Everyday Science Most Repeated Questions in PPSC,FPSC,NTS and other exams || Rare collection from Past Papers
▪ First artificial satellite was Sputnik-I sent by Soviet Union on October 4, 1957
• What country launched its first space rocket January 1961-Italy
• First human in space is Yuri Gagrin 1961 on USSR • First space scientist was Henry Quendish
• First woman in space was Valentine Khurachoof in 14 June, 1963
• Apollo XI enabled man to step on moon
▪ Generators convert mechanical energy into electricity.
▪ Nuclear energy is a cheap source of abundant electricity.
▪ Why is one’s breath visible in cold but not in hot weather? Because the water vapours present in breath condenses
▪ while breathing incold weather and therefore are visible.
▪ Epiphytes is a plant that grows upon another plant.
▪ Joseph Aspdin is the inventor of cement.
▪ Neurology is the science of nervous system.
▪ Biochemistry is the application of statistics in the study of Biology.
▪ A sheet of muscles called diaphragm separates the chest from the abdomen.
▪ The pattern for building protein molecules is stored in the messenger RNA
▪ Anvil and stirrup are names of bones present in the EAR
▪ The young plant inside a grain of wheat is called the embryo plant
▪ In born behaviour that involve only one part of the body are called REFLEX ACTION
▪ Animals which obtain their food from dead organisms are called Scavengers
▪ Riboflavin is not affected by cooking.
▪ The number of chromosomes in the spermatozoa is twenty-three
▪ The energy possessed by a water fall is kinetic energy.
▪ Rainbows are produced by the reflection of light through raindrops.
▪ Light switches in our homes are connected in parallel series.
▪ Oil bulbs cleaner and is less damaging to the environment than coal as a fuel.
▪ Enzymes are biological catalysts which have multiple function in the body.
▪ The difference between electrical charges at the two ends of a conductor is called Potential difference.
▪ The branch of zoology which deals with the study of insects is called Entomology
▪ Fuels formed from animal and plant matter that lived thousands of years ago are known as fossil fuels
▪ Cryptograms is a coded message; a text or message that is in code or cipher
▪ Reserve food material is usually stored as starch in plants.Reserve food material is usually stored as glycogen in liver and muscles of animals.
▪ Purest form of iron is wrought iron
▪ Hypo is a solution of sodium thiosulphate
▪ Aorta is an organ of the circulatory system
▪ Circular aperture which appears as a dark spot in the eye is called pupil
▪ Bacteria are parasites
▪ Ruby is an Oxide of Aluminum
▪ Visible light energy has the wavelength range of 400 to 700 Nanometer.
▪ The particles with positive charge but having mass equal to that of electron is called Proton.
▪ Iron corrodes due to the formation of Iron Oxide.
▪ Transistors do not need a warm up period because they have no Filament.
▪ The type of radiation hat is unaffected by magnetic field is called Alpha.
▪ The Kelven scale of temperature is called the absolute scale.
▪ If we know the mass of an object and the force applied on it, it is possible to calculate acceleration of the object.
▪ Arteries become hard due to deposition of Fats in them.
▪ What is the source of energy for the human brain? Phosphorous
▪ How many Ergs are these in 1 Joule? 107
▪ The unit of current is Ampere
▪ Who invented typewriter? Sholes
▪ The first attempt in printing was made in England by William Caxton
▪ Who was the surgeon who pioneered antiseptic surgery in 1865? Joseph Lister
▪ Who proposed the chemical evolution of life? Haechel .
▪ Who among the following evolved the concept of relationship between mass and energy? Einstein
▪ Who discovered Uranus? Herschel
▪ Which of the following helps in clotting of blood? Vitamin K (Blood do not clotting due to heparin)
▪ Total volume of blood in a normal adult human being is 5-6 liters
▪ Which of the following have maximum calorific value? Carbohydrates
▪ Which of the following vitamins promote healthy functioning of eyes in human beings? Vitamin A
▪ Bronchitis is a disease of which of the following organs? Respiratory tract
▪ Barium is used for X-ray of alimentary canal
▪ Which of the following pairs is incorrect? Poliomyelitis-monkey
▪ Which of the following statements is correct Pulmonary artery carries impure blood
▪ When sound is reflected from floor, ceiling or a wall , it mixes with the original sound and change its complexion, it is called as Reverberation
▪ The of light in vacuum is about 300 Million kilometers per second
▪ Ice can be changed to water by Changing the motion of the water molecules
▪ The temperature of liquid nitrogen is -196°C
▪ Information can be sent over long distances in the form of Light signals through optical fibres
▪ Computers can Add and subtract information only.
▪ IBM stands for International Business Machines
▪ Chemicals used to kill weeds are called as Herbicides
▪ The cytoplasm consists of several types of structures, which are called Organelles
▪ The structure of DNA was elaborated by Watson and Crick in 1953
▪ In a DNA molecules, the rulefor base pairing is Adenine always bound with thymine and cytosine with guanine
▪ As per eating habit, squirrels are Frugivorous
▪ Water loss from leaves through stomata is called as Transpiration
▪ Nervous system in human consists of:
Brain, spinal cord and nerves. (central and peripheral)
▪ In human eye, the light sensitive layer made of specializes nerve cells, rods and cones is called as The retina.
▪ Copper can be converted into gold by Artificial Radioactivity
▪ In winter an iron pipe feel colder than a wooden window . This is because wood is non-Conductor
▪ The echo (reflected sound) will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least 56fft
▪ 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
▪ Polygenic characteristic are controlled by Multiple genes
▪ Which of the following , lists the four stages of food processing in order?ingestion , digestion , absorption , elimination
▪ The energy needed to fuel essential body processes is called recommended daily allowance
▪ Inhaled air passes through which of the following in the last? Bronchiole
▪ Cobalt is a material which is Strongly attracted by a magnet
▪ What is the chance of diabetic baby born to parents both heterozygous normal ?¼
▪ Role of biotechnology in the production of food based on Fermentation
▪ Which form of drug abuse involves most risk of infection with the HIV (AIDS) virus? Injection of heroine
▪ Chemical name of vinegar is Dilute acetic acid
▪ Defeciency of following vitamin decreases hemoglobin production Thiamine
▪ The most splendid and the most magnificient constellation on the sky is Orion
▪ Diamond is a very expensive ornament. It is composed of a single element Carbon
▪ Television signals are converted into light signals by Photo diode
▪ Where do most of Asteroids lie?
In asteroid belt between the orbits of Mars and Jupiter
▪ The number of spark plugs needed in a diesel engine is 0
▪ The half life of a radioactive element is 8-days. How long it take to reduce it from 10 mg to 5 mg? 8 days
▪ The term ‘Blue Shift’ is used to indicate Doppler Effect in which an object appears bluer when it is moving towards the observer or observer is moving towards the object.
▪ Kilowatt-hour is a unit of Electric Current
▪ Fuel used in a Fast Breeder Reactor is Uranium Plutonium Oxide
▪ Monsoon is caused by Seasonal reversal of winds
▪ Which of the following atmospheric layers help in radio communication? Ionosphere
▪ A moderator is used in nuclear reactor in order to Slow down the speed of the neutrons
▪ Sedimentary rocks are Porous
▪ Quartz crystal in quartz watches work on the principle called Piezo-electric effect
▪ The fruits without seed, like banana, are called parthenocarpic fruits