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T2 CH1 Heat and Temperature Science - T2 CH1 Heat and Temperature

Tamil Nadu Board - STD 7 - Science (Tamil - English Medium). 76 questions in this chapter.

Question types

T2 CH1 Heat and Temperature question types

76 questions across 9 question groups — pick any mix to generate a Science paper with step-by-step answer keys.

76
Questions
9
Question groups
5
Question types
Sample Questions

T2 CH1 Heat and Temperature questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1MCQ1 Mark
Which of the following temperature conversions is incorrect
K ( Kelvin) = °C ( Celsius) + 273.15
  • A
     °C = -273.15, K = 0
  • B
    °C = -123, K = +150.15
  • C
    °C = +127, K = +400.15
  • ✓
    °C = +450, K =

Answer: D.

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Q 2MCQ1 Mark
Mercury is often used in laboratory thermometers because it ______.
  • A
    is a harmless liquid
  • B
    is silvery in colour and is attractive in appearance
  • ✓
    Expands uniformly
  • D
    is a low cost liquid

Answer: C.

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Q 4MCQ1 Mark
In thermometer when bulb comes in contact with hot object, liquid inside it ______.
  • ✓
    expands
  • B
    contracts
  • C
    remains same
  • D
    none of above

Answer: A.

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Q 5MCQ1 Mark
International unit of measuring temperature is ______.
  • ✓
    Kelvin
  • B
    Fahrenheit
  • C
    Celsius
  • D
    Joule

Answer: A.

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Q 11Assertion & Reason1 Mark
(A): When a very hot liquid is poured into a thick glass tumbler it cracks.
Reason (R): Unequal expansion of inner and outer glass walls causes the glass to crack.
  • ✓
    Both A and R are true but R is the correct explanation of assertion.
  • B
    Both A and R are true but R is not correct explanation of assertion.
  • C
    A is true but R is false.
  • D
    A is false but R is true.

Answer: A.

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Q 12Assertion & Reason1 Mark
(A): Heat energy is transferred from one body to another due to a temperature difference between them.
Reason (R): Heating a substance causes a rise in temperature.
  • A
    Both A and R are true but R is the correct explanation of assertion.
  • ✓
    Both A and R are true but R is not correct explanation of assertion.
  • C
    A is true but R is false.
  • D
    A is false but R is true.

Answer: B.

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Q 24[ 2 Marks Questions ]2 Marks
Swathi kept a laboratory thermometer in hot water for some time and took it out to read the temperature. Ramani said it was a wrong way of measuring temperature. Do you agree with Ramani? Explain your answer.
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Q 28Match The Following5 Marks
Match the following
i.Clinical thermometerA form of energy
ii.Normal temperature of human body100°C
iii.Heat37°C
iv.Boiling point of water0°C
v.Melting point of waterKink
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Q 30[3 Marks Question]3 Marks
Higher Order Thinking question Go to a veterinary doctor (a doctor who treats animals). Discuss and find out the normal temperature of domestic animals and birds.
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