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Q:

Which of the following group is NOT Dobereiner Triads?

 

A) Li, Na, K B) N, P Au
C) Cl, Br, I D) Ca, Sr, Ba

Answer:   B) N, P Au



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Subject: Chemistry
Exam Prep: Bank Exams
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Which of the following solutions is the most acidic among them all?

A) Solution with pH value 0 B) Solution with pH value 6
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Answer & Explanation Answer: A) Solution with pH value 0

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Which of the following metals displaces Iron from Iron Chloride?

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The formula C6H14 represents the hydrocarbon ___.

 

A) Hexene B) Heptyne
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Answer & Explanation Answer: C) Hexane

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The number of valence electrons in an atom of Phosphorous is

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Answer & Explanation Answer: D) 5

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Curd contains mainly ___ acid.

A) Benzoic B) Fumaric
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___ is used in yellow lamp street lights.

A) Neon B) Nitrogen
C) Phosphorous D) Sodium
 
Answer & Explanation Answer: D) Sodium

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Apart from proposing atomic theory, what did John Dalton researched on?

 

A) Plants B) Colour blindness
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Answer & Explanation Answer: B) Colour blindness

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What is formed when helium atom loses one electron?

 

A) Proton B) Positive helium ion
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Answer & Explanation Answer: B) Positive helium ion

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