Questions

Q:

What is the conjugate base of H2O?

A) NH3+ B) OH-
C) H2O D) All the above
 
Answer & Explanation Answer: B) OH-

Explanation:

A conjugate acid, is a species formed by the reception of a proton (H+) by a base—in other words, it is a base with a hydrogen ion added to it.

On the other hand, a conjugate base is what is left over after an acid has donated a proton during a chemical reaction. Hence, a conjugate base is a species formed by the removal of a proton from an acid.

Because some acids are capable of releasing multiple protons, the conjugate base of an acid may itself be acidic.

Represented as the following chemical reaction:

Acid + Base ⇌ Conjugate Base + Conjugate Acid

 

The water molecule is the conjugate acid of the hydroxide ion after the latter received the hydrogen proton donated by ammonium. On the other hand, ammonia is the conjugate base for the acid ammonium after ammonium has donated a hydrogen ion towards the production of the water molecule. We can also refer to OH- as a conjugate base of H2O, since the water molecule donates a proton towards the production of NH+4 in the reverse reaction, which is the predominating process in nature due to the strength of the base NH3 over the hydroxide ion.

 

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Q:

What holds the sides of the DNA ladder together?

A) Polar covalent bonds B) Ionic bonds
C) Metallic bonds D) Covalent bonds
 
Answer & Explanation Answer: D) Covalent bonds

Explanation:

Deoxyribose, which is a pentose, and a phosphate group are the two molecules together form the two sides of the DNA i.e, A sugar (deoxyribose) and a phosphate.

DNA is a double-stranded molecule twisted into a helix (think of a spiral staircase). Each spiraling strand, comprised of a sugar-phosphate backbone and attached bases, is connected to a complementary strand by non-covalent hydrogen bonding between paired bases. The bases are adenine (A), thymine (T), cytosine (C) and guanine (G). A and T are connected by two hydrogen bonds. G and C are connected by three hydrogen bonds.

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Filed Under: Biology
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Q:

Rearrange the parts of the sentence in correct order.

 

We need not
P-order to nurture true cosmopolitanism
Q-burden of loving each other in
R-place on ourselves the unbearable

A) QRP B) RQP
C) PRQ D) PQR
 
Answer & Explanation Answer: B) RQP

Explanation:
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Filed Under: English
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Q:

A function cannot be defined inside another function

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

A function cannot be defined inside the another function, but a function can be called inside a another function.

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Subject: Programming

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Q:

Mr.Meera Sahib Fathima Beevi is distinguished as the first lady

A) Judge of the High Court B) Governor of a State
C) Judge of the Supreme Court D) Gold medal winner in Sports
 
Answer & Explanation Answer: C) Judge of the Supreme Court

Explanation:
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Q:

Age of a Candidate to contest Parliamentary election should not be lesser than

A) 18 years B) 21 years
C) 25 years D) 26 years
 
Answer & Explanation Answer: C) 25 years

Explanation:
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Filed Under: Indian Politics

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Q:

Plants synthesis protein from

A) amino acids B) starch
C) fatty acids D) sugar
 
Answer & Explanation Answer: A) amino acids

Explanation:

We know that, proteins are polymers of amino acids. So, plants are also used to synthesise protein from amino acids. Hence, plants synthesis protein from amino acids in the presence of ATP by specific synthetases.

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Q:

Computer programs are written in a high level programming language, however the human readable version of a program is called _______

A) Cache B) Instruction set
C) Source code D) None of these
 
Answer & Explanation Answer: C) Source code

Explanation:
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