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Question

Which of the followings can be used as a tester along with a battery to check the conductivity of a liquid?

निम्नलिखित में से किसका उपयोग किसी द्रव की चालकता की जाँच करने के लिए एक बैटरी के साथ संपरीक्षित्र के रूप में किया जा सकता है?

(A) A bulb connected to a conducting wire

चालक तार से संयोजित एक बल्ब

(B) An LED connected to a conducting wire

चालक तार से संयोजित एक LED

(C) A conducting wire wrapped around a magnetic needle

चुम्बकीय सुई के चारों ओर लपेटा गया एक चालक तार

The correct option is

सही विकल्प है

A
Only (A)

केवल (A)
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B
Only (C)

केवल (C)
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C
Both (B) and (C)

(B) तथा (C) दोनों
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D
All (A), (B) and (C)

(A), (B) तथा (C) सभी
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Solution

The correct option is D All (A), (B) and (C)

(A), (B) तथा (C) सभी

Solution

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