Question

Match List-I with List-II

List-I (Instrument) & List-II (Used for Measurement of)
(A) Liquid Limit Device & (I) Wind speed
(B) Pycnometer & (II) Soil Plasticity
(C) Beufort scale & (III) Depth of water table
(D) Piezometer & (IV) Specific Gravity of soil

• (A) - (I), (B) - (II), (C) - (III), (D) - (IV)
• (A) - (II), (B) - (IV), (C) - (I), (D) - (III)
• (A) - (I), (B) - (II), (C) - (IV), (D) - (III)
• (A) - (III), (B) - (IV), (C) - (I), (D) - (II)

Hint:

Connecting Pycnometer with soil specific gravity (B - IV) or Piezometer with water table depth (D - III) is an efficient way to narrow down options in matching questions.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Standard instruments and scales are used to measure physical, mechanical, and environmental properties in soil physics, geology, and meteorology.

Step 3: Detailed Explanation:
Let us match each instrument from List-I with its correct measurement application:
- (A) Liquid Limit Device (Casagrande apparatus): This mechanical device is used in soil mechanics to determine the liquid limit of soil, which is a key parameter defining Soil Plasticity and behavior. Thus, (A) matches with (II).
- (B) Pycnometer: This is a laboratory vessel used to measure the volume of a given mass of soil, which is used to calculate the Specific Gravity of soil particles. Thus, (B) matches with (IV).
- (C) Beaufort scale: This is an empirical scale that relates wind speed to observed conditions at sea or on land, used to estimate Wind speed. Thus, (C) matches with (I).
- (D) Piezometer: This is an open pipe or tube installed in the ground to measure hydrostatic pressure, which is used to determine the Depth of water table or groundwater levels. Thus, (D) matches with (III).
Combining these matches gives: (A) - (II), (B) - (IV), (C) - (I), (D) - (III).

Step 4: Final Answer:
The correct matching sequence corresponds to option (B).