Answer: Option A. ->
:
B
Mars is the fourth planet from the Sun and the second smallest planet in the Solar system.
It has a reddish appearance due to which it is known as the "Red Planet".

Answer: Option B. -> (a) - (iv), (b) - (ii), (c) - (iii), (d) -(i)
:
B
- Venus is known as the "rocky" or "terrestrial" planet as itis similar to Earth in composition.
- Saturn is known as the gas giant because it is made up of gases and it is too huge that about 760 earths can fit into it.
- Uranusis known as an ice giant because it is made up of ice and it is too huge that 63 earths can fit into it.
- Pluto is known as the dwarf planet because of its size as it is even smaller than the Earth's moon.

Answer: Option A. -> True
:
A
- The Earth has only has one Moon that revolves around it.
- It is a natural satellite.

Answer: Option B. -> Summer
:
B
- If Northern Hemisphere is tilted towards the Sun then the region present in that hemisphere will receive direct sunlight and will experience summer.
- This is the reason why we experience summer in June and winter in December in Northern Hemisphere.

Answer: Option C. -> Saturn
:
C
The planet Saturn has the most extensive ring system in the Solar System. Its rings are made up of rock, dust and icy material. Pluto does not possess any rings around it. However, Jupiter and Uranus possess a system of rings which are mostly composed of dust and ice. But, they are not as extensive and complex as that of Saturn; rather, are faint.

Answer: Option A. -> 27.3
:
A
The Moon completes one revolution around the Earth in about 27.3 days.

Answer: Option B. -> Venus
:
B
- Venus is very similar to Earth in terms of size and mass. Due to this Earth and Venus do often get called "Planetary Twins".

Answer: Option D. -> Mercury < Earth < Saturn < Jupiter
:
D
- Jupiter is the largest planet of the solar system.
- Saturn is the second largest planet of the solar system.
- Mercury is the smallest planet of the solar system.
So, the correct order of planets in size from smallest to largest will be:Mercury < Earth < Saturn < Jupiter

Answer: Option C. -> Autumn
:
C
- Autumn is one of the four seasons.
- It marks the transition from summer to winter and the temperature starts to drop gradually.
- The shedding of leaves from decidous trees is one of the main features of this season.

Answer: Option D. -> Jupiter
:
D
The sequence shows the order of planets in the solar system. Jupiter is the 5th planet from the Sun after Mercury, Venus, Earth and Mars. It is the biggest planet in our Solar System.