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Class 12 Chemistry Chapter 7 p Block Elements MCQs | Very Short Questions and Answers on Class 12 Chemistry Chapter 7 p Block Elements

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Free download in PDF Very Short Questions and Answers on Class 12 Chemistry Chapter 7 p Block Elements for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like NEET, AIIMS, JIPMER etc. These short solved questions or quizzes are provided by Gkseries./p>

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(1) The forces acting between noble gas atoms are
[A] Vander waals forces
[B] Ion - dipole forces
[C] London - dispersion forces
[D] Magnatic forces
Answer: Vander waals forces
(2) Which of following is correct sequence of noble gas in their group ?
[A] Ar, He, Kr , Ne , Xe, Rn
[B] He, Ar, Ne, Kr, Xe, Rn
[C] He, Ne, Ar, Kr, Xe, Rn
[D] He, Ne, Kr, Ar, Xe, Rn
Answer: He, Ne, Ar, Kr, Xe, Rn
(3) Which of following is noble gas configuration?
[A] 1s2 
[B] 1S2, 2S2
[C] 1S2, 2S2 2P6, 3S1
[D] 1S2, 2S2 2P6, 3S2, 3P6, 4S2
Answer: 1s2 
(4) Which of following noble gas does not have octate of e - in outer most shell.
[A] Ne
[B] Rn
[C] Ar
[D] He
Answer: Ne
(5) Low chemical reactivity of rate gases can be attributed to their
[A] Being nonmetal
[B] Having High ioni cation energies
[C] Being gases
[D] Found in nature in small quantities
Answer: Having High ioni cation energies
(6) % of Ar in air is;
[A] 1%
[B] 2%
[C] 3%
[D] 4%
Answer: 1%
(7) F. forms chemical compound with
[A] He
[B] Ne
[C] Ar
[D] Xe
Answer: Xe
(8) Last member of inert gas element is
[A] Ne
[B] He
[C] Ar
[D] Rn
Answer: Rn
(9) Which of following is inert gas
[A] H2
[B] O2
[C] N2
[D] Argon
Answer: Argon
(10) Which inert gas show abnormal behavior on liquefaction
[A] Xe
[B] He
[C] Ar
[D] Kr
Answer: He
(11) Inert gas producing max. number of compounds
[A] He & Ne
[B] Ar & Ne
[C] Kr & Ne
[D] Ar & Xe
Answer: Ar & Xe
(12) Helium was discovered by
[A] Crooks
[B] Rutherford
[C] Frankland & Lockyer
[D] Dorn
Answer: Frankland & Lockyer
(13) XeF4 & XeF6 are expected to be
[A] Oxidising
[B] Reducing
[C] Un reactive
[D] Strongly basic
Answer: Oxidising
(14) Noble gas forms max. No. of compounds is
[A] Ar
[B] He
[C] Xe
[D] Ne
Answer: Xe
(15) Nuclear Fusion Produces
[A] Ar
[B] Duterium
[C] He
[D] Krypton
Answer: He
(16) Among fluorides, one that does not exists is
[A] XeF4
[B] HeF4
[C] SF4
[D] CF4
Answer: HeF4
(17) Last orbit of argon would have ___ e-
[A] 6
[B] 2
[C] 18
[D] 8
Answer: 8
(18) Electronic configuration of neon is
[A] 1S2, 2S2 2P2
[B] 1S2, 2S2 2P6
[C] 1S2, 2S2 
[D] 1S2
Answer: 1S2, 2S2 2P6
(19) Which of following noble gas s is least polarizable
[A] Xe
[B] Ar
[C] Ne
[D] He
Answer: He
(20) XeF6 on hydrolysis gives
[A] XeO3
[B] XeO
[C] XeO2
[D] Xe
Answer: XeO3

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