In this physics based reasoning question on physical quantities and units, select the odd word pair from the given alternatives.

Introduction / Context:
This question belongs to the physical quantities and units category in general science reasoning. Each option is a pair of words that relates a quantity to a unit. Your job is to find the pair that does not follow the same relationship pattern as the others. Understanding which term is the physical quantity and which term is the unit is crucial in school level physics and in many aptitude examinations.

Given Data / Assumptions:
- The pairs are Length – Metre, Temperature – Degree, Ampere – Current, and Work – Joule.- We assume standard physics usage where a quantity has a specific unit.- The order of words in each pair is important for identifying the pattern.

Concept / Approach:
Generally, such questions present pairs where the first word is a physical quantity and the second word is its unit. To find the odd pair, we check whether this structure holds. If three pairs follow the pattern quantity – unit and one pair is reversed as unit – quantity, the reversed pair will be the odd one out. We will analyse each pair using this idea.

Step-by-Step Solution:
Step 1: Length – Metre. Length is a physical quantity. Metre is the standard unit of length. So this pair is quantity – unit.Step 2: Temperature – Degree. Temperature is a physical quantity and degree is used as a unit scale such as degree Celsius or degree Fahrenheit. So this pair also follows quantity – unit.Step 3: Work – Joule. Work is a physical quantity in mechanics, and joule is its SI unit. So this pair again is quantity – unit.Step 4: Ampere – Current. Current is the physical quantity and ampere is the SI unit of electric current. Here, the order is reversed and the unit comes first, followed by the quantity.Step 5: Hence, three pairs are in the format physical quantity – unit, and one pair is in the format unit – quantity.

Verification / Alternative check:
You can list the physical quantities separately: length, temperature, and work form one group, while current is the quantity hidden inside the pair ampere – current. For units, metre, degree, joule, and ampere form another group. Only in the third pair is the unit written first.

Why Other Options Are Wrong:
Length – Metre: Correctly ordered as quantity followed by unit.Temperature – Degree: Again correctly ordered as quantity followed by unit.Work – Joule: Also a proper quantity – unit relationship.

Common Pitfalls:
Some candidates simply look for less familiar words or for the only electrical term and pick it without checking the order. The real logic depends on whether the first term is the quantity and the second term is the unit.

Final Answer:
The odd pair is Ampere – Current because it is written in the order unit – quantity, whereas the other pairs are written as quantity – unit.