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Sound: Decibel: _________________ : ____________

Volume : Cube
Capacity : Hectare
Area : Square
Length : Meter

Which of these are characterize/s metals?
Good electrical conductors
Malleable and ductile
Form basic oxides

I, II and III
I only
II and III only
I and II only

Which of the following light has the longest wavelength?
Green
Blue
Red
Yellow

To be safe in the unlikely case of the lighting strikes, it is best to be inside a building framed with __________.
Cement
Steel
Iron
Wood

Which of the statement/s correctly differentiate/s boiling from evaporation?
Boiling happens at a definite temperature while evaporation can occur at any temperature.
Boling happens when vapor pressure exerted by the liquid become equal to the atmospheric pressure, while evaporation occurs when high energy molecules at the liquid surface continuously escape to the space above the liquid.
Boiling is always associated with the temperature while evaporation is related only to pressure.

I and III
I and II
II only
I only

1 answer

  1. For the first question about units:

    • Sound: Decibel: Decibel : Loudness
    • Volume : Cube
    • Capacity : Hectare
    • Area : Square
    • Length : Meter

    So the first question relates decibel to loudness.

  2. For the second question regarding metals: The characteristics that define metals are:

    • I: Good electrical conductors
    • II: Malleable and ductile
    • III: Form basic oxides

    So the correct answer is: I, II and III

  3. For the wavelength of light:

    • Green light has a shorter wavelength than blue and red.
    • Blue light has a shorter wavelength than red and yellow.
    • Red light has the longest wavelength among the options provided.

    Therefore, the answer is: Red

  4. For the safest structural material during a lightning strike:

    • It is best to be inside a building framed with Steel, as it provides a path to the ground for electric charge.

    So the answer is: Steel

  5. For the differentiation between boiling and evaporation:

    • I: Boiling happens at a definite temperature while evaporation can occur at any temperature.
    • II: Boiling happens when vapor pressure exerted by the liquid becomes equal to the atmospheric pressure, while evaporation occurs when high energy molecules at the liquid surface continuously escape to the space above the liquid.
    • III: Boiling is always associated with the temperature while evaporation is related only to pressure.

    The correct differentiations are I and II. Therefore, the answer is: I and II.