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2
Q:

In the Modern Periodic Table, a zig-zag line separates

A) metals from halogens B) non-metals from metalloids
C) metals from non-metals D) metals from metalloids

Answer:   C) metals from non-metals



Explanation:
Subject: Chemistry
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The percentage of nitrogen in the air is about

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Answer & Explanation Answer: D) No option is correct

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Which of the following group is NOT Dobereiner Triads?

 

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Answer & Explanation Answer: B) N, P Au

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Answer & Explanation Answer: B) Phosphorus

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Air ___________________ are the substances which contaminate the air.

A) Reactants B) Irritants
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Answer & Explanation Answer: D) Pollutants

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By using which foam the Researchers from Indian Institute of Technology – Bombay have made a low cost piezo resistive vibration sensor?

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Answer & Explanation Answer: B) Only Polyethylene

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Which of the following is NOT a compound?

 

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Answer & Explanation Answer: B) Milk

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