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:

Select the synonym of

 

to recline

 

A) to lounge B) to rewind
C) to sheer D) to plump
 
Answer & Explanation Answer: A) to lounge

Explanation:
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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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11 9338
Q:

Every component of your computer is either

A) Hardware or CPU B) RAM/CPU or Hardware
C) Hardware or Software D) System or Application software
 
Answer & Explanation Answer: C) Hardware or Software

Explanation:

All the computers have components that are either Hardware or Software.

The five major components of computers are :

-> Input Unit

-> Output Unit

-> CPU Unit

-> ALU Unit and

-> Control Unit.

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33 9335
Q:

The process of transferring of charge from a charged object to the earth is called ______________.

 

A) neutralisation B) negation
C) terraforming D) earthing
 
Answer & Explanation Answer: D) earthing

Explanation:
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Q:

Improve the bracketed part of the sentence.

 

The pool was dry as the water (had been drained off) the day before.

 

A) has been drained off B) was drained
C) has been drained away D) no improvement
 
Answer & Explanation Answer: D) no improvement

Explanation:
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Q:

What has One Eye Yet cannot See?

A) One-eyed Jack B) A Needle
C) Blind Justice D) Hurricane eye
 
Answer & Explanation Answer: B) A Needle

Explanation:

What has one eye yet cannot see is An Eye of a Needle.

 

A needle has an eye through which we thread it but it is not for seeing.

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Q:

India won its first Olympic hockey gold in

A) 1928 B) 1932
C) 1936 D) 1948
 
Answer & Explanation Answer: A) 1928

Explanation:
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33 9327