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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Questions
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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