SilverZone - IOS PDF Sample Papers for Class 8

Class 8 sample paper & practice questions for International Olympiad of Science (IOS) level 1 are given below. Syllabus for level 1 is also mentioned for these exams. You can refer these sample paper & quiz for preparing for the exam.


Sample Questions from Olympiad Success:

Q.1 Q.2 Q.3 Q.4 Q.5 Q.6 Q.7 Q.8 Q.9 Q.10

Q.1

Earthquakes can occur because of ________. (NSO, 2013)

a)

Movement of tectonic plates

b)

Volcanic eruption

c)

Mine blasts

d)

All of these

Q.2

A bomb explodes on the moon. How long will it take for the sound to reach the earth?

a)

10 seconds

b)

1000 seconds

c)

1 day

d)

Sound will not be heard

Q.3

Which of the following resources can replenish themselves by quick recycling and replacement within a reasonable time, if managed properly?

a)

Coal

b)

Soil

c)

Natural gas

d)

Sunlight

Q.4

Embellishing the Truth occurs when a person adds fictitious details or exaggerates facts or true stories. Which situation below is the best example of Embellishing the Truth?

a)

Isabel goes to the theater, and the next day,she tells her coworkers she thought the playwas excellent.

b)

The realtor describes the house, which iseleven blocks away from the ocean, asprime waterfront property.

c)

During the job interview, Fred, who hasbeen teaching elementary school for tenyears, describes himself as a very experiencedteacher.

d)

The basketball coach says it is likely thatonly the most talented players will get a collegescholarship.

Q.5

The bulb of an electric tester does not light up at all. What do you think the material is?

a)

Metal

b)

LED

c)

Conductor

d)

Insulator

Q.6

The interlocking of two surfaces give rises to ___________.

a)

Electrostatic force

b)

Magnetic force

c)

Frictional force

d)

Gravitational force

Q.7

What happens when electric current is made to flow through a conductor?

a)

Some amount of electrical energy is converted into heat energy.

b)

Some amount of electrical energy is converted into mechanical energy.

c)

Some amount of mechanical energy is converted into electrical energy.

d)

Some amount of heat energy is converted into electrical energy.

Q.8

 A student examined a particular plant cell through its various stages of growth. After making various measurements, he realised that the increase in cell size was largely due to enlargement of the central vacuole rather than an increase in the amount of cytoplasm. Why might this be an advantageous strategy for the cell? (NSO, 2015)

a)

Enlarging the cytoplasm would make the cell less turgid.

b)

Enlarging the vacuole would make it unnecessary for the cell wall to stretch.

c)

Enlarging the vacuole would minimise any lowering of the surface area - volume ratio of the cytoplasm.

d)

All of these

Q.9

How are Paramoecium and Amoeba are similar?

a)

Unicellular

b)

Does not have a nucleus

c)

Reproduce by binay fission

d)

Both a and c

Q.10

Chemical compound whose molecules ionize into positively and negatively charged ions in a solution are called __________.

a)

Electrolyte

b)

Non-electrolyte

c)

Molten metal

d)

Salt solution

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Answers to Sample Questions from Olympiad Success:

Q.1dQ.2dQ.3bQ.4bQ.5dQ.6cQ.7aQ.8cQ.9dQ.10a

Answers to Sample Questions from Olympiad Success:

Q.1 : d | Q.2 : d | Q.3 : b | Q.4 : b | Q.5 : d | Q.6 : c | Q.7 : a | Q.8 : c | Q.9 : d | Q.10 : a

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