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Q:

What are isobars?

A) Elements with same atomic number but different mass number B) Elements with different atomic number but same mass number
C) Elements with different atomic number and different mass number D) Elements with same atomic number and same mass number

Answer:   B) Elements with different atomic number but same mass number



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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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Answer & Explanation Answer: B) Milk

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