|1. Two musical instruments are out of
tune. If they are both supposed to be playing the same note at the
same time, the wavering sound can be explained by:
a) resonance b) interference* c) polarization d) modulation e)
2. What is the value of 100^2 / 100^3 ?
Answer: 1 / 100
3. I am an element. In my nucleus I have 2 protons, and 2 neutrons.
What is my name?
4. The gall bladder is a storage vessel for:
a) insulin b) glycogen c) pepsin d) bile*
5. Which mineral is absorbed from the blood stream primarily
by the thyroid gland?
a) Iodine* b) Iron c) Calcium d) Potassium
6. In binary, what is the value of 1101 - 1010?
7. What name is given to the erasable semiconductor chip used
to temporarily store computer programs?
Answer: Random Access Memory (RAM)
8. A nucleus of lithium might change by any of the named processes
except one. Name the process that is least likely to occur.
a) beta decay b) positron emission c) alpha decay d) fusion e)
9. In astronomy, various units of measurement are used. One such
unit is the "parsec", a unit of distance. A parsec is
approximately thirty million million kilometers, but that is not
its definition. What is the definition on a parsec?
Answer: A parsec is that distance from the solar system which
causes the sun and the earth to subtend an angle of one second.
10. I am an element. I am an isotope of hydrogen. In my nucleus
I have one proton and one neutron. What is my name?
11. A nucleus of an unstable isotope of Uranium might change by
any of the named processes except one. Name the process that is
least likely to occur.
a) beta decay b) positron emission c) alpha decay d) fusion*
12. Taking the earth as a whole - from its centre to the outer
fringes of its atmosphere, the most abundant element by far, in
terms of mass, is believed to be iron. Again, in mass terms, what
is the next most abundant element?
13. Continuing in the approach of the previous question, what
is, in mass terms, the third most abundant element in the Earth?
14. A singer can set an undamped note on the piano vibrating
by his or her voice by:
a) resonance* b) interference c) polarization d) modulation e)
15. A person who is known as the universal recipient has which
16. An astronomical unit has, precisely, that name, the "Astronomical
Unit". What is the definition of the "Astronomical Unit"?
Answer: The Astronomical Unit is the average distance of the
Earth from the sun.
17. What is the value of 3.27 X 3.67 ?
18. What name is given to the cultivation of plants in solutions
of mineral salts?
19. Two plane mirrors are arranged perpendicularly. If you stand
between the mirrors, how many images of yourself will you see?
20. When large numbers of Amino Acids polymerise into one molecule,
what is the general name of that molecule?
Answer: Polypeptide (accept protein)
21. What class of substance has the general formula: Cx(H20)4?
22. How much matter would have to be changed to energy if 9 J
of energy were released by the conversion of energy to matter?
Answer: 10^(-16) kg.
23. What is the name of the process that allows materials to
enter or leave plant cells?
Answer: diffusion (or osmosis)
24. What name is given to a semiconductor memory chip used to
store programs as a permanent part of the computer system?
Answer: Read-only Memory (ROM)
25. What is the value of log 5 25?
26. A circuit has a total resistance of 100 ohms when a 10 volt
source is used. Calculate the current.
Answer: 0.1 ampere or 100 mA (milliamperes)
27. A product of fermentation by yeast is:
a) alcohol* b) oxygen c) nitrogen d) starch
28. What is the name of the class of bodies which orbit the Sun
like planets, but are in general deemed too small to be called
29. By what name is a mixture of charcoal, sulphur and potassium
nitrate commonly known?
30. A thin convex lens produces an image that is 100 cm from
the centre of the lens. If the focal length is 50 cm, where is
the object located?
Answer: 100 cm (from the lens)
31. One of the milestone events in astronomy was the occasion
when, in 1609, a man turned a telescope he had made in the direction
of Jupiter, and saw, for the first time in history, some of the
moons which accompany Jupiter. Who was that man?
Answer: Galileo (Galilei)
32. A matrix of the protein collagen, calcium carbonate and calcium
hydroxyphosphate is found extensively in the human body. What
is the common name of that matrix?
33. A concave mirror produces an inverted image that is the same
size as the object. If the object is 50 cm from the vertex, then
what is the focal length of the mirror?
34. If nitroglycerine is mixed with diatomaceous earth, what
is the common name of the resultant mixture?
35. Diethyl ether, chloroform and nitrous oxide all have a property
which has made them a great boon to mankind. What property is
Answer: They are all anaesthetics
36. A person who has (B) blood type can donate blood to the following
a) A and 0 b) B and AB* c) A and 0 d) 0 and AB
37. What gas is a waste product of photosynthesis?
38. If you stand between two plane mirrors that are parallel
to each other, how many images will you see?
Answer: an infinite number
39. Name the nine planets of our solar system, in the correct
order, starting with the one nearest to the sun.
Answer: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus,
Neptune, and Pluto.
Note: Since Neptune is sometimes further from the sun than Pluto,
accept the last two in either order.
40. If log x 27 = 3, what is the value of x?
41. The plasma membrane of a cell forms arms of cytoplasm which
engulf food and take it into the cell by:
a) Pinocytosis b) Diffusion c) Osmosis d) Phagocytosis*
42. Liberation of energy in cells without consumption of oxygen
a) aerobic b) anabolic c) anaerobic* d) allosteric
43. In binary, what is the value of 111 + 1010?
44. Chlorophyll consists of a large organic molecule associated
with a metal. Which metal is that?
45. I am an American, but I worked in England when I helped solve
the puzzle of the DNA structure. I was 24 years old at the time.
Later, in 1962, I received the Nobel Prize. Who am I?
Answer: James Watson
46. A single NASA vehicle has already photographed Jupiter, Saturn
and Uranus and is expected to fly over the north pole of Neptune
in August 1989. Which vehicle is that?
Answer: Voyager 2 (Note: Voyager"or "Voyager 1"
47. What name is given to all of the electrical and mechanical
parts that make up a computer system?
48. Which cells in a plant are the food-conducting cells?
Answer: phloem cells
49. If the mass of the Moon is 1 unit, them what is the approximate
mass of the earth: 3, 9, 27, or 81 units?
Answer: 81 units (81.3 to be precise)
50. What name is given to the set of instructions that make a
computer operate in the required manner?