MCQ 46
The number of unpaired electrons in the carbon atom in ground state
A. 4
B. 2
C. 3
D. 1

Answer: 2

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MCQ 47
The charge on proton is
A. -1.6 x 10-31 C
B.  1.6 x 10-31 C
C. -1.6 x 10-19 C
D. +1.6 ×10-19. C

Answer: D

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MCQ 48
The isotone of C-14 is
A. 14N7
B. 16O8
C. 11B4
D. 20Ne10

Answer: B

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MCQ 49
Which orbital correctly represents the last electron in the element of VII-A group and 3rd period
A. 2s
B. Px
C. Py
D. 3P

Answer: D

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MCQ-50
Which of the following is not true for canal rays
A Travel in straight line opposite to cathode rays
B. Can’t ionize the gas-
C. Produce glow, when strike with glass
D. Carry positive charge

Answer: B

This Post Has 6 Comments

    1. Hifsa Pervez

      Shapes of orbitals were explained by magnetic or azimuthal quantum number? Answer below the question is given magnetic quantum number but in the explanation video of this question answer is given azimuthal quantum number.

      1. Umair Ali khan

        Azimuthal. The discussion has correct answers. Please mention the question number, therefore, it is corrected.

  1. Haseeb UR Rehman

    In ethanol and methanol, which has greater hydrogen bonding?

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