Practice Question and Answer

Q: The reactivity of an atom arises from 3101 0

  • 1
    the existence of unpaired electrons in the valence shell
    Correct
    Wrong
  • 2
    the energy differences between the electron shells
    Correct
    Wrong
  • 3
    the sum of the potential energies of all the electron shells
    Correct
    Wrong
  • 4
    the average distance of the outermost electron shell from the nucleus
    Correct
    Wrong
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Answer : 1. "the existence of unpaired electrons in the valence shell"
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.

Q:

He has the habit of getting into a row over trivial matters. 

3100 0

  • 1
    seeking the help
    Correct
    Wrong
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    picking up a fight
    Correct
    Wrong
  • 3
    getting a right path
    Correct
    Wrong
  • 4
    giving unwanted advice
    Correct
    Wrong
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Answer : 2. "picking up a fight "

Q:

यदि 1+ 23 + .....+103 = 3025 तो 4 + 32 + 108 + ..... 4000 के बराबर है-

3100 0

  • 1
    12300
    Correct
    Wrong
  • 2
    12500
    Correct
    Wrong
  • 3
    12100
    Correct
    Wrong
  • 4
    11800
    Correct
    Wrong
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Answer : 3. "12100"

Q: Which of the following Stock exchanges is called "Big Board"? 3099 0

  • 1
    Nasdaq
    Correct
    Wrong
  • 2
    London Stock Exchange
    Correct
    Wrong
  • 3
    New York Stock Exchange
    Correct
    Wrong
  • 4
    Mumbai Stock Exchange
    Correct
    Wrong
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Answer : 3. "New York Stock Exchange"
Explanation :

Answer: C) New York Stock Exchange Explanation:

Q:

इसकी ठोस अवस्था में कौन सी गैस सूखी बर्फ के रूप में भी जानी जाती है?

3099 0

  • 1
    कार्बन डाइऑक्साइड
    Correct
    Wrong
  • 2
    हाइड्रोजन
    Correct
    Wrong
  • 3
    नाइट्रोजन
    Correct
    Wrong
  • 4
    ऑक्सीजन
    Correct
    Wrong
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Answer : 1. "कार्बन डाइऑक्साइड"

Q:

किसकी अध्यक्षता में मीणा जाति का एक विशाल सम्मेलन अप्रैल 1944 में नीमकाथाना में आयोजित हुआ था?

3099 0

  • 1
    शांतिसागर जी महाराज
    Correct
    Wrong
  • 2
    मगनसागर जी महाराज
    Correct
    Wrong
  • 3
    हीरालाल शास्त्री
    Correct
    Wrong
  • 4
    शोभालाल गुप्ता
    Correct
    Wrong
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Answer : 2. "मगनसागर जी महाराज "

Q:

Identify the segment in the sentence which contains the grammatical error.

If she left now, she would reach the station on time.

3098 0

  • 1
    she would reach
    Correct
    Wrong
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    the station on time
    Correct
    Wrong
  • 3
    if she left now
    Correct
    Wrong
  • 4
    No error
    Correct
    Wrong
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Answer : 4. "No error"

Q:

यदि कूट भाषा में “EDITION”  को “IDETNOI” लिखा जाता है, तो उसी कूट भाषा में “MEDICAL” को कैसे लिखा जाएगा?

3098 0

  • 1
    DEMILAC
    Correct
    Wrong
  • 2
    LACIMED
    Correct
    Wrong
  • 3
    DIEMCAL
    Correct
    Wrong
  • 4
    CADILEM
    Correct
    Wrong
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Answer : 1. "DEMILAC"

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