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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Q:

Which State is the "most corrupt state" According to the National Crime Records Bureau (NCRB)?

A) Manipur B) Maharashtra
C) Himachal Pradesh D) Uttarakhand
 
Answer & Explanation Answer: B) Maharashtra

Explanation:
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Q:

Who is the Vice Chairman of NITI Aayog?

A) Rajeev Shukla B) V.K. Paul
C) Rajiv Kumar D) Bibek Debroy
 
Answer & Explanation Answer: C) Rajiv Kumar

Explanation:

Indian Economist Rajiv Kumar is the Vice Chairman of NITI Aayog.

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Q:

Indicate what would the SWAP macro be expanded to on preprocessing. Would the code compile?

#define SWAP (a, b, c ) (c t; t = a, a = b, b = t; )

main()

{

    int x = 10, y = 20;

    SWAP (x, y, int );

    printf ( " %d%d ", x, y);

}

Answer

( int t ; t = a, a = b, b = t ;);


This code won't compile since declaration of t cannot occur within parentheses.


 

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Subject: Programming

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Q:

Which describes the correct pairing of DNA bases?

A) guanine - cytosine B) adenine - cytosine
C) guanine - thymine D) thymine - cytosine
 
Answer & Explanation Answer: A) guanine - cytosine

Explanation:

The correct pairing of DNA bases among the given options is guanine - cytosine.

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Q:

Which tennis player has authored a book titled "Unstoppable : My Life So Far" ?

A) Serena Williams B) Maria sharapova
C) Sania Mirza D) Venus Williams
 
Answer & Explanation Answer: B) Maria sharapova

Explanation:
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Q:

Amino acids can be distinguished from one another by

A) type of bond between the R group and the rest of the molecule B) the number of R groups found on the amino acid molecules
C) the chemical properties of their R groups D) the chemical properties of the amino and carboxyl groups
 
Answer & Explanation Answer: C) the chemical properties of their R groups

Explanation:

Amino acids are organic compounds containing amine (-NH2) and carboxyl (-COOH) functional groups, along with a side chain (R group) specific to each amino acid.

 

Depending on the nature of the side chain groups, three classes of aminoacids can e distinguished:

1. Amino acids with H ond donor and acceptor groups.

Histidine, lysine, aspartic acid, threonine,...

2. Amino acids with donor grups only.

Arginine, tryptophan and cysteine.

3. Amino acids with acceptor groups only.

Asparagine and glutamine.

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Q:

One who believes in fate?

A) determinist B) predestinarianist
C) fatalist D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

A person that believes completely in fate is a fatalist, or sometimes predestinarianist or determinist.

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