Question

Match the LIST-I with LIST-II 

LIST-I		LIST-II
(Liquid)		(Viscosity at room temperature Approximate) (Pa . s)
A	Air	I	\(10^{-5}\)
B	Water	II	\(10^{-3}\)
C	Olive Oil	III	\(10^{-1}\)
D	Liquid Honey	IV	\(10^{1}\)

• A. A - III, B - IV, C - I, D - II
• B. A - I, B - II, C - III, D - IV
• C. A - II, B - III, C - I, D - IV
• D. A - I, B - IV, C - I, D - III

Hint:

For matching questions with ordered values, first rank the items in one list (e.g., least viscous to most viscous). Then, rank the values in the other list. The matching should then be straightforward.

Answer 1

The Correct Option is B

Step 1: Understand viscosity. Viscosity is a measure of a fluid's resistance to flow. A higher value means the fluid is "thicker".

Step 2: Rank the substances in LIST-I by their expected viscosity, from lowest to highest. Air (a gas) will have the lowest viscosity. Water is a common reference fluid, much more viscous than air. Olive Oil is noticeably more viscous than water. Liquid Honey is extremely viscous and flows very slowly. The correct order of increasing viscosity is Air \textless Water \textless Olive Oil \textless Liquid Honey.

Step 3: Rank the viscosity values in LIST-II from lowest to highest. $10^{-5}$ \textless $10^{-3}$ \textless $10^{-1}$ \textless $10^{1}$.

Step 4: Match the ranked lists.
A. Air \textrightarrow I. $10^{-5}$ Pa.s
B. Water \textrightarrow II. $10^{-3}$ Pa.s (The viscosity of water is approximately 1 mPa.s or 0.001 Pa.s)
C. Olive Oil \textrightarrow III. $10^{-1}$ Pa.s
D. Liquid Honey \textrightarrow IV. $10^{1}$ Pa.s
The correct set of matches is A-I, B-II, C-III, D-IV.