"Consider the following pairs :

How many above mentioned pairs are correctly matched ?

Correct option is B

The correct answer is Only two.
• Uranus: Approximately 17 hours and 14 minutes — Correct.
• Neptune: Approximately 16 hours and 7 minutes — Correct.
• Saturn: Approximately 10 hours and 40 minutes (not 25 hours 40 minutes) — Incorrect.
• Mars: Approximately 24 hours and 37 minutes (not 9 hours 56 minutes) — Incorrect.
Thus, only two pairs (Uranus and Neptune) are correctly matched.

Information Booster:
• Uranus has a retrograde rotation with a tilt of about 98 degrees.
• Neptune has a rapid rotation period similar to Uranus.
• Saturn rotates very quickly, with a day lasting about 10 hours and 40 minutes.
• Mars has a day close to Earth's, around 24 hours and 37 minutes.
• The rotation speed of planets influences their flattening and equatorial bulge due to centrifugal force.
Additional Knowledge:
• Uranus (I): Correctly matched at 17 hours 14 minutes.
• Neptune (II): Correctly matched at 16 hours 7 minutes.
• Saturn (III): As it takes about 10 hours and 40 minutes to complete one rotation.
• Mars (IV): with a day lasting approximately 24 hours and 37 minutes, similar to Earth.