd from milk?
(A) Acetic acid
(B) Ascorbic acid
(C) Citric acid
(D) Lactic acid
Correct Answer : D
Explanation :
As an end product, lactic acid is produced which makes the milk thicker and finally converts it into curd.
Iron is obtained by which of the following minerals?
(A) Limestone
(B) Pitch Bland
(C) Monozite sand
(D) Hematite
Correct Answer : D
Explanation :
The iron minerals that are at present used as ores are hematite, magnetite, limonite, and siderite.
Which of the following is not a natural polymer?
(A) Wool
(B) Leather
(C) Nylon
(D) Silk
Correct Answer : C
Explanation :
The correct answer is the Glyptal. The term "natural polymers" refers to compounds that are produced naturally. Glyptal is a synthetic polymer and does not exist in nature. The polymer substance formed from glycerol and phthalic acid is known commercially as glyptal.
The first Indian Satellite Aryabhatta was launched in
(A) 1974
(B) 1975
(C) 1976
(D) 1977
Correct Answer : B
Explanation :
The Aryabhata spacecraft, named after the famous Indian astronomer, was India's first satellite; it was completely designed and fabricated in India and launched by a Soviet Kosmos-3M rocket from Kapustin Yar on April 19, 1975.
Which of the following metals is used in accumulator batteries?
(A) Copper
(B) Lead
(C) Aluminum
(D) Zinc
Correct Answer : B
Explanation :
Thus, a metal used in storage batteries is Lead.
The instrument used to examine a person’s digestive tract is called_____.
(A) Oscilloscope
(B) Microscope
(C) Endoscope
(D) Radiograph
Correct Answer : C
Explanation :
A flexible tube called an endoscope is used to view different parts of the digestive tract. When passed through the mouth (as shown on the left), an endoscope can be used to examine the esophagus, stomach, and some of the small intestine.
Reading of a barometer going down is an indication of
(A) rainfall
(B) snow
(C) storm
(D) intense heat
Correct Answer : A
Explanation :
Low pressure – when reading of the barometer is lower than inHg, this is considered as low air pressure, which is associated with warm air and rainstorm. So, clearly, a falling barometer indicates bad weather is ahead.
The science that deals with the relationship of various organisms with their environment is known as?
(A) anthropology
(B) economics
(C) ecology
(D) geology
Correct Answer : C
Explanation :
Ecology is the study of the relationships between living organisms, including humans and their physical environment. The German scientist Earnst Haeckel was the first to use this word in 1869.
Which of the following has a very strong aroma of the fruit?
(A) Ethyl acetate
(B) Methanol
(C) Methyl chloride
(D) Methanoic acid
Correct Answer : A
Explanation :
This colorless liquid has a characteristic sweet smell (similar to pear drops) and is used in glues, nail polish removers, and in the decaffeination process of tea and coffee. Ethyl acetate is the ester of ethanol and acetic acid; it is manufactured on a large scale for use as a solvent.
World Environmental Day is celebrated every year on:
(A) 5 May
(B) 5 June
(C) 5 July
(D) 18 July
Correct Answer : B
Explanation :
World Environment Day is celebrated on June 5 every year to remind people to save nature and the earth by stopping their non-environmentally friendly activities. Let's know more about this day, its history, significance, and theme.
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Rajesh Bhatia
A Writer, Teacher and GK Expert. I am an M.A. & M.Ed. in English Literature and Political Science. I am highly keen and passionate about reading Indian History. Also, I like to mentor students about how to prepare for a competitive examination. Share your concerns with me by comment box. Also, you can ask anything at linkedin.com/in/rajesh-bhatia-7395a015b/.
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