Sawaal

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Q:

Order of basicity of amines in gaseous state?

A) 2'> 1'> 3' > NH3 B) 3' > 2' > 1'> NH3
C) 1' > 2' > 3'> NH3 D) 2'> 3'> 1' > NH3
 
Answer & Explanation Answer: B) 3' > 2' > 1'> NH3

Explanation:

The order of basicity in ammonia is different in gaseous phases vs. aqueous phases due to hydrogen bonding.

 

So in gaseous phases it's the well known: 3' > 2' > 1'> NH3. Just so we're on the same page, this is due to the inductive effect of electron donating alkyl groups--they destabilize the lone pair on nitrogen atom, making nitrogen more basic.

 

But in aqueous phase, the order is slightly different: 2'> 1'> 3' > NH3.

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Q:

What is the position of metallic ion and non-metallic ion in a chemical formula?

 

A) Metal ion at second position B) Non-metal ion at first position
C) Metal ion at first and non-metal ion at second position D) No option is correct
 
Answer & Explanation Answer: C) Metal ion at first and non-metal ion at second position

Explanation:
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Q:

Computer software can be defined as

 

A) the interaction between the computer and its database B) an interface between the computer and the network
C) the computer and its associated equipment D) the instructions that tell the computer what to do
 
Answer & Explanation Answer: D) the instructions that tell the computer what to do

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Q:

Blood is

A) alkaline B) neutral
C) like a buffer D) acidic
 
Answer & Explanation Answer: A) alkaline

Explanation:
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Filed Under: Biology

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Q:

One of the following sites from where the famous Bullseal of Indus Valley Civilization was found

A) Harappa B) Chanhudaro
C) Lothal D) Mohenjodaro
 
Answer & Explanation Answer: A) Harappa

Explanation:
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Filed Under: Indian History

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Q:

Which three dynasties are known as "Muventar"?

A) Pandya, Chola, Chera B) Pallava, Chola, Pandya
C) Pallava, Chera, Pandya D) Pallava, Chola, Chera
 
Answer & Explanation Answer: A) Pandya, Chola, Chera

Explanation:
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Filed Under: Indian History

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Q:

Teotihuacan Pyramids is located in which country?

A) Agentina B) Peru
C) Mexico D) Laos
 
Answer & Explanation Answer: C) Mexico

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Q:

What is so delicate that even mentioning it breaks it?

Answer

Silence is what is so delicate that even mentioning it breaks it.

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