Questions

Q:

What is the general formula of alkenes?

 

A) CnH2n B) CnH2n+2
C) CnH2n-2 D) CnH2n-1
 
Answer & Explanation Answer: A) CnH2n

Explanation:
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Q:

Which is released during the formation of a peptide bond?

 

 

A) an amino group B) a five-carbon sugar
C) both 1 and 2 D) a water molecule
 
Answer & Explanation Answer: D) a water molecule

Explanation:
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Q:

Statement I :

By far the most common topographic form in a Karst terrain is the sinkhole.

Statement II :

Topographically, a sinkhole is a depression that varies in depth from less than a meter to few hundred meters.

A) Both the statements are individually true and Statement II is the correct explanation of Statement I B) Both the statements are individually true but Statement II is not the correct explanation of Statement I
C) Statement I is true but Statement II is false D) Statement I is false but Statement II is true
 
Answer & Explanation Answer: B) Both the statements are individually true but Statement II is not the correct explanation of Statement I

Explanation:

A sinkhole (in Karst topography) is a hole in the ground that forms when water dissolves surface rock. Often, this surface rock is limestone, which is easily eroded, or worn away, by the movement of water.

Formation of a Sinkhole: In a landscape where limestone sits underneath the soil, water from rainfall collects in cracks in the stone. These cracks are called joints. Slowly, as the limestone dissolves and is carried away, the joints widen until the ground above them becomes unstable and collapses. The collapse often happens very suddenly and without very much warning. Water collects in these collapsed sections, forming sinkholes.

Sinkholes also form when the roofs of caves collapse. Sinkholes are often funnel-shaped, with the wide end open at the surface and the narrow end at the bottom of the pool.Sinkholes vary from shallow holes about 1 meter (3 feet) deep, to pits more than 50 meters (165 feet) deep.

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Q:

They come out at night without being called and are lost in the day without being stolen. What are they?

A) Light B) Bats
C) Stars D) Flights
 
Answer & Explanation Answer: C) Stars

Explanation:

Stars are what that come out at night without being called and are lost in the day without being stolen.

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Q:

Which of the following statement(s) is/are CORRECT?

I. Bases are soapy to touch.

II. Bases generate OH– ions.

III. Metal oxides dissolve in water to form Acidic solution. 

 

A) Only I and II   B) Only I and II
C) Only II and III D) All I, II and III
 
Answer & Explanation Answer: A) Only I and II  

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Q:

What enables an electric current to flow in a circuit?

 

A) The motion of electrons B) The motion of neutrons
C) The motion of positrons D) The motion of protons
 
Answer & Explanation Answer: A) The motion of electrons

Explanation:
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Q:

The absence of law and order

 

A) Mutiny B) Rebellion
C) Revolt D) Anarchy
 
Answer & Explanation Answer: D) Anarchy

Explanation:

Anarchy is what the absence of law and order i.e, government and freedom of an individual.

 

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Q:

Which of the following group does NOT follow Newlands Law of Octaves?

 

A) Li, Na B) Be, Mg  
C) C, Si   D) Mn, Hg
 
Answer & Explanation Answer: D) Mn, Hg

Explanation:
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