What is the SI unit of power? MCQ with Answer and Explanation

What is the SI unit of power?
A. Joule
B. Watt
C. Pascal
D. Newton
Answer: Option B
Solution (By JKExamLibrary)
The Watt is the SI unit of power, equivalent to one joule per second.

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Practice More Science and Technology Questions

Question #1 Report Error
INSAT satellites are used for:
A. Navigation only
B. Deep space research
C. Military purpose only
D. Communication and weather forecasting

Correct Answer: Option D


Explanation:
INSAT is India's multipurpose communication satellite system.

Question #2 Report Error
What is the speed of light in vacuum?
A. 3 x 10^8 m/s
B. 5 x 10^8 m/s
C. 4 x 10^8 m/s
D. 2.5 x 10^8 m/s

Correct Answer: Option A


Explanation:
The speed of light is approximately 300,000 km/s or 3 x 10^8 m/s.

Question #3 Report Error
What is the chemical formula for water?
A. OH
B. H2O2
C. H2O
D. H2CO3

Correct Answer: Option C


Explanation:
Water consists of two hydrogen atoms and one oxygen atom.