Q.1 |
A hockey player is moving Northward and suddenly turns Westward with the same speed to avoid an opponent. The force that acts on the player is ______. (NSO, 2014) |
a) |
Frictional force along Westward |
b) | Muscle force along Southward |
c) | Frictional force along the South-West |
d) | Muscle force along South-West. |
Q.2 |
Which of the following microorganisms play an important role in maintaining the balance of nitrogen gas in the atmosphere? |
a) |
Viruses |
b) | Bacteria |
c) | Algae |
d) | Protozoa |
Q.3 |
In humans, after fertilisation, the structure that gets embedded in the wall of the uterus is called _________. |
a) |
Ovum |
b) | Embryo |
c) | Foetus |
d) | Zygote |
Q.4 |
In cities, water from an overhead tank is supplied to houses using the principle of: (i) difference in pressure (ii) gravitational force (iii) decrease of friction in pipes |
a) |
Only (i) |
b) | Only (i) and (ii) |
c) | Only (ii) and (iii) |
d) | (i), (ii) and (iii) |
Q.5 |
Which of the following is a disadvantage of friction?
|
a) |
Only 1 |
b) | Only 2 |
c) | Only 4 |
d) | 1, 2, 3 and 4 |
Q.6 |
A ball of mass m is thrown vertically upwards. What is the rate at which the momentum of the ball changes? |
a) |
Zero |
b) | Infinity |
c) | Mg |
d) | 2Mg |
Q.7 |
Which of the following is the consequence of man's interference with nature? |
a) |
Increase in natural resources |
b) | Biological imbalance |
c) | Increase in the ozone layer |
d) | Reappearance of extinct species |
Q.8 |
Which of the following completes the given sentence? Sound can travel through __________. (p) gases only (q) solids only (r) liquids only (s) solids, liquids and gases |
a) |
p |
b) | q |
c) | r |
d) | s |
Q.9 |
Which of the following has the lowest percentage of carbon?
|
|
a) |
Peat |
|
b) | Bituminous |
|
c) | Anthracite and Lignite |
|
d) | Lignite and peat |
Q.10 |
Harish rolled a small steel ball at one edge of the glass bowl as shown below. |
a) |
The ball will roll out of the glass bowl near edge 'Q'. |
b) | It will stop at centre point 'R' after a number of to-and-fro motions. |
c) | It will keep moving between point 'P' and 'Q' and will never stop. |
d) | It will not move at all since friction is required for movement. |
Your Score: 0/10
Answers to Sample Questions from Olympiad Success:
Q.1 : c | Q.2 : b | Q.3 : b | Q.4 : b | Q.5 : c | Q.6 : c | Q.7 : b | Q.8 : d | Q.9 : a | Q.10 : c