Question

B) Match the following
group A
A)stainless steel
B) hydrogen
C) compass
D) infrasonic sound
group B
A) magnetic needle
B) frequency less than 20 Hz
C) element
D) alloy
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Answer 1

Answer:

a) d

b) c

c) a

d) b

Explanation:

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Answer 2

Answer:

A) = D

B) = C

C) = A

D) = B

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