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Q:

Which among the following is false about alpha particles?

A) They have high ionizing power B) They have high penetrating power
C) They have high kinetic energy D) They are positively charged helium nuclei

Answer:   B) They have high penetrating power



Explanation:
Subject: Chemistry
Exam Prep: Bank Exams
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The percentage of nitrogen in the air is about

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Answer & Explanation Answer: C) 78%

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Methane contributes towards global warming so it is called a _________________ gas.

 

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Which of the following is a metal?

 

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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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Safety matches contain

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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
C) Resistants D) Pollutants
 
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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