Often called Earth's twin, Venus is studied for its extreme runaway greenhouse effect. This topic covers its dense carbon dioxide atmosphere, sulfuric acid clouds, unique clockwise rotation, and geological topography.
Correct Answer:
(B) Mercury and Venus
There are only two planets in our solar system having no natural satellite which are - (i) Mercury (ii) Venus. The planet having satellite are as follows –
Earth-1 Mars-2
Jupiter-79 Saturn-82
Uranus-27 Neptune-14
In addition to these, Pluto (Dwarf Planet) has five (5) known satellites.
Ques: 2
The hottest planet of the solar system is –
Correct Answer:
(B) Venus
Average temperature of all Planet in our Solar System is as follows –
Mercury = 167ºC
Venus = 464ºC
Earth = 15ºC
Mars = – 63ºC
Jupiter = –110ºC
Saturn = –140º C
Uranus = –195ºC
Neptune = –200ºC
Thus, Venus is the hottest planet in our Solar System and Neptune is the coldest planet.
Ques: 3
Which planet is known as the 'Evening Star'?
Correct Answer:
(C) Venus
Venus is known the Evening Star and also as the Morning Star while Mars is called the Red Planet, and Saturn is one which has rings known as Saturn’s Rings.
Ques: 4
Which one of the following is known as 'Morning Star'?
Correct Answer:
(B) Venus
Venus is called as 'Morning Star' and 'Evening Star' as it is the brightest planet of all. Venus is also called 'twin sister' of earth as Venus and earth are almost the same size and same mass and have a very similar composition.
Ques: 5
Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R).
Assertion (A) : Existence of human life on Venus is highly improbable.
Reason (R) : Venus has an extremely high level of carbon dioxide in its atmosphere.
Code :
Correct Answer:
(A) Both A and R are true, and R is the correct explanation of A
Ques: 6
The planet which is called twin sister of the earth is –
Correct Answer:
(B) Venus
Venus is called sister planet or twin planet of Earth. Venus is also known as the brightest planet, the Morning Star and the Evening Star etc.
Ques: 7
The Spacecraft “Magellan” was sent to –
Correct Answer:
(D)
Venus
The Magellan spacecraft was sent to Venus on a surface Mapping mission. The spacecraft was launched on 04 May 1989, which arrived at Venus orbit on 10 August, 1990. It was named after Portuguese explorer of the sixteenth century, Ferdinand Magellan.