Questions

Q:

The reactivity of an atom arises from 

A) the existence of unpaired electrons in the valence shell B) the energy differences between the electron shells
C) the sum of the potential energies of all the electron shells D) the average distance of the outermost electron shell from the nucleus
 
Answer & Explanation Answer: A) the existence of unpaired electrons in the valence shell

Explanation:

When atoms react they do so in order to reach the lowest energy, which is the most stable. The electrons orbitals will overlap in the way that reduces the energy the most. Orbitals of similar energy will produce the greatest stabilisation.The answer you gave isn't the whole story, it depends what species is reacting with what. The effective nuclear charge on the atom will affect the energy of the valance electrons.

 

Hence, the reactivity of an atom arises from the existence of unpaired electrons in the valence shell.

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Q:

STEP is the abbreviated name of the welfare programme to help

A) Children B) Woman
C) Farmers D) Senior citizens
 
Answer & Explanation Answer: B) Woman

Explanation:
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Filed Under: Indian Economy

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Q:

Rearrange the parts of the sentence in correct order.

 

Warm-blooded

 

P : animals have an elaborate

Q : maintain constant body temperature

R : physiological control to

 

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

Explanation:
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Q:

 What is the full form of GSLV ?

A) Ground Satellite Launching Vehicle B) Geosynchronous Satellite Launching Vehicle
C) Gravity synchronous Launching Vehicle D) Group satellite Launching vehicle
 
Answer & Explanation Answer: B) Geosynchronous Satellite Launching Vehicle

Explanation:
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Q:

Who summons the joint sitting of both the houses of the Indian Parliament?

 

A) Prime Minister of India B) President of India
C) Speaker of Lok Sabha D) Chairman of Rajya Sabha
 
Answer & Explanation Answer: B) President of India

Explanation:
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Q:

Pageant is most similar in meaning to

A) Show B) Gallant
C) Beauty D) Sovereign
 
Answer & Explanation Answer: A) Show

Explanation:

Pageant is most similar in meaning to Show.

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Q:

Prithvi spent Rs.89,745 on his college fees, Rs 51,291 on Personality Development Classes, and the remaining 27% of the total amount he had as cash with him. What was the total amount?

A) Rs.1,85,400 B) Rs.1,89,600
C) Rs.1,91,800 D) Rs.1,93,200
 
Answer & Explanation Answer: D) Rs.1,93,200

Explanation:
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Q:

What kind of attempts is made by individuals to obtain confidential information from a person by falsifying their identity  ?

A) Spyware scams B) Phishing scams
C) Computer viruses D) None
 
Answer & Explanation Answer: B) Phishing scams

Explanation:
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