You Scored:
Ranking:
Genral Science MCQs MCQ's Solved
1. The time light takes from sun to reach Earth is:
25 minutes
8 minutes
60 minutes
45 minutes
2. The most abundant natural Iron oxides are
Magnetite and Bauxite
Magnetite and Pyrite
Hematite and Pyrite
Hematite and Magnetite
3. The most abundant elements in sea water are
Chlorine and Iodine
Sodium and Potassium
Sodium and Chlorine
Sodium and Calcium
4. The of light in vacuum is about
300 Million kilometer per second
300 Million meters per second
None of these
300 Million meters per hour
5. The density of water is greatest at
100˚C
0˚C
32˚C
4˚
6. Light from sun travels a distance before it reaches Earth:
100 Million Km
50 Million Km
150 Million Km
200 Million Km
7. Boiling of an egg is a change which is
Physiological
None of these
Physical
Chemical
8. The speed of sound in dry air at 20 C is about
None of these
230 meters per second
330 meters per second
130 meters per second
Question was not answered
9. The temperature of liquid nitrogen is
196˚C
80˚C
100˚C
30˚C
10. An electric current can produce
All of these three
Heating effect
Magnetic effect
Chemical effect
11. If an alkali is slowly added to an acidic solution, the pH of the acidic solution will:
Decrease
None of these
Increase to 7 and then decrease
Increase
12. The magnet always points in the same direction, if move freely i.e. towards north and south poles, because of:
Gravitational field
A lot of metals deposits on north and south poles
Due to attraction of north pole and repulsion of Western pole
Earth is a huge magnet
13. The building blocks of elements are called
Atoms
None of these
Compounds
Molecules
14. The usual raw material for ceramics, generally found beneath the top soil is?
Sand
Melamine
Clay
Slit
15. When sound is reflected from floor, ceiling or a wall, it mixes with the original sound and change its complexion, it is called as
Sound
Noise
Echo
Reverberation
16. Which one of the following statements is true:
None of the statements is true
The best conductors are non-metals
A vacuum cannot conduct heat
Gases do not conduct heat
17. Ice can be changed to water by:
Adding more water molecules
Rearranging the atoms in water molecules
None of these
Changing the motion of the water molecules
18. The most suitable thermometer for measuring the boiling point of water is:
Alcohol thermometer
Bimetallic thermometer
Mercury thermometer
None of these
19. Which one of the following is an alkali?
Water
Slaked lime
Lemon Juice
Vinegar
20. The unit of home electricity energy consumption is
Joule hour
Watt hour
Kilojoule hour
Kilowatt hour
