One Paper MCQs Solved Preparation Material All in One for PPSC FPSC NTS PTS OTS

▪ It is possible to recognize a person in the dark by simply hearing his unique voice . It is because of the pitch
▪ When a ray of sunlight enters a dark room , its straight path become visible because of dust particles hanging in the air. It is because light is Visible
▪ A six feet tall lady wants to see her full image in a plane mirror . The minimum length of the mirror will be 3 feet
▪ The principle used in radar is the same as that of Sonar. In radar we use radio waves ; whereas in sonar we use Ultrasonic
▪ In a fission nuclear reaction , a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear reaction is called Fusion nuclear reaction
▪ German silver is an alloy of approximately 60% copper, 20% nickle and 20% zinc
▪ The Continent Antarctica lies at the South pole
▪ The temperature of the dead body is temperature of the place where it is kept
Cusec is a volumetric unit for measuring the flow of liquids, equal to one cubic foot per second
▪ Magnifying power of a simple microscope can be increased by increasing focal length of the lens
▪ A very important practical application of properties of matter is hoeing or “godi” practiced by the farmers. This property of matter is called Capillarity
▪ It is observed that the total pressure exerted by air on the man of average siz is around 14.7 lb wt. per square inch. But the man feels quite comfortable,. It is becausemof gravity
▪ A nuclear reactor is a device used to carry out controlled nuclear reaction whereas GM counter is a device used to detect nuclear Radiation
▪ A body can escape the gravitational pull of the earth if it is thrown up with a velocity of 7 miles per sec
▪ Night vision is possible with the help of Infrared Rays
▪ Myopia is a defect of human eye. it can be corrected by using a lens called Concave lens
▪ Walnuts can be broken in the hand by squeezing two together but not one. It is because of Work done
▪ The planet Mercury completes one rotation around the sun is 88 days
▪ Fossils found in the lowest geological strata are generally most Primitive
▪ Evolution can be described as A continuing process
▪ What is the only source of new alleles? Mutation