Q.1 |
Take two samples, one of oil and other of water. Mix the two, you would observe that ________ |
a) |
They are soluble |
b) | Oil floats on water |
c) | Water floats on oil |
d) | None of these |
Q.2 |
Which of the following mixtures can be separated by using a filter paper? |
a) |
Vinegar |
b) | Salt water |
c) | Sand and water |
d) | Sugar water |
Q.3 |
Which of the following statements is/are correct with regard to our diet? |
a) |
Eat a diet rich in carbohydrates and proteins. |
b) | Drink plenty of water. |
c) | Eat green vegetables every day. |
d) | All of these |
Q.4 |
Karuna wrapped some green gram pulses in a wet cotton cloth. She opened it after a couple of days and found small, white thread-like structures on the seeds. What change did the pulses undergo? |
a) |
They have undergone a physical change. |
b) | They became fresh as usual by washing and drying. |
c) | They have undergone a chemical change. |
d) | They have undergone a reversible physical change. |
Q.5 |
Which of these properties of water helps in the washing of clothes? |
a) |
Transparency |
b) | Solubility |
c) | Conductivity |
d) | Compressibility |
Q.6 |
Sheela cooked rice in a rice cooker. What kind of change took place? (i) Irreversible change (ii) Endothermic change (iii) Natural change |
a) |
Only (i) and (ii) |
b) | Only (ii) and (iii) |
c) | Only (i) and (iii) |
d) | (i), (ii) and (iii) |
Q.7 |
Which of the following fibers on burning smells like burning hair? |
a) |
Cotton |
b) | Flax |
c) | Wool |
d) | Jute |
Q.8 |
Given in the figure are four containers that contain the same amount of water. |
a) |
Q |
b) | R |
c) | P |
d) | S |
Q.9 |
A magnet “X” repels another metal “Y” then __________. |
a) |
Y must be a non-magnetic material |
b) | Y must be a insulator |
c) | Y must be a magnet |
d) | Y must be conductor |
Q.10 |
There are four cups made of different materials: Silver, aluminium, wood and copper. In which of them will tea remain warm for a longer time? |
a) |
Silver cup |
b) | Aluminium cup |
c) | Wooden cup |
d) | Copper cup |
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Answers to Sample Questions from Olympiad Success:
Q.1 : b | Q.2 : c | Q.3 : d | Q.4 : c | Q.5 : b | Q.6 : a | Q.7 : c | Q.8 : d | Q.9 : c | Q.10 : c