Consider the following statements comparing Mercury and Venus: 1. Mercury has a shorter orbit time than Venus. 2. Venus has a shorter spin time than Mercury. 3. Both are Inner Planets made of rocks. Which of the statements given above is/are correct?

The correct option is (c). Explanation The planets of the Solar System are classified into Inner (Terrestrial) and Outer (Jovian) planets. Their orbital periods (revolution) are determined by their distance from the Sun, while their rotation periods (spin) are intrinsic properties that vary significantly among planets. Statement-wise Analysis: - Statement 1 is Correct: Mercury is the closest planet to the Sun. According to planetary laws of motion, the closer a planet is to the Sun, the faster it revolves and the shorter its orbital path. Mercury completes one orbit around the Sun in approximately 88 Earth days, while Venus takes about 225 Earth days. - Statement 2 is Incorrect: Venus has the longest rotation period (spin time) of any planet in the Solar System. It takes approximately 243 Earth days to complete one rotation on its axis. In comparison, Mercury completes a rotation in about 59 Earth days. Thus, Venus has a significantly longer spin time than Mercury. - Statement 3 is Correct: Mercury, Venus, Earth, and Mars are classified as Inner Planets (or Terrestrial Planets). They are located between the Sun and the asteroid belt and are characterized by high density and a composition primarily of rock and metals. Key Takeaway: Venus is unique in the Solar System because its rotation period (243 days) is longer than its revolution period (225 days), and it rotates in a retrograde direction (east to west).

NCERT Class 6 Geography — Chapter 1: The earth in the solar system

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Consider the following statements comparing Mercury and Venus:

Mercury has a shorter orbit time than Venus.
Venus has a shorter spin time than Mercury.
Both are Inner Planets made of rocks.

Which of the statements given above is/are correct?

Official previous-year question

Verified 1 Aug 2026.

Options

A1 and 2 only
B2 only
C1 and 3 only
D1, 2 and 3

Did you get this right?

Solution

The correct option is (c).

Explanation

The planets of the Solar System are classified into Inner (Terrestrial) and Outer (Jovian) planets. Their orbital periods (revolution) are determined by their distance from the Sun, while their rotation periods (spin) are intrinsic properties that vary significantly among planets.

Statement-wise Analysis:

Statement 1 is Correct: Mercury is the closest planet to the Sun. According to planetary laws of motion, the closer a planet is to the Sun, the faster it revolves and the shorter its orbital path. Mercury completes one orbit around the Sun in approximately 88 Earth days, while Venus takes about 225 Earth days.
Statement 2 is Incorrect: Venus has the longest rotation period (spin time) of any planet in the Solar System. It takes approximately 243 Earth days to complete one rotation on its axis. In comparison, Mercury completes a rotation in about 59 Earth days. Thus, Venus has a significantly longer spin time than Mercury.
Statement 3 is Correct: Mercury, Venus, Earth, and Mars are classified as Inner Planets (or Terrestrial Planets). They are located between the Sun and the asteroid belt and are characterized by high density and a composition primarily of rock and metals.

Key Takeaway: Venus is unique in the Solar System because its rotation period (243 days) is longer than its revolution period (225 days), and it rotates in a retrograde direction (east to west).

Your note

More from Chapter 1: The earth in the solar system

Consider the following statements regarding celestial bodies: 1. All celestial bodies emit their own heat and light in large amounts. 2. Stars are celestial bodies made up of gases. 3. The Sun is a celestial body that reflects the light of other stars. Which of the statements given above is/are correct?

easy

With reference to the phases of the Moon, consider the following statements: 1. The Full Moon can be seen only once in about a month’s time. 2. The New Moon night is also known as Poornima. 3. On Amavasya, the night sky can be watched best if it is a clear night. Which of the statements given above is/are correct?

medium

Which one of the following star groups is a recognizable part of the Ursa Major constellation?

easy

Consider the following pairs regarding the Solar System: Pair | Description 1. Geoid | Earth-like shape 2. Orbit | Circular path of planets 3. Satellite | Celestial body moving around planets 4. Asteroids | Found between Earth and Mars How many of the above pairs are correctly matched?

medium

The term ‘Planet’ is derived from the Greek word ‘Planetai’, which translates to:

easy

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The correct option is (c).

Explanation

Statement-wise Analysis:

Statement 1 is Correct: Mercury is the closest planet to the Sun. According to planetary laws of motion, the closer a planet is to the Sun, the faster it revolves and the shorter its orbital path. Mercury completes one orbit around the Sun in approximately 88 Earth days, while Venus takes about 225 Earth days.
Statement 2 is Incorrect: Venus has the longest rotation period (spin time) of any planet in the Solar System. It takes approximately 243 Earth days to complete one rotation on its axis. In comparison, Mercury completes a rotation in about 59 Earth days. Thus, Venus has a significantly longer spin time than Mercury.
Statement 3 is Correct: Mercury, Venus, Earth, and Mars are classified as Inner Planets (or Terrestrial Planets). They are located between the Sun and the asteroid belt and are characterized by high density and a composition primarily of rock and metals.

Key Takeaway: Venus is unique in the Solar System because its rotation period (243 days) is longer than its revolution period (225 days), and it rotates in a retrograde direction (east to west).