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

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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

3 6314

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

39 6311

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

13 6310

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 6306

Q:

What is so delicate that even mentioning it breaks it?

Answer

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

Workspace

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

Select the antonym of

virtuous

A) vile	B) chaste
C) kosher	D) celibate

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