MCQs
Total Questions : 639
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Answer: Option A. -> The length of a year is not an integer number of days
Answer: (a)
The number of days in a year is 365 days and 6 hours (It is not a complete day). Having years of 365 days makes the year too short.
To keep up with the real length of the year maintaining an integer number of days, an extra day is added every four years.
Answer: (a)
The number of days in a year is 365 days and 6 hours (It is not a complete day). Having years of 365 days makes the year too short.
To keep up with the real length of the year maintaining an integer number of days, an extra day is added every four years.
Answer: Option D. -> The size of the shadow of the moon on the earth is small as compared to the cross section of the earth
Answer: (d)
Answer: (d)
Answer: Option A. -> Earth’s albedo
Answer: (a)Albedo is the fraction of solar energy (shortwave radiation) reflected from the Earth back into space.
Answer: (a)Albedo is the fraction of solar energy (shortwave radiation) reflected from the Earth back into space.
Answer: Option A. -> 29.5 years
Answer: (a)
Answer: (a)
Answer: Option A. -> Venus
Answer: (a)Venus is often referred to as our sister planet because of similarities in size, mass, density and volume. It is believed that both planets share a common origin forming at the same time out of a condensing nebulosity around 4.5 billion years ago.
Answer: (a)Venus is often referred to as our sister planet because of similarities in size, mass, density and volume. It is believed that both planets share a common origin forming at the same time out of a condensing nebulosity around 4.5 billion years ago.
Answer: Option A. -> A galaxy is a huge system of billions of stars and clouds of dust and gases
Answer: (a)A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems. A galaxy is held together by gravity. Our galaxy, the Milky Way, also has a super massive black hole in the middle.
Answer: (a)A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems. A galaxy is held together by gravity. Our galaxy, the Milky Way, also has a super massive black hole in the middle.
Answer: Option C. -> Constellation
Answer: (c) The group of stars arranged in a definite pattern is called constellation. In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, which are patterns formed by prominent stars within apparent proximity to one another on Earth’s night sky.
Answer: (c) The group of stars arranged in a definite pattern is called constellation. In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, which are patterns formed by prominent stars within apparent proximity to one another on Earth’s night sky.
Answer: Option B. -> Venus
Answer: (b)
Answer: (b)
Answer: Option D. -> Cislunar
Answer: (d)Space between Earth and Moon is known as Cislunar. Pertaining to the space between the earth and the orbit of the moon.
Answer: (d)Space between Earth and Moon is known as Cislunar. Pertaining to the space between the earth and the orbit of the moon.
Answer: Option D. -> Venus
Answer: (d)Like the other planets in our solar system, Venus rotates about its axis. However, Venus is the only planet that rotates from east to west instead of west to east. This means, that if we lived on Venus, the Sun would appear to rise in the west in the morning, and set in the east in the evening. Venus rotates in what is called retrograde motion.
Answer: (d)Like the other planets in our solar system, Venus rotates about its axis. However, Venus is the only planet that rotates from east to west instead of west to east. This means, that if we lived on Venus, the Sun would appear to rise in the west in the morning, and set in the east in the evening. Venus rotates in what is called retrograde motion.