Q.1 |
Which of the following comes as results of incomplete combustion of fuel such as petrol and diesel? |
a) |
Nitrogen oxide |
b) | Sulphur dioxide |
c) | Carbon monoxide |
d) | Carbon dioxide |
Q.2 |
From the given diagrams, in which of the following bulb will glow? |
a) |
|
b) | |
c) | |
d) | |
Q.3 |
Consider the following and choose the correct option. Assertion: Metals are sonorous. Reason: They are generally brittle in the solid state, they break into pieces when hammered. |
a) |
Both assertion and reason are correct and the reason is the correct explanation of assertion. |
b) | Both assertion and reason are correct but the reason is not the correct explanation of assertion. |
c) | The assertion is correct and the reason is incorrect. |
d) | The assertion is incorrect and reason is correct |
Q.4 |
PVC is a very durable and long lasting material which can be used in a variety of applications, either rigid or flexible, white or black and a wide range of colours in between. PVC is an example of ___________. |
a) |
polyester |
b) | thermoplastic |
c) | thermosetting plastic |
d) | acrylic |
Q.5 |
A student obtained a sharp image of the grills of a window on a screen using a concave mirror. His teacher remarked that for getting better results a well-lit distant object (preferably the Sun) should be focused on the screen. What should be done for this purpose? |
a) |
Move the screen and the mirror towards the object. |
b) | Move the screen and the mirror away from the object. |
c) | Move the screen slightly away from the mirror. |
d) | Move the mirror slightly towards the screen. |
Q.6 |
An aluminium strip is kept immersed in freshly prepared ferrous sulphate solution taken in a test tube, the change observed is that ___________. |
a) |
green solution slowly turns colourless |
b) | lower end of test tube become slightly warm |
c) | a colourless gas with the smell of burning sulphur is observed |
d) | light green solution changes to blue |
Q.7 |
Which among the following is found only in plant cell? |
a) |
Smooth endoplasmic reticulum |
b) | Nuclear pore |
c) | Centrosome |
d) | Leucoplast |
Q.8 |
Which of the following is NOT a characteristic feature of sexual reproduction? A) It involves the fusion of two reproductive cells. B) It leads to the creation of genetically diverse offspring. C) Fertilization may take place inside or outside the body of the female. D) The offspring receives its characteristics from one parent only. |
a) |
Only A |
b) | Only B |
c) | Only D |
d) | B and D |
Q.9 |
Rashmi is swinging in a swing in a sitting position. If she stands and swings, how will the period be affected? |
a) |
The period will not change. |
b) | The period will now be longer. |
c) | The period will now be shorter. |
d) | The period will first increase then decrease. |
Q.10 |
Which of the following statements about the Moon are true? i. The Moon is the Earth's natural satellite. ii. We can see a full Moon every night. iii. There is no oxygen to support life on Moon. iv. The Moon is twice the size of the Earth. |
a) |
i and iii |
b) | ii and iv |
c) | i, ii and iii |
d) | ii, iii and iv |
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Sample PDF of SilverZone - International Talent Hunt Olympiad (ITHO) PDF Sample Papers for Class 8:
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Answers to Sample Questions from Olympiad Success:
Q.1 : c | Q.2 : c | Q.3 : c | Q.4 : b | Q.5 : c | Q.6 : a | Q.7 : d | Q.8 : c | Q.9 : c | Q.10 : a