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Subject :NSO    Class : Class 8

Which of these is not a use of ultrasound?

(A) Ultrasonic scanning during pregnancy to check the development of unborn babies

(B) Ultrasonic cleaning to remove the coating of tartar from your teeth

(C) Ultrasound for echo location to detect underwater objects or determine the depth of the water

(D) Ultrasonic treatment of tumours in patients suffering from cancer.

Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

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