Class 9 Mathematics · Chapter 1 · Test 4
Real Number Applications
33 MCQs
33 questions · 30 min · 33 marks
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Sample questions
The first 5 of 33. Try each one, then tap to see the answer.
Question 1
Which of the following is an application of real numbers?
- ATemperature measurement
- BBanking calculations
- CEngineering calculations
- DAll of these
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Answer: D
Real numbers are used in measurement finance science and engineering.
Question 2
Which formula converts Celsius to Kelvin using the textbook approximation?
- AK=C-273
- BK=C+273
- CK=273-C
- DK=C/273
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Answer: B
The textbook uses K approximately equal to Celsius temperature plus 273.
Question 3
Which formula converts Celsius to Fahrenheit?
- AF=5C/9+32
- BF=9C/5+32
- CF=C+273
- DF=32-C
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Answer: B
The Fahrenheit conversion is F equals 9C divided by 5 plus 32.
Question 4
Which formula converts Fahrenheit to Celsius?
- AC=5(F-32)/9
- BC=9(F-32)/5
- CC=F+32
- DC=F-273
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Answer: A
Subtract 32 from Fahrenheit and multiply by five-ninths.
Question 5
What is 0 degrees Celsius in Fahrenheit?
- A0 degrees
- B32 degrees
- C100 degrees
- D273 degrees
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Answer: B
Using F equals 9C divided by 5 plus 32 gives 32 degrees Fahrenheit.
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