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UPSC 2021: In a pressure cooker, the temperature at which the food is cooked depends mainly upon which of the following? 1. Area of the hole in the lid 2. Temperature of the flame 3. Weight of the lid Select the correct answer using the code given below:
(a)1 and 2 only
(b)2 and 3 only
(c)1 and 3 only
(d)1, 2 and 3
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Not attemptedCorrect Answer: (c) 1 and 3 only
Cooking temperature inside a pressure cooker is set by the internal steam pressure. That pressure depends on (i) the cross-sectional area of the vent hole, which decides how much steam can escape, and (iii) the weight/regulator that seals the vent; the flame only affects how fast that pressure is reached, not the equilibrium temperature. Therefore statements 1 and 3 are relevant. ([upscsociology.in](https://upscsociology.in/category/prelims-solution/prelims-2021-gs-solution/?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 2021 Science & Technology question?▼
The correct answer is option (c): 1 and 3 only. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Physics question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2021, GS Paper 1, as Question 68. It falls under Science & Technology > Physics.
What is the difficulty level of this UPSC question?▼
This question is rated "moderate". It requires sound conceptual understanding of the topic.
How many UPSC Prelims questions have been asked from Physics?▼
UPSC has asked 104 questions from Physics (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.