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Q:

Which of the following is an example of compound?

 

A) Manganese B) Air
C) Ozone D) Ammonia gas

Answer:   D) Ammonia gas



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

A) 74% B) 76%
C) 78% D) 80%
 
Answer & Explanation Answer: C) 78%

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

 

A) poisonous B) carcinogenic
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Answer & Explanation Answer: D) greenhouse

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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?

 

A) Li, Na, K B) N, P Au
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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?

A) Only Polyurethane B) Only Polyethylene
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Answer & Explanation Answer: B) Only Polyethylene

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Which of the following is NOT a compound?

 

A) Ammonia B) Milk
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Answer & Explanation Answer: B) Milk

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