A gas which obeys Charles’ law exactly has a volume of 283 cm³ at 10°C. What is its volume at 30°C?
A. 142cm³ B. 293cm³ C. 303cm³ D. 566cm³ E. 849cm³ Correct Answer: Option C – 303cm³
Which of the following colours of surfaces will radiate heat energy best?
A. Red B. White C. Black D. Yellow E. Blue Correct Answer: Option C – Black
Which of the following statements is/are correct about water?
I. Pure water freezes at 0°C under normal pressure ll. Water has its highest density at 4°C III. The volume at 4°C A. I only B. II only C. I and II only D. I and III only E. II and III only Correct Answer: Option C – I and II...
A body of mass 5kg falls from a height of 10m above the ground. What is the kinetic energy of the body just before it strikes the ground? (Neglect energy losses and take gas 10m/s²)
A. 5J B. 25J C. 250J D. 500J E. 625J Correct Answer: Option D – 500J Explanation v² = u² + 2gh = 0 + 2 x 10 x 10 v² = 200; K.E = ½mv² = 1/2 x 5 x 200 = 500J
A barometer can be used in determining the; Which of the following is/are correct?
I. height of a mountain II. depth of a mine III. dew point. A. I, II and III B. II and III only C. I and III only D. I and II only E. III only Correct Answer: Option D – I and II onlyProducts
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