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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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Filed Under: Chemistry
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Q:

Who of the following scientists is named after ISRO in sriharikota ?

A) APJ Abdul Kalam B) Vikram Sarabhai
C) Homi J Baba D) Satish Dhawan
 
Answer & Explanation Answer: D) Satish Dhawan

Explanation:
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Filed Under: General Awareness

38 6411
Q:

Rearrange the parts of the sentence in correct order.

 

The essay is about

P-namely,
Q-what its title says,
R-the enemies of intellectual liberty

 

A) RPQ B) QRP
C) QPR D) PRQ
 
Answer & Explanation Answer: C) QPR

Explanation:
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Filed Under: English
Exam Prep: Bank Exams

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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

Explanation:
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Filed Under: Famous Places

10 6410
Q:

What Asks But Never Answers?

A) Teacher B) Telephone
C) Letter D) Owl
 
Answer & Explanation Answer: D) Owl

Explanation:

An owl.

"What noise does an owl make?

The sound an Owl makes, it sounds like, "Who?" to our ears.

They sounds entire lives asking the same question, but they'll never give any answers.

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Filed Under: Word Puzzles
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14 6408
Q:

Which species is a conjugate acid of OH- ?

 

A) H+ B) O2- 
C) OH D) H2O
 
Answer & Explanation Answer: D) H2O

Explanation:
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Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams

4 6399
Q:

Carbon dioxide is one of the gases that cause the _________.

 

A) greenhouse effect   B) ozonification  
C) oven phenomenon   D) sunburn  
 
Answer & Explanation Answer: A) greenhouse effect  

Explanation:
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Filed Under: Chemistry
Exam Prep: Bank Exams

0 6397
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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Subject: Logic Puzzles Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE , TOEFL
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