Sample Paper: National Science Olympiad
Sample Paper: National Science Olympiad
Sample Paper: National Science Olympiad
8 SAMPLE PAPER
2. Which of the following sets of whole numbers has the largest average?
(A) Multiples of 2 between 1 and 101 (B) Multiples of 3 between 1 and 101
(C) Multiples of 4 between 1 and 101 (D) Multiples of 5 between 1 and 101
(E) None of the above.
3. Beena used a calculator to find the product 0.075 × 2.56. She forgot to enter the decimal points. The
calculator showed 19200. If Beena had entered the decimal points correctly, the answer would have
been
(A) 0.0192 (B) 0.192 (C) 1.92 (D) 19.2 (E) None of these.
SCIENCE
6. A Brief History of Time is the title of a book written by :
(A) Albert Einstein (B) Stephen Hawking
(C) Hendrick Lorentz (D) Isaac Newton (E) None of these.
7. Which of the following can produce a virtual image ?
(A) Plane mirror (B) Concave lens (C) Convex lens (D) All of these (E) None of these.
8. A bar magnet with poles N and S marked is freely suspended. Then the end marked N would point towards
(A) The south magnetic pole of the earth (B) The south geographic pole of the earth
(C) The north magnetic pole of the earth (D) The north geographic pole of the earth
(E) None of these.
9. A body immersed in a fluid experiencs an upward thrust which depends on
(A) The weight of the fluid displaced by it (B) The volume of the body
(C) The mass of the body (D) All of these
(E) None of the above.
10. A concave mirror may be used for all except one of the following. This is
(A) A magnifying mirror (B) A torch reflector
(C) A reflecting telescope (D) A car rear view mirror (E) None of these.
11. How does the eye change in order to focus on near or distant objects?
(A) The lens moves in or out (B) The retina moves in or out
(C) The iris changes colour (D) The lens bulges or relaxes (E) None of these.
12. Aluminium is obtained by 2
Class 8
(A) Heating Al 2O with iron
(B) Heating Al 2O
3 with coke
(C) Electrolysing a solution of Al 2O
3 in molten cryolite (D) Electrolysing fused AlCl 3
(E) None of these.
13. Which of the following statements is true with respect to diamond ?
(A) The carbon atoms are connected to each other by metallic bonds.
(B) In the diamond crystal, the carbon atoms are very loosely packed.
(C) Each carbon atom in the crystal is surrounded by four others at the corners of a regular tetrahedron.
(D) It is a very soft substance (E) None of these.
14. Under Indian space programme, the abbreviation GSLV stands for
(A) Geosynchronous Satellite Launch Vehicle (B) Global Satellite Link Vehicle
(C) Geostationary Solar Light Vehicle (D) Geostationary satelite link vehicle
(E) None of the above.
15. If there were no organic life on the Earth, the amount of oxygen in the atmosphere will
(A) Remain unchanged (B) Be approximately hundred percent
(C) Be almost nil (D) Be approximately fifty percent (E) None of these.
16. A vaccine is usually given
(A) At any time (B) At the time disease causing germs enters the body
(C) Before the symptoms of the disease appear
(D) After the disease has appeared (E) None of these.
17. Mark the odd one out.
(A) Colourblindness (B) Hexadactyly
(C) Haemophilia (D) Night blindness (E) None of these.
18. Some basic steps are needed in agricultural practice. Which of the following given as A, B, C, D is the
right sequence?
(1) preparation of the soil (2) harvesting (3) irrigation
(4) broadcasting (5) tilling (6) weeding
(7) manuring.
(A) 1, 5, 4, 7, 6, 3, 2 (B) 1, 3, 5, 6, 4, 2, 7
(C) 1, 3, 5, 2, 4, 6, 7 (D) 1, 5, 6, 2, 4, 7, 3 (E) None of these.
19. What does a disc fragmentor do?
(A) It is a utility program that facilitates compression of files so that they occupy less storage
space
(B) It is a utility program that minimizes the time taken by the hard disk optical reader to read up ‘split’
files. It does so by rearranging the files and free space on your computer so that files are stored
in contiguous memory.
(C) It is a utility program that facilitates the backing up of the disk
(D) It is a utility program used for creating and editing text file
(E) None of the above.
20. Isotopes of an element have
(A) Same no. of neutrons (B) Same no. of electrons
(C) Equal mass number but different atomic no.
(D) Equal atomic number but different mass no. (E) None of these.
ANSWER KEY
1. (D) 2. (D) 3. (B) 4. (A) 5. (B) 6. (B) 7. (D) 8. (A) 9. (A) 10. (D)
11. (D) 12. (C) 13. (C) 14. (A) 15. (A) 16. (C) 17. (D) 18. (A) 19. (B) 20. (D)
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Class 8