1. Pressure is defined as:
A) Force × Area
B) Force / Area
C) Area / Force
D) Mass × Volume
Answer: B
2. The SI unit of pressure is:
A) Joule
B) Watt
C) Pascal
D) Newton
Answer: C
3. One Pascal is equal to:
A) 1 N/m
B) 1 N/m²
C) 1 kg/m²
D) 1 J/m²
Answer: B
4. Pressure increases when:
A) Area increases
B) Force decreases
C) Area decreases
D) Mass decreases
Answer: C
5. A sharp knife cuts easily because it has:
A) Large area
B) Small area
C) Low force
D) Zero pressure
Answer: B
6. Atmospheric pressure at sea level is approximately:
A) 1.01 × 10⁵ Pa
B) 10⁵ Pa
C) 1.5 × 10⁵ Pa
D) 5 × 10⁵ Pa
Answer: A
7. Instrument used to measure atmospheric pressure is:
A) Thermometer
B) Barometer
C) Hygrometer
D) Lactometer
Answer: B
8. The device used to measure gas pressure is:
A) Manometer
B) Hydrometer
C) Ammeter
D) Voltmeter
Answer: A
9. Pressure in liquids increases with:
A) Height
B) Depth
C) Area
D) Volume
Answer: B
10. The formula for pressure in liquids is:
A) P = mgh
B) P = F/A
C) P = ρgh
D) P = mv
Answer: C
11. The unit of atmospheric pressure in weather reports is often:
A) Newton
B) Joule
C) Millibar
D) Watt
Answer: C
12. At higher altitudes, atmospheric pressure:
A) Increases
B) Remains constant
C) Decreases
D) Becomes zero
Answer: C
13. A camel can walk easily on sand because:
A) It is light
B) It runs fast
C) Its feet have large area
D) Sand has low pressure
Answer: C
14. Hydraulic machines work on:
A) Archimedes’ Principle
B) Pascal’s Law
C) Boyle’s Law
D) Newton’s Law
Answer: B
15. According to Pascal’s Law, pressure applied to a liquid is transmitted:
A) Only upward
B) Only downward
C) Equally in all directions
D) Sideways only
Answer: C
16. Unit of pressure in CGS system is:
A) Pascal
B) Dyne/cm²
C) Newton
D) Joule
Answer: B
17. A diver experiences greater pressure when:
A) Near surface
B) At shallow depth
C) At greater depth
D) Outside water
Answer: C
18. The pressure exerted by a solid depends on:
A) Color
B) Shape only
C) Force and area
D) Volume
Answer: C
19. Why do mountaineers carry oxygen cylinders?
A) Low temperature
B) Low pressure at high altitude
C) High humidity
D) High gravity
Answer: B
20. When air is removed from a can, it gets crushed due to:
A) Internal pressure
B) Gravity
C) External atmospheric pressure
D) Friction
Answer: C
21. Pressure exerted by a liquid at a given depth depends on:
A) Shape of container
B) Density of liquid
C) Color of liquid
D) Surface area
Answer: B
22. A submarine controls its depth by changing:
A) Speed
B) Pressure of air inside tanks
C) Color
D) Shape
Answer: B
23. Vacuum means:
A) High pressure
B) Zero mass
C) No air or very low pressure
D) High density
Answer: C
24. Blood pressure is measured using:
A) Barometer
B) Sphygmomanometer
C) Thermometer
D) Hydrometer
Answer: B
25. If force is doubled and area remains same, pressure will:
A) Remain same
B) Be halved
C) Double
D) Become zero
Answer: C
26. Why do tractors have broad tires?
A) For speed
B) To reduce pressure on ground
C) To increase height
D) To increase friction
Answer: B
27. The pressure exerted by gases is due to:
A) Their color
B) Their temperature only
C) Collision of molecules
D) Gravity only
Answer: C
28. Standard atmospheric pressure is equal to:
A) 760 mm of Hg
B) 760 cm of Hg
C) 76 mm of Hg
D) 76 m of Hg
Answer: A
29. In liquids, pressure acts:
A) Only downward
B) Only upward
C) In all directions
D) Horizontally only
Answer: C
30. A needle sinks in water due to:
A) High buoyancy
B) Surface tension
C) High pressure
D) High density compared to water
Answer: D