Approximately how many litres of water can a camel drink at one time when it finally reaches a water source after a dry period?

Introduction:
Camels are famous desert animals known for their ability to survive long periods without drinking water. When they finally find a water source, they can consume a surprisingly large quantity in a single drinking session. This question tests your awareness of the approximate maximum volume a camel can drink at one time, as given in many GK references.

Given Data / Assumptions:
- The options are up to 60 litres, up to 100 litres, up to 80 litres and up to 120 litres. - We are interested in a single drinking session after a period of dehydration. - The value is approximate, based on average adult camels. - We rely on commonly quoted figures in general knowledge material.

Concept / Approach:
Many zoology and GK sources state that a fully grown camel can drink about 100 litres of water in one session when it has been without water for several days. This rapid intake helps restore its body fluids and prepare it for the next dry spell. While camels may sometimes drink slightly more or less depending on conditions, 100 litres is the rounded figure most often cited in exam oriented material.

Step-by-Step Solution:
Step 1: Recall reading that camels can drink around 100 litres of water at once. Step 2: Compare this remembered value with the nearest option in the list. Step 3: Note that 60 and 80 litres are significantly lower than the common GK figure, while 120 litres is higher than what is usually mentioned. Step 4: Select the option up to 100 litres to match the standard general knowledge statement.

Verification / Alternative check:
Several biology fact compilations and desert adaptation articles mention that camels can drink up to about 100 litres of water in one go. Some sources talk in terms of gallons, which when converted roughly support the litre value used here. These converging references confirm that 100 litres is the best approximate figure for this question.

Why Other Options Are Wrong:
Up to 60 litres: Underestimates the drinking capacity of a fully grown camel after prolonged dehydration. Up to 80 litres: Closer, but still below the widely quoted 100 litre mark in many textbooks. Up to 120 litres: While some extreme estimates may suggest higher values, most exam oriented material settles around 100 litres, so 120 litres is less likely to be the expected answer.

Common Pitfalls:
Learners may try to reason solely from body size and guess a very high number like 120 litres, or they may adopt a conservative guess like 60 litres without recalling the specific fact. Another issue is confusing litres with gallons and misjudging the magnitude. A simple memory aid is to remember the round figure of about 100 litres as the textbook capacity for a camel's single drink.

Final Answer:
A camel can drink up to 100 litres of water at one time after a dry period, according to standard GK sources.