Questions and answers for exam Preparation

MCQs

Total Questions : 639 | Page 9 of 64 pages

Question 81. ‘Big Bang theory’ is related to

Origin of the Himalayas
Eruption of Volcanoes
Origin of the Universe
Continental Drifts

Discuss Question

Answer: Option C. -> Origin of the Universe
Answer: (c)

Question 82. What is the time taken by the Earth to complete one rotation on its axis?

24 hr
24 hr 12 min 6 sec
23 hr 56 min 4 sec
23 hr 52 min 4 sec

Discuss Question

Answer: Option C. -> 23 hr 56 min 4 sec
Answer: (c)The time taken by the Earth to complete one rotation on its axis is 23 hr-56 min 4 sec.

Question 83. In which situation Lunar eclipse occurs?

Full Moon
None of these
New Moon
Half Moon

Discuss Question

Answer: Option A. -> Full Moon
Answer: (a)

Question 84. The mass of Jupiter is approximately

one hundredth of the solar mass
half the solar mass
one thousandth of the solar mass
one tenth of the solar mass

Discuss Question

Answer: Option C. -> one thousandth of the solar mass
Answer: (c)
Jupiter's radius is about 1/10 the radius of the Sun, and its mass is 0.001 times the mass of the Sun.
Jupiter's mass is 2.5 times that of all the other planets in the Solar System combined—this is so massive that its barycenter with the Sun lies above the Sun's surface at 1.068 solar radii from the Sun's center.

Question 85. The Astronaut looks the sky in the space

Red
White
Black
Blue

Discuss Question

Answer: Option C. -> Black
Answer: (c)The sky looks black from the space. In space, sunlight or any kind of star light does not have anything from which to bounce off.

Question 86. Which one of the following may have alien life because of a very conductive environment to life?

Europa-The Jupiter’s Moon
Moon-The Earth’s Moon
Mars
Jupiter

Discuss Question

Answer: Option A. -> Europa-The Jupiter’s Moon
Answer: (a)

Question 87. In the form of organism, the Scientific name of Earth is

Green Planet
Harmij
Sita
Cow

Discuss Question

Answer: Option A. -> Green Planet
Answer: (a)

Question 88. Which of the following correctly explains Kepler’s first law of Planetary Motion?

The square of the time period of a planet is proportional to the cube of the semimajor axis of the ellipse
None of the above
The radius vector from the sun to the planet sweeps equal area in equal time
All the planets move in elliptical orbits with the sun at a focus

Discuss Question

Answer: Option D. -> All the planets move in elliptical orbits with the sun at a focus
Answer: (d)Kepler’s First law of Planetary Motion States that all the planets move in elliptical orbits with the sun at a focus.

Question 89. One Astronomical unit is average distance

Between Jupiter and Sun
Between Neptune and Sun
Between Earth and Moon
Between Earth and Sun

Discuss Question

Answer: Option D. -> Between Earth and Sun
Answer: (d)

Question 90. Which of the following statements regarding the duration of day and night is correct?

Difference is least at the Tropics and progressively increases towards the Equator and Poles
Difference is maximum at the Tropics and progressively decreases towards the Equator and Poles
Difference is maximum at the Equator and progressively decreases away from it
Difference is least near the Equator and progressively increases away from it

Discuss Question

Answer: Option D. -> Difference is least near the Equator and progressively increases away from it
Answer: (d)On the equator, the day and night stay approximately the same length all year round.