scientist, discoveries & inventions MCQ section 3 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general awareness mcq - 4 EXERCISES
The following question based on scientist, discoveries & inventions topic of general awareness mcq
(a) Synthesis of Nitrogenous
(b) None of the above
(c) Synthesis of Protein
(d) Synthesis of Gene
The correct answers to the above question in:
Answer: (c)
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Read more scientist discoveries and inventions Based General Awareness Questions and Answers
Question : 1
The fourth dimension in Physics was introduced by
a) Galileo
b) Neil Bohr
c) Newton
d) Einstein
Answer »Answer: (d)
Question : 2
Who is not a Nobel Prize winner among the following scientists?
a) S. Chandrashekhar
b) Jagdish Chandra Bose
c) Har Govind Khurana
d) C.V. Raman
Answer »Answer: (b)
Question : 3
Who invented Portland Cement?
a) Percy L. Spencer
b) Leonardo da Vinci
c) Joseph Aspdin
d) Denis Gason
Answer »Answer: (c)
Joseph Aspdin, a British bricklayer from Leeds, is considered to be the originator of Portland cement. A process for the manufacture of Portland cement was patented in 1824.
This cement was an artificial cement similar in properties to the material known as "Roman cement.” Aspdin's process was similar to a process patented in 1822 and used since 1811 by James Frost who called his cement "British Cement".
Question : 4
Arboriculture is the study of:
a) Art of growing crops
b) Cultivation of trees and vegetables
c) Science of plant life
d) Art of garden cultivation
Answer »Answer: (b)
Arboriculture is the cultivation, management, and study of individual trees, shrubs, vines, vegetables and other perennial woody plants.
It is primarily focused on individual woody plants and trees maintained for permanent landscape and amenity purposes, usually in gardens, parks or other populated settings, by arborists, for the enjoyment, protection, and benefit of human beings.
It falls under the general umbrella of horticulture.
Question : 5
Which apparatus is used to measure the intensity of light?
a) Altimeter
b) Lux meter
c) Anemometer
d) Calorimeter
Answer »Answer: (b)
Lux meters, also known as light meters, measure the intensity of light as perceived by the human eye with the help of photo detectors.The lux is the SI unit of illuminance and luminous emittance, measuring luminous flux per unit area. In photometry, it is used as a measure of the intensity, as perceived by the human eye, of light that hits or passes through a surface.
Question : 6
Which of the following statement is false?
a) None of these
b) Polystyrene was discovered in 1839 by Edward Simon
c) It is not biodegradable
d) It is used for making plastics and CD cases
Answer »Answer: (a)
Polystyrene is a synthetic aromatic polymer made from monomer styrene. It is non-biodegradable, i.e., it cannot be decomposed by bacteria or other living organisms.
It was discovered in 1839 by Eduard Simon. Polystyrene is one of the most widely used plastics used in protective packaging (CD and DVD cases), containers, lids, bottles, trays, disposable cutlery.
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