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Test exam

1 / 20

Which of the followings exert pressure?

2 / 20

If density of a metal is 8.2 g/cc, its relative density is:

3 / 20

If an electron and a proton having same momenta enter perpendicular to a magnetic field, then

4 / 20

The atmospheric pressure is due to the:

5 / 20

A wave is moving in air with a velocity of 340 m/s. Calculate the wavelength if its frequency is 512 vibrations/sec.

6 / 20

Which information in the periodic table of elements tells the total number of protons and neutrons of an atom?

7 / 20

The energy stored in wound watch spring is

8 / 20

If a body moves with uniform velocity, then

9 / 20

What part of the moon does the Sun always illuminate?

10 / 20

What is the primary process behind the movement of tectonic plates away from each other along divergent margins?

11 / 20

A potential difference of 10V is needed to make a current of 0.02A flow through a wire. What potential difference is needed to make a current of 250mA flow through the same wire?

12 / 20

A bolt is dropped from a bridge under construction, falling 90m to the valley below the bridge. What is its speed when it reaches the valley beneath the bridge?

13 / 20

Which of the followings minimizes the transference of heat in a thermos flask?

1. Conduction
2. Convection
3. Radiation

14 / 20

Which element is a nonmetal?

15 / 20

Which of the following statements correctly describes a magma chamber?

16 / 20

Heat loss occurs during flow of current in a conducting wire because

17 / 20

Which of the following is not a mixture?

18 / 20

With the increase in temperature, the frequency of the sound from an organ pipe

19 / 20

What property of metal makes it a good material for electrical wirings?

20 / 20

Edmond Halley was able to predict that a comet seen in 1683 would return in 1758. How did Halley calculate the next arrival of this comet?

Dear student,

You are about to start your exam, therefore, please pay attention to the followings:

– you are allowed to use calculators,

– you are not allowed to use any other website except www.copernicusolympiad.us,

– time allocated for the exam is 70 minutes,

– you can leave a question empty and then come back to that question again,

– if you cannot finish in time please do not panic, your results are being saved automatically,

– if supervisor reports that you cheated on exam, your exam result will be cancelled,

– to qualify to the Global Round, you must score 30% or higher,

GOOD LUCK on exam.