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PHYSICS MCQs

Total Questions : 3767 | Page 76 of 377 pages
Question 751. Liquids and gases never show
  1.    Diamagnetic property
  2.    Paramagnetic property
  3.    Ferromagnetic property
  4.    Electromagnetic property
 Discuss Question
Answer: Option C. -> Ferromagnetic property
Question 752. A circular plate, a cube and a sphere, all made up of same material and having the samemass, are heated to 300°C and left in a room. Which of them will have the slowest rate of cooling?
  1.    Circular plate
  2.    Cube
  3.    Sphere
  4.    All will cool at the same rate
 Discuss Question
Answer: Option C. -> Sphere
Question 753. The humidity of the air depends upon
  1.    Weather
  2.    Temperature
  3.    Location
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 754. In a freezer ice cubes will be formed more quickly in trays made of
  1.    Rubber
  2.    Plastic
  3.    Aluminium
  4.    Wood
 Discuss Question
Answer: Option C. -> Aluminium
Question 755. The ''four stroke petrol engine' is based on
  1.    Carnot-cycle
  2.    Otto-cycle
  3.    Diesel-cycle
  4.    Boyle's-cycle
 Discuss Question
Answer: Option B. -> Otto-cycle
Question 756. The spring balance works on the principle of ________ .
  1.    Boyle's Law
  2.    Hooke's Law
  3.    Bernoulli's principle
  4.    Pascal's Law
 Discuss Question
Answer: Option B. -> Hooke's Law
Question 757. A metal plate with a circular hole at the centre is heated. What will happen to the area of the hole ?
  1.    Increase
  2.    Dacrease
  3.    Remain constant
  4.    Will increase first and then dcrease
 Discuss Question
Answer: Option A. -> Increase
Question 758. Air is said to be saturated when
  1.    Its pressure is minimum
  2.    It contains the maximum content of water vapour
  3.    Its thickness is maximum
  4.    It blows over the barren land
 Discuss Question
Answer: Option B. -> It contains the maximum content of water vapour
Question 759. At constant pressure, the volume of a fixed mass of a gas is directly proportional to its absolute temperature. It is the statement of
  1.    Boyle's Law
  2.    Charle's Law
  3.    Gay-Lussac's Law
  4.    Avogadro's Law
 Discuss Question
Answer: Option B. -> Charle's Law
Question 760. Which of these is true of all simple machines?
  1.    These make work easier
  2.    Work input > work output
  3.    Both A & B
  4.    None of the above
 Discuss Question
Answer: Option C. -> Both A & B

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