Thermal Expansion | MCQs

    Q1: In a railway track, two rails are joined end to end with a gap tin between them because?

    ریلوے ٹریک میں، دو ریلیں سرے سے آخر تک جوڑ دی جاتی ہیں اور ان کے درمیان گیپ ٹن ہوتا ہے کیوں؟
    • A. Steel can be saved
    • B. Accidents due to expansion in summer can be avoided
    • C. Air gaps are necessary for bearing the weight of running train
    • D. Accidents due to contraction in winter can be avoided

    Q2: The increase in volume of water as its temperature is lowered from 4°C to 0°C is called _______?

    • A. Peculiar behaviour
    • B. None of these
    • C. Abnormal behaviour
    • D. Seductive behaviour

    Q3: Expanding of metal on heating is a ______ change.

    حرارتی نظام پر دھات کو بڑھانا ایک ______ تبدیلی ہے۔
    • A. Physical
    • B. Chemical
    • C. None of these
    • D. Permanent

    Q4: If 200 ml of a gas at constant pressure is heated from 0°C to to 100°C, the volume is corrected by multiplying by ______?

    • A. 373/273
    • B. 273/373
    • C. None of these
    • D. 100/0

    Q5: Unequal expansion of metals makes possible the operation ____?

    دھاتوں کی غیر مساوی توسیع آپریشن کو ____ ممکن بناتی ہے؟
    • A. Thermostats
    • B. None of these
    • C. Aneroid barometer
    • D. Hygrometers

    Q6: Linear thermal expansion of a solid depend upon ____?

    ٹھوس کی لکیری تھرمل توسیع ____ پر منحصر ہے؟
    • A. Original length
    • B. All of these
    • C. Properties of material
    • D. Increasing in temperature

    Q7: The molar volume of CO2 is maximum at?

    • A. 127 C and 1 atm
    • B. STP
    • C. 0 C and 2 atm
    • D. 273 C and 2 atm

    Q8: On heating,solids:

    • A. Condense
    • B. Shrink
    • C. Cancel
    • D. Expand

    Q9: Expansion in length of solids on heating is called _____?

    حرارت پر ٹھوس لمبائی میں توسیع _____ کہلاتی ہے؟
    • A. Both A and B
    • B. None of these
    • C. Thermal Expansion
    • D. Temperature Expansion
✅ Correct: 0 | ❌ Wrong: 0 | 📊 Total Attempted: 0
iamge