Questions

Q:

What types of orbital overlap occur in Cumulene?

Answer

A cumulene is a hydrocarbon with three or more cumulative double bonds. They are analogous to allenes, only having a more extensive chain. The simplest molecule in this class is butatriene, which is also called simply cumulene.


 


The carbons on the ends are sp² hybridized, with a p-orbital for the 'second' bond in the double bond with their neighboring carbons.


They have those sp² orbitals overlapping with the s from the hydrogen, and they have a p overlapping in the pi bond with the neighboring carbon. They also have a sigma bond with the neighboring carbon I'll get to.


The middle carbons each have two pi bonds with their neighbors, leaving sp hybridiaztion for the rest. So they have sp/sp² with the end carbons, and sp/sp with each other. (And they also have p/p in the pi bonds).


 


All orbital overlappings in Cumuene are :


* s/sp²


* p/p


* sp/sp²


* sp/sp

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Subject: Chemistry Exam Prep: AIEEE , Bank Exams , CAT
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Q:

Genes contain instructions for assembling what?

A) Amino acids B) Proteins
C) Nucleotides D) All of the above
 
Answer & Explanation Answer: B) Proteins

Explanation:

Genes which are segment of DNA of a cell contains instructions for assembling proteins.

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Filed Under: Biology
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Q:

The International Atomic Energy Agency was created under the aegis of the UN in

A) 1945 B) 1946
C) 1955 D) 1957
 
Answer & Explanation Answer: D) 1957

Explanation:
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Filed Under: World Organisations

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Q:

Which of these cities has one part of it is in Asia and other part in Europe ?

A) Moscow B) London
C) Istanbul D) Saint Peteresburg
 
Answer & Explanation Answer: C) Istanbul

Explanation:
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Filed Under: World History

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Q:

Who is competent to dissolve the Rajya Sabha?

A) The President B) The Rajya Sabha Chairman
C) The joint session of Parliament D) No one
 
Answer & Explanation Answer: D) No one

Explanation:

The upper house of the parliament is the Rajya Sabha and is a permanent body.

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Filed Under: Indian Politics
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Q:

The Hydraulic Break works on the principle of _____ ?

A) Pascal's Law B) Boyle's law
C) Coulomb's law D) Bernouli's law
 
Answer & Explanation Answer: A) Pascal's Law

Explanation:
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Filed Under: Physics
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Q:

What is the difference between Thermal Energy and Heat Energy?

Answer

Energy tranfer takes place either by means of Heat or Work only in Thermodynamics.


Heat :: Heat Energy is defined as Energy that can be transferred due to temperature change.


Whereas


Thermal Energy :: Thermal Energy is the Internal Energy stored in the system maintained at a certain Temperature.

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Subject: Physics Exam Prep: AIEEE , Bank Exams
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Q:

Name the Indian player who was chosen by the Indian Olympic Association (IOA) as the flag-bearer of the Indian contingent for the opening ceremony of the Gold Coast Commonwealth Games.

A) P V Sindhu B) Deepa Karmakar
C) Saina Nehwal D) Sakshi Malik
 
Answer & Explanation Answer: A) P V Sindhu

Explanation:

Indian Olympic Association (IOA) chooses P.V. Sindhu as the flag-bearer of the Indian contingent for the opening ceremony of the Gold Coast Commonwealth Games.

The opening ceremony will be held on April 4, 2018.

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Filed Under: Sports
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