Find answers to the Multiple alternative queries (MCQs) at the bottom of the page.
1. Faster than a speeding bullet, more powerful than a supernova, able to crush small planet with a single swipe these are primordial, angel-hair thin cracks in the structure of the space. Name them.
- (A) Cosmic strings
- (B) Saturn rings
- (C) Neptune rings
- (D) Black holes
2. When Pakistan launched its second telecommunication satellite Badar 'B'?
- (A) In 1996
- (B) In 1997
- (C) In 1995
- (D) In 1998
3. Atmosphere of the Earth is made up of different spheres. In which part of the atmosphere commercial aircraft usually fly?
- (A) Thermosphere
- (B) Stratosphere
- (C) Troposphere
- (D) Mesosphere
4. Why do we see but only one face of the Moon always?
- (A) Because the Moon has phases
- (B) Because the Moon is not spinning around it'S axis.
- (C) Because it is in between the Sun and the Earth
- (D) Because it has synchronous revolution and spin.
5. The Sun rises on the North Pole on the 21st March and this pole remains in light till what date?
- (A) 23rd September
- (B) 21st September
- (C) 22nd June
- (D) 22nd December
6. What was the approximate temperature of the Universe at the time of its birth?
- (A) 1028 oC
- (B) 1020 oC
- (C) 1010 oC
- (D) 105 oC
7. Name the gas which was discovered on the Sun about 125 years ago during eclipse watching.
- (A) Hydrogen
- (B) Helium
- (C) Nitrogen
- (D) Argon
8. After how much time, a total solar eclipse passes over a particular spot on the Earth?
- (A) 100 years after
- (B) 200 years after
- (C) 250 years after
- (D) 360 years after
9. About how much energy is radiated per square meter of Sun's surface into space?
- (A) 64 thousand watts
- (B) 64 hundred watts
- (C) 64 hundred thousand watts
- (D) 64 million watts
10. What is the approximate age of the Sun?
- (A) 6.4 thousand years
- (B) 6.4 billion years
- (C) 6.4 million years
- (D) 6.4 hundred thousand years
11. How many times is Jupiter's gravity greater than that of the Earth?
- (A) 64 times
- (B) 164 times
- (C) 264 times
- (D) 364 times
12. About how many years ago, the first solar eclipse was officially recorded by man?
- (A) 1,000 years
- (B) 2,000 years
- (C) 3,000 years
- (D) 4,000 years
13. What is the maximum possible duration of a total solar eclipse?
- (A) 3 minutes and 30 seconds
- (B) 7 minutes and 20 seconds
- (C) 6 minutes and 30 seconds
- (D) 5 minutes and 20 seconds
14. Why a solar eclipse cannot be seen from all parts of the world?
- (A) Because it depends upon the latitude of the observer.
- (B) Because it depends upon the direction of the wind.
- (C) Because it depends upon the speed of the earth.
- (D) None of the above.
15. The equator of the moon is inclined 6 degrees to the plane of its orbit around the Earth therefore 100 percent of the moon's surface is not visible at different times from the Earth. What percentage of moon's surface is visible?
- (A) 59%
- (B) 49%
- (C) 39%
- (D) 69%
16. The interval between two total solar eclipses is called the Saros cycle. What is it's duration?
- (A) 6 years
- (B) 10 years
- (C) 18 years
- (D) 11 years
17. The moon moves Eastward in its orbit at about 3400 km per hour. Approximately what is the speed of rotation of the Earth at it's equator?
- (A) 700 km per hour
- (B) 1700 km per hour
- (C) 2700 km per hour
- (D) 3700 km per hour
18. How many maximum number of solar eclipses can occur in one calendar year?
- (A) Seven
- (B) Five
- (C) Four
- (D) One
19. Name the instrument which is used to measure the speed of an aircraft relative to the speed of sound.
- (A) Speedometer
- (B) Altimeter
- (C) Telemeter
- (D) Machmeter
20. A layer of Ozone in the stratosphere protects the Earth by blocking most of the Sun's harmful ultraviolet light. These are high energy radiations. Which of the following can have the potential effects of UV light?
- (A) Eyes
- (B) Skin
- (C) Crops
- (D) All the above.
- 1. A
- 2. C
- 3. C
- 4. D
- 5. A
- 6. A
- 7. B
- 8. D
- 9. D
- 10. B
- 11. C
- 12. D
- 13. B
- 14. A
- 15. D
- 16. C
- 17. B
- 18. A
- 19. D
- 20. B
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