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    Home MCQ aptitude General-science Science test-1

    Science Test 1 General Science Aptitude

    Science Test 1 General Science Aptitude
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    123

    Question 1

    The development of the ultra microscope makes use of the _____?
    Show explanation Expand Question
    The ultramicroscope relies on the Tyndall effect, which is the scattering of light by particles in a colloid. This scattering allows very small particles, otherwise invisible under ordinary light, to be observed.
    Not clear enough?

    Question 2

    Which of the following bases is involved in the making of soap?
    Show explanation Expand Question
    Soap is made through the process of saponification, where fats react with a strong alkali. Caustic soda \((NaOH)\) is the base used, producing soap and glycerol.
    Not clear enough?

    Question 3

    What is the pH of water?
    Show explanation Expand Question
    Pure water is neutral with hydrogen ion concentration \([H^+] = 1 \times 10^{-7}\). Using the formula: \[ pH = -\log[H^+] = -\log(1 \times 10^{-7}) = 7 \] Hence, the pH of pure water is 7.
    Not clear enough?

    Question 4

    Glass is made of _____?
    Show explanation Expand Question
    Glass is produced mainly from quartz (SiO\(_2\)) and mica, heated at very high temperatures to form an amorphous solid.
    Not clear enough?

    Question 5

    Which of the following is called strategic metal?
    Show explanation Expand Question
    Uranium is known as a strategic metal because of its essential role in nuclear energy and nuclear weapons production.
    Not clear enough?

    Question 6

    Which of the following is most elastic?
    Show explanation Expand Question
    Elasticity is the ability of a material to return to its original shape after deformation. Steel is the most elastic among the options provided.
    Not clear enough?

    Question 7

    Which one among the following is the main ingredient in cement?
    Show explanation Expand Question
    Gypsum is the main ingredient in cement as it helps control the setting time and improves workability.
    Not clear enough?

    Question 8

    Which one among the following is not a source of renewable energy?
    Show explanation Expand Question
    Fuel cells generate electricity through chemical reactions, not by harnessing renewable sources. Hence, they are not classified as renewable energy.
    Not clear enough?

    Question 9

    For sending sound waves at large distance, which waves are used?
    Show explanation Expand Question
    Radio waves have long wavelengths that allow them to travel large distances, making them suitable for communication.
    Not clear enough?

    Question 10

    The waves used for sending signals to the satellite from ground station are _____?
    Show explanation Expand Question
    Microwaves are used to send signals to satellites as they can penetrate the atmosphere with minimal interference.
    Not clear enough?
    123

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