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Grade 8- Formative

Quiz by Ipsita Shaw

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20 questions
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  • Q1
    1) 5 joule= _________cal
    2.2
    4.2
    0.24
    1.2
    30s
  • Q2
    2) Identify the correct transfer of heat energy from the following examples.
    Heat energy from a hot drink is transferred to cold hands.
    Heat energy is transferred from stirrer to hot soup
    An ice cube loses heat energy to a hot cup of tea as it melts
    Heat energy from the refrigerator is transferred to a hot pie in the refrigerator.
    30s
  • Q3
    3) Substance A has a higher specific heat capacity than substance B.? If both have equal mass then which of the two would require more heat energy for the same rise in temperature.
    Substance B
    Substance A
    Answer depends on the density of each substance
    Both require the same amount of heat.
    30s
  • Q4
    4) On heating a kettle of water on a stove, the hot water at the bottom of the kettle begins to rise and the cooler water at the top will sink to the bottom. This is an example of:
    Radiation
    All of the above
    Conduction
    Convection
    30s
  • Q5
    5) Which is true regarding solids?
    They are compressible
    The intermolecular space is large
    The intermolecular force of attraction is strong
    The molecules move freely within the solid
    30s
  • Q6
    6) The heat gained or lost by a body during a change of state is the product of its _______ and the specific latent heat.
    Change in temperature
    Weight
    Mass
    Volume
    30s
  • Q7
    7) Which among the following is INCORRECT regarding the use of detergent while washing clothes?
    It is added to decrease cohesive force between water molecules
    It is added to decrease adhesive force between water and cloth
    It is added to increase adhesive force between water and cloth
    It is added to decrease surface tension
    30s
  • Q8
    8) The force of attraction between two like molecules is called as______
    Electrostatic force
    Cohesive force
    Gravitational force
    Adhesive force
    30s
  • Q9
    9) Ray of light is incident obliquely at the water-air interface, then the refracted ray will _____
    Move along the normal
    Bend away from the normal
    Be parallel to the normal
    Bend towards the normal
    30s
  • Q10
    10) When a glass prism causes dispersion of white light, the colour deviated least is ________.
    Violet
    Green
    Yellow
    Red
    30s
  • Q11
    11) The band of seven colors obtained due to dispersion of white light is called as______.
    Dispersed band
    Colour band
    Spectrum
    Newton's band
    30s
  • Q12
    12) The angle through which a ray of light turns on passing through a prism is called ________.
    Angle of deviation
    Angle of reflection
    Angle of incidence
    Angle of emergence
    30s
  • Q13
    13) Rainbow is an example of which of the following phenomena of light?
    Lateral inversion
    Dispersion
    Reflection
    Refraction
    30s
  • Q14
    14) If the angle of incidence is 0 degree then angle of refraction will be______.
    45 degree
    60 degree
    0 degree
    90 degree
    30s
  • Q15
    15) Identify the type of lens.
    Question Image
    Biconvex
    Concavo convex
    Biconcave
    Convexo concave
    30s

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