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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



Explanation:
Subject: Chemistry
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Which of the following is NOT a noble gas?

A) Radon B) Krypton
C) Xenon D) Hydrogen
 
Answer & Explanation Answer: D) Hydrogen

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Q:

The number of free electrons in the outermost shell of carbon atoms in diamand is

A) zero B) two
C) four D) three
 
Answer & Explanation Answer: A) zero

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2 832
Q:

SnCl2 + 2HgCl2 ---> Hg2Cl2 + SnCl4

 

In the given reaction

 

A) HgCl2 is oxidised B) SnCl2 is oxidised
C) Hg2Cl2 is oxidised D) SnCl2 is reduced
 
Answer & Explanation Answer: B) SnCl2 is oxidised

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1 22848
Q:

Number of Sigma and Pi bonds in benzene, respectively is

A) 12 and 3 B) 3 and 3
C) 6 and 3 D) 9 and 3
 
Answer & Explanation Answer: A) 12 and 3

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1 841
Q:

The gas evolved when sodium carbonate reacts with hydrochloric acid is

A) Hydrogen B) Chlorine
C) Hydrogen Chloride D) Carbon dioxide
 
Answer & Explanation Answer: D) Carbon dioxide

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0 759
Q:

Which of the following type of medicine is used to treat indigestion?

A) Sulpha drug B) Antihistamine
C) Antibiotic D) Antacid
 
Answer & Explanation Answer: D) Antacid

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0 644
Q:

Find the similarity in the following :

 

Carbon, Silicon, Boron, Arsenic

 

A) All of them are gases B) All of them are non-metals
C) All of them are metals D) No similarity
 
Answer & Explanation Answer: B) All of them are non-metals

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0 8453
Q:

Find the odd one out.

A) NaCl B) Na2CO3
C) H2O D) He
 
Answer & Explanation Answer: D) He

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