1 Which material is most suitable for making a permanent magnet? A Soft iron B Copper C Steel D Aluminium
3 A clinical thermometer typically has a range of: A 0 °C to 100 °C B 35 °C to 42 °C C −10 °C to 110 °C D 20 °C to 50 °C
4 Which of the following materials is strongly attracted by a magnet? A Copper B Iron C Wood D Plastic
5 Which of the following statements best explains why a liquid-in-glass thermometer should have a narrow capillary bore? A To make the thermometer more sensitive to small temperature changes B To increase the range of temperatures that can be measured C To make the liquid expand more with heat D To reduce the cost of manufacturing the thermometer
6 What is the direction of a freely suspended bar magnet? A East-West B North-South C Random D Up-Down
7 In the kinetic molecular model, what happens to the average speed of gas particles when the temperature of the gas increases? A It decreases. B It remains the same. C It increases. D It becomes zero.
8 Why does diffusion occur faster in gases than in liquids? A Gas particles are larger B Gas particles move faster and have more space between them C Liquids have no particles D Gases have lower kinetic energy
10 Hard disk drives store data using: A Magnetic domains B Optical pits C Electric charges D Sound waves
11 The linearity of a thermometer means that: A It measures temperature in a straight line. B Its reading changes uniformly with temperature. C It can measure only linear temperatures. D It has a straight capillary tube.
12 Which statement best describes the motion of particles in a gas according to the kinetic molecular theory? A Particles are closely packed and vibrate in fixed positions. B Particles are far apart and move randomly at high speeds. C Particles are fixed and do not move at all. D Particles slide past each other but stay in contact.
13 What happens when the north pole of one magnet is brought near the north pole of another magnet? A They attract each other B They repel each other C They become neutral D They lose magnetism
14 A neutral point in a magnetic field is a point where: A Magnetic field is strongest B Magnetic field is zero C Magnetic field is infinite D Magnetic field reverses direction
15 What is the pattern of magnetic field lines around a bar magnet? A Straight lines from north to south B Closed loops from north to south outside the magnet C Circles around the magnet D Random lines
16 The pressure exerted by a gas is due to: A Collisions of gas particles with the walls of the container B Attraction between gas particles C The weight of the gas particles D The color of the gas
17 The space around a magnet where its magnetic force can be detected is called: A Magnetic field B Magnetic pole C Magnetic domain D Magnetic induction
18 Which statement best describes the motion of particles in a solid? A They move freely from place to place B They vibrate about fixed positions C They are completely stationary D They expand to fill the container
19 According to the kinetic molecular theory, which property of gas particles best explains gas pressure? A The average distance between gas particles B The collisions of gas particles with the walls of the container C The attractive forces between gas particles D The total number of gas particles in the container
21 Which of the following is a difference between heat and temperature? A Heat is measured in degrees, temperature in joules. B Heat is a form of energy, temperature is a measure of average kinetic energy. C Heat depends on the thermometer used, temperature does not. D Heat is always larger than temperature.
22 The magnetic domains in an unmagnetised piece of iron are: A All aligned in one direction B Randomly oriented C Completely absent D Arranged in a circle
24 A clinical thermometer is designed with a narrow constriction (kink) in the capillary. What is the main purpose of this constriction? A To make the thermometer more sensitive to small temperature changes B To prevent the liquid column from falling back when the thermometer is removed from the patient C To increase the range of the thermometer beyond 42°C D To make the thermometer easier to read in poor light
25 Which scale of temperature has absolute zero as its zero point? A Celsius scale B Fahrenheit scale C Kelvin scale D Rankine scale