Everyday Science Mcqs (2021)

Computer Mcqs (754)

Math Solutions (1)

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  • 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 ?
    1. Chemical Reaction
    2. Nuclear reaction
    3. Fission nuclear reaction
    4. Fusion nuclear reaction
    5. None of these

  • The principle used in radar is the same as that of Sonar. In radar we use radio waves ; whereas in sonar we use ?
    1. red waves
    2. Infrared waves
    3. Ultrasonic
    4. super sonic
    5. None of these

  • A six feet tall lady wants to see her full image in a plane mirror . The minimum length of the mirror will be ?
    1. 6 feet
    2. 12 feet
    3. 4 feet
    4. 3 feet
    5. None of these

  • 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 _________?
    1. Visible
    2. Transparent
    3. Invisible
    4. opaque
    5. None of these

  • It is possible to recognize a person in the dark by simply hearing his unique voice . It is because of the_______?
    1. pitch
    2. Frequency
    3. Time period
    4. Quality
    5. None of these

  • 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 ________?
    1. 1120 ft
    2. 120 ft
    3. 56 ft
    4. 100 ft
    5. None of these

  • In winter an iron pipe feel colder than a wooden window . This is because wood is_______?
    1. Conductor
    2. Non-Conductor
    3. Semi- Conductor
    4. Not a solid while iron is a solid
    5. None of these

  • Water is heated in a kettlE. The inside water is heated by convection. A person sitting near the fire receives heat by ________?
    1. Conduction
    2. Convection
    3. Radiation
    4. Reflection
    5. None of these

  • In a railway track, two rails are joined end to end with a gap tin between them because?
    1. Steel can be saved
    2. Accidents due to contraction in winter can be avoided
    3. Air gaps are necessary for bearing the weight of running train
    4. Accidents due to expansion in summer can be avoided
    5. All of these

  • Name the famous book of Ibn-Sina in which he discussed human physiology and medicine ?
    1. Al-Qanun
    2. Al-Masudi
    3. New Renaissance
    4. Tadhkira
    5. None of these

  • Animal which captures and readily kills living animals for its food is called___________?
    1. Parasite
    2. Scavenger
    3. Predator
    4. Mammal
    5. None of these

  • The fruits without seed, like banana, are called_____________?
    1. Seedless fruits
    2. Parthenogenesis fruits
    3. Parthenocarpic fruits
    4. placental fruits
    5. Organic fruits

  • Quartz crystal in quartz watches work on the principle called?
    1. Photoelectric effect
    2. Stark effect
    3. Thermionic effect
    4. Piezo-electric effect
    5. None of these

  • Oasis is associated with___________?
    1. Glaciers
    2. Desert
    3. Islands
    4. Volcanoes
    5. Fertile land

  • Yeast is used in making bread because it produces____________?
    1. Carbon dioxide
    2. Sugar
    3. Bacteria
    4. Oxygen
    5. None of these

  • The phenomenon of Aurora Borealis, the display of red and green lights in northern hemisphere is due to radiations from____________ ?
    1. Ionosphere
    2. Troposphere
    3. Mesosphere
    4. Stratosphere
    5. None of these

  • Ozone layer prevents ______________ radiation from entering the atmosphere?
    1. Infra-red
    2. Ultraviolet
    3. X-rays
    4. Gamma rays
    5. None of these

  • Which one of the following is a non-metallic mineral?
    1. Manganese
    2. Magnesium
    3. Gypsum
    4. Bauxite
    5. None of these

  • Sedimentary rocks are__________?
    1. Porous
    2. Hard
    3. Rough
    4. Brittle
    5. Volcanic

  • A moderator is used in nuclear reactor in order to ?
    1. Accelerate the neutrons
    2. Slow down the speed of the neutrons
    3. Increase the number of elections
    4. Decrease the number of electrons
    5. None of these

  • Which of the following atmospheric layers help in radio communication?
    1. Exosphere
    2. Ionosphere
    3. Troposphere
    4. Stratosphere
    5. Ozone layer

  • Fuel used in a Fast Breeder Reactor is _____________?
    1. Uranium Oxide
    2. Uranium Plutonium carbide
    3. Uranium Plutonium Oxide
    4. Uranium thorium Oxide
    5. None of these

  • Monsoon is caused by____________________?
    1. Seasonal reversal of winds
    2. Revolution of earth
    3. Movement of clouds
    4. Rise in temperature
    5. Rain forests

  • The term ‘Blue Shift’ is used to indicate?
    1. Doppler effect in which an object appears bluer when it is moving towards the observer or observer is moving towards the object.
    2. Turning a star from white to blue
    3. In future sun would become blue
    4. Black hole was blue at its start
    5. None of these

  • The half life of a radioactive element is 8-days. How long it take to reduce it from 10 mg to 5 mg?
    1. 4 days
    2. 12 days
    3. 16 days
    4. 8 days
    5. None of these