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question_answer1)
A simple machine is a basic mechanical device for applying force. Fill in the blank about the screw, which is a simple machine. The screw is a (n) ______ wrapped around a central cylinder.
A)
Lever done
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B)
Inclined plane done
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C)
Wedge done
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D)
Wheel and axle done
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question_answer2)
You are working in MS-Word applications. Which of the following is a volatile memory that stores all the data of MS-Word application that is currently running on the computer?
A)
Hard disk done
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B)
ROM done
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C)
RAM done
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D)
Flash drive done
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question_answer3)
A shadow is the dark region that is formed when an opaque object is placed in the path of light. Which one of the following is not required for the formation of a shadow?
A)
Source of light done
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B)
Screen done
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C)
Opaque object done
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D)
Lens done
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question_answer4)
Which of the following fact is correct about asteroids?
A)
Asteroids do not revolve around the Sun the way planets do. done
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B)
The asteroid belt is between Venus and Jupiter. done
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C)
Asteroids are planet like objects, but smaller and often irregularly shaped. done
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D)
Asteroids cannot be classified into groups. done
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question_answer5)
A change in which the substance can get back to its original form is called a physical change. Which of the following is a physical change?
A)
Burning of paper done
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B)
Bursting of crackers done
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C)
Cooking of food done
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D)
Melting of ice done
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question_answer6)
Satellites are heavenly bodies that revolve around a planet. Earth has one natural satellite but many artificial ones. Which of these is not a satellite of earth?
A)
GSAT-7 done
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B)
International Space Station (ISS) done
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C)
Moon done
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D)
Phobos done
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question_answer7)
Almost 71% of the earth's surface is covered by oceans. How many oceans are there on earth?
A)
3 done
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B)
4 done
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C)
5 done
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D)
6 done
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question_answer8)
Magnets are materials that attract metal bodies towards themselves. Which one of the following will not be attracted by a magnet?
A)
Fridge door done
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B)
Sheet of paper done
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C)
Iron nail done
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D)
Steel plate done
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question_answer9)
This instrument is used in submarines to observe activity above the water surface while the submarine is submerged. Which instrument are we talking about?
A)
Binoculars done
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B)
Telescope done
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C)
Periscope done
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D)
Kaleidoscope done
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question_answer10)
This planet is the largest of the inner planets. Its surface is mostly covered with water and it appears bluish from space. It revolves on its axis every 24 hours. What is the name of this planet?
A)
Mercury done
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B)
Venus done
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C)
Earth done
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D)
Mars done
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question_answer11)
An ocean current is a continuous, directed movement of seawater generated by forces acting upon it. Because of their heating and cooling qualities, they can affect weather and climate. How do ocean currents transfer heat in the ocean?
A)
By convection done
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B)
By radiation done
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C)
By conduction done
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D)
By evaporation done
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question_answer12)
The earth is covered by a number of imaginary lines that help us study it. For example, isotherms are lines which connect places with the same temperatures. Which lines connect places with the equal atmospheric pressure?
A)
Isobars done
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B)
Isobath done
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C)
Isohaline done
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D)
Isohels done
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question_answer13)
You would not be able to operate your remote control without this. It is a compact power unit that converts chemical energy into electrical energy. What is it?
A)
Cell done
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B)
Dynamo done
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C)
Engine done
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D)
None of these done
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question_answer14)
Conductors are materials and substances that allow electricity to pass through them. Which of the following is a conductor?
A)
Cloth done
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B)
Paper done
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C)
Wood done
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D)
Iron done
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question_answer15)
Gravitation or gravity is a natural phenomenon by which all things having mass are brought toward or gravitate toward one another, including stars and planets. Which of the following is the best example of gravitation or gravity?
A)
A car hits a tree and motion stops done
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B)
A breeze blows and a sailboat moves done
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C)
A person drops a ball and it falls to the ground done
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D)
A book is pushed and it moves across the table done
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question_answer16)
An element is a substance that cannot be chemically interconverted or broken down into simpler substances. Which of these is an element?
A)
Carbon dioxide done
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B)
Air done
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C)
Hydrogen done
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D)
Water done
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question_answer17)
Filtration can separate substances from a mixture by using a funnel and filter paper. Which of the following materials can be separated using filtration?
A)
A solution of salt and water done
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B)
A solution of vinegar and water done
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C)
A mixture of mud and water done
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D)
A mixture of sand and sawdust done
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question_answer18)
Of the more than hundred elements known to man, most are metals. Which of the following is a property of metals?
A)
Bendable done
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B)
Shiny done
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C)
Conducts heat done
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D)
All of these done
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question_answer19)
The CPU is an important part of your computer. You might call it the computer's brain. What does CPU stand for?
A)
Central Processing Unit done
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B)
Control Processing Unit done
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C)
Command Processing Unit done
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D)
Communications Procedures Unit done
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question_answer20)
Volume can be defined as the amount of space that a substance or object occupies, or that is enclosed within a container. Which of the following tools would you use to measure volume?
A)
Compass done
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B)
Weighing balance done
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C)
Graduated cylinder done
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D)
Ruler done
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question_answer21)
When light rays move from one medium to another, they bend because of varying speeds in different mediums. What is this phenomenon called?
A)
Radiation done
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B)
Convection done
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C)
Insulation done
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D)
Refraction done
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question_answer22)
It is a blanket-like layer that surrounds the earth. It contains a mixture of gases including oxygen which most organisms need to breathe. It protects us from the harmful radiations of the sun. What is this layer called?
A)
Hydrosphere done
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B)
Geosphere done
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C)
Atmosphere done
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D)
Lithosphere done
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question_answer23)
Fossils are the preserved remains or traces of animals, plants, and other organisms from the remote past. Fossils of sea organisms that no longer exist are sometimes found in high mountain areas. How do scientists explain these discoveries?
A)
A new climate caused an ocean to disappear. done
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B)
The mountains were lifted from low, wet areas. done
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C)
The fossils were carried there by flowing rivers. done
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D)
The samples were left behind from volcanic eruptions. done
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question_answer24)
It is a reflection of sound that arrives at the listener with a delay after the direct sound. You often observe this phenomenon in mountainous areas. What is it called?
A)
Echo done
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B)
Mirage done
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C)
Decibel done
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D)
None of these done
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question_answer25)
Which of the following is used to see objects that are too small for the unaided eye?
A)
Spectacles done
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B)
Microscope done
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C)
Contact lens done
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D)
Telescope done
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