Top 50 General Science and Technology GK Question Answers
By Vikash Suyal | Science | May 21, 2018

General Science and Technology Questions for Competitive Exam
- Tamiflue is a frontline drug against: --- Bird flu
- Who invented optical fibre ? ---Narinder Kapany (Germany)
- The concept of ‘survival of the fittest’ was first propounded by : --- Darwin
- Hydrogen spectrum was first explained by :--- Niels Bohr
- ‘Shortsightedness’ (myopia) in human eye was corrected by using proper: --- Concave lens
- Impure camphor is purified by : --- Sublimation
- Aluminium is purified by :--- Electrolysis
- The body is protected against drying, absorbing and bacterial invasion by the : ---Epithelium
- The artificial kidney operates on the principle of : --- Dialysis
- Encephalitis occurs when : --- The meanings of the brain become inflamed
- Artificial rain is produced by seeding the clouds with : ---Silver lodide
- The Speed of Neutrons in a nuclear reactor is suppressed by : ---Heavy Water Graphite Beryllium Oxide
- Astigmatism is a defect of vision which can be rectified by using : ---Sphero-cylindrical lenses
- Bleeding of gums is caused by the deficiency of : ---Vitamin C
- A fountain –pen functions on the principle of : ---Surface Tension(Capillary action )
- Which vitamin is essential for the coagulation of blood? ---Vitamin K
- The power of a lens is -2D .What is its focal length ? ---0.5 m
- The number of maximum different electrical combinations possible with three equal resistances: ---Four
- The primary component of natural gas is : ---Methane
- Who won the Noble Prize for his work on Photoelectric effect ? ---Albert Einstein
- Law of heredity was put forward by : ---Mendel
- A device used for converting A.C. into D.C. is called : ---Rectifier
- Which vitamin can be synthesized in Liver : ---Vitamin K
- Which is widly used in plastic industry for manufacturing Bakelite ? --- Phenol
- In a reachargeable cell what kind of energy is stored with in the cell ? ---Chemical Energy
- The carbon dating method is used for determining the age of : ---Fossils
- The hottest planet in the solar system is : ---Venus
- Ripe grapes contain : ---Glucose
- Polythene is the polymer of : ---Aniline
- Rayon is made from : ---Cellulose
- The mass of a body is different from its weight because:---Mass is a measure of the quantity of matter in the body while weight is the force with which body is attracted by the earth
- A horse pulling a cart moves forward due to force exerted by : --- the ground on the horse’s feet
- In a barometer liquid is preffered over water because : --- Mercury has high density and low vapour pressure
- Soap bubbles show multiple colours when viewed in white light because :--- The interference of the reflected light from the two surfaces of the soap film
- Who got Nobel Prize in 1983 on his outstanding discovery of ‘jumping genes’ ? ---Barbara McClinton
- What does taxonomy deal with ? ---It deal with inditification nomenclature and classificationof all living organism
- Lichen is considered to be a symbiotic association of two living orgarnisms are involoved
- in it ? ---Algae and fungi
- Who coined the term ‘gene’ for the factors controlling heredity ? ---W.Johannsen
- Carborundum is a compound of : ---Si
- A positron is an elementary particle having : ---Mass equal to that of an electron and charge equal and opposite to that of an electron
- Hydrogen bomb is based on the principle of : ---Uncontrolled fusion reaction
- A metal brick, thrown into deep take, sink sdeeper and .How does the buoyant force acting on it change ? ---It does not change but remains constant
- How does an astronaut on a space walk change his direction ? ---By using a rocket
- The term ‘RAM’ STANDS FOR : ---Random Access Memory
- Which scientist was responsible for binomial nomenclature ? ---Linnaeus
- From which part of the plantsis turmeric,a commonly-used colourant and antiseptic , obtained ? ---From stem
- The colour of cow’s milk is slightly yellowish due to the presence of : ---Riboflavin
- Reserpine is used to : ---Reduce high blood pressure
- Xerophthalmia is caused by the dietary deficiency of : ---Vitamin A
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