Bihar Board - Class 12 - Chemistry - Chapter 7: p-Block Elements Multiple Choice Questions ( MCQs)
Multiple Choice Question
1. Catenation property is maximum in
(A) phosphorus
(B) carbon
(C) sulfur
(D) zinc
Answer ⇒ (B) carbon
2. Which one of the following is an electrophilic reagent ?
(A) BF3
(B) NH3
(C) H2O
(D) None of these
Answer ⇒ (A) BF3
3. The shape of XeF4 is
(A) tetrahedral
(B) square planar
(C) pyramidal
(D) linear
Answer ⇒ (B)
4. Which one of the following is the strongest lewis acid ?
(A) BF3
(B) BC3
(C) BBr3
(D) BI3
Answer ⇒ (D) BI3
5. Which one of the following is least basic ?
(A) NCl3
(B) NBr3
(C) NI3
(D) NF3
Answer ⇒ (D) NF3
6. Modern periodic table is given by
(A) Debonair
(B)Henry Moseley
(C) Mendeeevl
(D) None of these
Answer ⇒ (B)Henry Moseley
7. Which of the following has maximum ionization potential ?
(A) Al
(B) P
(C) Si
(D) Mg
Answer ⇒ (D) Mg
8. The number of P-O-P bonds in cyclic metaphosphoric acid is
(A) 2
(B) 0
(C) 3
(D) 4
Answer ⇒ (C) 3
9. Which of the following is a tetrabasic acid ?
(A) Hypophosphorous acid
(B) Metaphosphoric acid
(C) Pyrophosphoric acid
(D) Orthophosphoric acid
Answer ⇒ (C) Pyrophosphoric acid
10. Which are not p-block elements ?
(A) Sn
(B) Al
(C) Mg
(D) Pb
Answer ⇒ (C) Mg
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