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Q:

___ is the number of shells for elements of the 3rd period.

 

A) 1 B) 0
C) 2 D) 3

Answer:   D) 3



Explanation:
Subject: Chemistry
Exam Prep: Bank Exams
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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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