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Celestial Objects

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Which of the following given objects is not a celestial object?

  1. Stars

  2. Planets

  3. Comets

  4. Satellites

  5. Aircraft


Correct Option: E
Explanation:

Yes, it is the correct answer. Aircraft are human made. They are not celestial object.

Which of the following statements is/are false regarding the only natural satellite of Earth?

(a) It is our nearest neighbour in the Universe. (b) There are craters and mountains on the moon. (c) There is atmosphere on the moon like Earth. (d) Moon appears similar every day.

  1. Only a and b

  2. Only b

  3. Only a and c

  4. Only c and d

  5. Only b and d


Correct Option: D
Explanation:

Yes, it is the correct answer. Both the statements are false. There is no atmosphere on the moon. The moon does not appear similar every day.

Within a period of 15 days from the new moon day, the moon appears like a

  1. crescent

  2. full circle

  3. semicircle

  4. a circle with some portion cut off

  5. again a new moon day


Correct Option: B
Explanation:

Yes, it is correct. Within about 15 days from the new moon day, the moon appears as a complete circle. This is called the full moon.

What is common between the Sun and Alpha Centauri?

  1. Both are equidistance from Earth.

  2. Both are of same size.

  3. Both are stars.

  4. Both are part of a common constellation.

  5. All of these


Correct Option: C
Explanation:

Yes, it is the correct answer. Both the celestial bodies are stars.

Which of the following is the correct reason behind the appearance of the moon's phases?

  1. The periods of rotation and revolution of the moon are the same.

  2. Only one surface of the moon is visible from the Earth.

  3. The sunlit portion of the moon is visible to us.

  4. Options 1 and 2.

  5. Options 1, 2 and 3.


Correct Option: E
Explanation:

Yes, this is the correct answer. All the options are true.

Why are the stars not visible during day time?

  1. They go deep inside

  2. The sunlight is so bright during the day that we are unable to see the stars

  3. The colour of stars fades away

  4. They travel to the place where it is night

  5. None of these


Correct Option: B
Explanation:

Yes, it is the correct answer. The stars are not visible during the day because the sunlight is too bright during the day that we are unable to see the stars. 

Which of the following planets appears to be red in colour?

  1. Venus

  2. Earth

  3. Mars

  4. Jupiter

  5. Saturn


Correct Option: C
Explanation:

Yes, it is correct, Mars appears red in colour.

Match the following:

1 Evening star a Fake star
2 Pole star b Constellations
3 Shooting star c West
4 Big dipper d North
  1. 1 - d, 2 - c, 3 - a, 4 - b

  2. 1 - a, 2 - d, 3 - b, 4 - c

  3. 1 - c, 2 - d, 3 - a, 4 - b

  4. 1 - b, 2 - d, 3 - a, 4 - c

  5. 1 - b, 2 - c, 3 - d, 4 - a


Correct Option: C
Explanation:

Yes, it is correct, as all are matched correctly.

Which of the following celestial bodies revolves around the planets?

  1. Comet

  2. Satellite

  3. Meteorite

  4. Star

  5. Mercury


Correct Option: B
Explanation:

Yes, it is correct. The satellites orbit the planets. The Moon is a natural satellite.

Water filtration is done by water filters, one of which is RO filter. What is the full form of RO?

  1. Reverse Osmosis

  2. Real Output

  3. Reverse Output

  4. Real Osmosis

  5. None of these


Correct Option: A
Explanation:

Yes, it is correct. Some costly water filters work on reverse osmosis and hence they are called RO filters.

Which of the following given planets is the farthest from the sun?

  1. Mars

  2. Pluto

  3. Neptune

  4. Venus

  5. Mercury


Correct Option: C
Explanation:

Yes, it is correct. Neptune is the eighth and the farthest planet from the sun in the solar system.

Match the following:

1 Green house a Chlorofluorocarbons
2 Global warming b Suspended pariculate matter
3 Harmful refrigerant c Methane
4 Stone quarries d Carbon-dioxide
  1. 1 - d, 2 - c, 3 - a, 4 - b

  2. 1 - c, 2 - d, 3 - a, 4 - b

  3. 1 - c, 2 - d, 3 - b, 4 - a

  4. 1 - c, 2 - a, 3 - d, 4 - b

  5. 1 - d, 2 - c, 3 - b, 4 - a


Correct Option: B
Explanation:

Yes, it is the correct answer, as all are matched correctly. Methane is a greenhouse gas, Carbon dioxide is one of the gases causing global warming, chlorofluorocarbons is a harmful refrigerant and suspended particulate matter is generated in stone quarrying process.

Which of the following statements is/are true?

a) The waxing phase of the moon is followed by the waning phase. b) The waning phase of the moon is followed by the waxing phase. c) The waxing phase of the moon and the waning phase of the moon go simultaneous to each other. d) During waning phase, the full moon reduces in size. e) During waxing phase, the size of moon increases.

  1. Only a and d

  2. Only b and e

  3. Only c

  4. Only a and e

  5. Only b and d


Correct Option: A
Explanation:

Yes, both the sentences are true. Hence, it is the correct answer. The waxing phase of the moon is followed by the waning phase. 

Which of the following processes is used to kill germs in the water?

  1. Evaporation

  2. Chlorination

  3. Boiling

  4. Options 2 and 3

  5. All of these


Correct Option: D
Explanation:

Yes, it is the correct option.

Which of the following gases is/are responsible for greenhouse effect?

  1. Carbon dioxide and sulphur dioxide

  2. Methane

  3. Nitrogen and hydrogen

  4. Carbon dioxide and methane

  5. Carbon dioxide, sulphur dioxide and methane


Correct Option: E
Explanation:

Yes, it is the correct answer. Carbon dioxide, sulphur dioxide and methane are responsible for the greenhouse effect.

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