Neco 2021 Geography Question 23

Practice objective / multiple choice question 23 from the 2021 Neco Geography examination.

Neco 2021 Geography Objective / Multiple Choice Medium Difficulty
Question 23 NECO • 2021 • GEOGRAPHY • objective

An air parcel at sea level has temperature \(30^{\circ}\text{C}\) and dew‑point \(20^{\circ}\text{C}\). It rises dry adiabatically at \(9.8^{\circ}\text{C km}^{-1}\) until saturation, then moist adiabatically at \(6^{\circ}\text{C km}^{-1}\). (i) Find the altitude of the cloud base (LCL) using \(\text{LCL (m)} = 125\,(T - T_d)\). (ii) Determine the parcel temperature at an altitude of \(2\text{ km}\).

Answer Options

Correct Answer A. Cloud base = 1250 m; Temperature at 2 km ≈ 13.3°C
B. Cloud base = 1000 m; Temperature at 2 km ≈ 12.5°C
C. Cloud base = 1500 m; Temperature at 2 km ≈ 13.3°C
D. Cloud base = 1250 m; Temperature at 2 km ≈ 15.0°C
Correct Answer
A
Correct Option:
Cloud base = 1250 m; Temperature at 2 km ≈ 13.3°C

About This Question

This is Neco 2021 Geography Question 23. It is one of the objective questions from the 2021 Neco Geography examination.

Difficulty level: Medium .

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