NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 1: Number System - Multiple Choice Questions
Question 23

Question. 23

Which of the following shows the maximum rise in temperature?

(a)

23° to 32°

(b)

–10° to 1°

(c)

–18° to –11°

(d)

–5° to 5°

Explanation (step by step):

To find the rise in temperature, use:

( ext{Rise}= ext{Final temperature}- ext{Initial temperature})

(a) 23° to 32°

( ext{Rise}=32-23)

(=9^circ)

(b) –10° to 1°

( ext{Rise}=1-(-10))

(=1+10)

(=11^circ)

(c) –18° to –11°

( ext{Rise}=-11-(-18))

(=-11+18)

(=7^circ)

(d) –5° to 5°

( ext{Rise}=5-(-5))

(=5+5)

(=10^circ)

Conclusion: The largest rise is (11^circ), so the answer is (b).