9th Class General Science 3rd Quarter Book Paper

Q1. Multiple choice questions (Attempt all · 12 × 1 = 12)

1. One litre of water is cooled from 4°C to 0C, its volume:
   1. decreases then increases
   2. remains same
   3. increases
   4. decreases
2. The least count of analog stopwatch is:
   1. 0.01 s
   2. 0.1 s
   3. 1 s
   4. 10 s
3. Which of the following produces least friction?
   1. Sliding friction
   2. Rolling friction
   3. Static friction
   4. Kinetic friction
4. Glue is an example of _______ solid:
   1. crystalline
   2. amorphous
   3. liquid-solid
   4. ductile
5. Which of the following is not a derived unit?
   1. pascal
   2. newton
   3. kelvin
   4. joule
6. The weight of an object at the Moon’s surface is _______ of the weight on Earth.
   1. 46028
   2. 46027
   3. 46025
   4. 46024
7. What type of intermolecular forces holds liquid N₂ together?
   1. ionic bond
   2. London dispersion force
   3. hydrogen bond
   4. dipole-dipole force
8. The unit of weight in terms of base units is:
   1. kg m s⁻²
   2. kg m⁻¹ s⁻²
   3. kg m s⁻¹
   4. kg m⁻¹ s⁻¹
9. As a fielder you roll a ball in the cricket ground, it stops before reaching the bowler due to:
   1. energy
   2. temperature
   3. pressure
   4. friction
10. The process which involves the transformation between gas and solid is:
    1. melting
    2. freezing
    3. evaporation
    4. sublimation
11. The product of 4.513 and 7.21, up to correct number of significant figures is:
    1. 32.6
    2. 32.5
    3. 32.53
    4. 32.54
12. Which material property affects the friction?
    1. Density
    2. hardness
    3. surface roughness
    4. melting point