MCQ Questions for Class 11 Chemistry Chapter 11 The p-Block Elements with Answers

The p-Block Elements Class 11 Chemistry MCQs Questions with Answers

Check the below NCERT MCQ Questions for Class 11 Chemistry Chapter 11 The p-Block Elements with Answers Pdf free download. MCQ Questions for Class 11 Chemistry with Answers were prepared based on the latest exam pattern. We have Provided The p-Block Elements Class 11 Chemistry MCQs Questions with Answers to help students understand the concept very well.

Class 11 Chemistry Chapter 11 Quiz

Class 11 Chemistry Chapter 11 MCQ Online Test

You can refer to NCERT Solutions for Class 11 Chemistry Chapter 11 The p-Block Elements to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

The p-Block Elements Class 11 Chemistry MCQ online test

Q1.	Consider the following statement about Ozone I. O₃ is formed by the interaction of fluorine. II. It turns tetramethyl base paper as violet. III. It turns benzidine paper as brown. The correct set of true statement is
	A.I and II
	B.I, II and III
	C.I and III
	D.II and III

Ans: I, II and III

Q2.	In the compound of type ECl₃, where E = B, P, As, or Bi, the angle Cl – E – Cl for different E are ion the order:
	A.B = P = As = Bi
	B.B > P > As > Bi
	C.B < P = As = Bi
	D.B < P < As < Bi

Ans: B > P > As > Bi

Q3.	In white phosphorous(P₄) molecule, which one is not correct:
	A.6P-P single bonds are present
	B.4P-P single bonds are present
	C.4 lone pair of electrons is present
	D.P-P-P bond angle is 60°

Ans: 6P-P single bonds are present

Q4.	All the elements of oxygen family are
	A.Non metals
	B.Metalloids
	C.Radioactive
	D.Polymorphic

Ans: Polymorphic

Q5.	Which of the following will not produce hydrogen gas ?
	A.Reaction between Fe and dil. HCl
	B.Reaction between Zn and NaOH
	C.Reaction between Zn and conc. H₂SO₄
	D.Electrolysis of NaCl in Nelsons cell

Ans: Reaction between Zn and conc. H₂SO₄

Q6.	Amorphous form of Silica is
	A.Tridymite
	B.Kieselguhr
	C.Cristobalite
	D.Quartz

Ans: Cristobalite

Q7.	Graphite is a soft solid lubricant extremely diffcult to melt. The reason for this anomalous behaviour is that graphite.
	A.Has carbon atoms arranged in large plates of rings of strongly bound carbon atoms with weak interplate bonds
	B.Is a non – crystalline substance
	C.Is an allotropic from of carbon
	D.Has molecules of variable molecular masses like polymers.

Ans: Has carbon atoms arranged in large plates of rings of strongly bound carbon atoms with weak interplate bonds

Q8.	Borax is used as a cleansing agent because on dissolving in water, it gives
	A.Alkaline solution
	B.Acidic solution
	C.Bleaching solution
	D.Amphoteric solution.

Ans: Alkaline solution

Q9.	Among the C-X bond (where, X = Cl, Br, I) the correct decreasing order of bond energy is
	A.C−I > C−Cl > C−Br
	B.C−I > C−Br > C−Cl
	C.C−Cl > C−Br > C−I
	D.C−Br > C−Cl > C−I

Ans: C−Cl > C−Br > C−I

Q10.	On heating boron with caustic potash, the pair of products formed are
	A.Potassium Borate + Dihydrogen
	B.Potassium Borate + Water
	C.Potassium Borate + H₂
	D.Borax + Dihydrogen.

Ans: Potassium Borate + Dihydrogen

Q11.	Which of the following statements regarding ozone is not correct?
	A.The oxygen-oxygen bond length in ozone is identical with that of molecular oxygen
	B.The ozone is response hybrid of two structures
	C.The ozone molecule is angular in shape
	D.Ozone is used as a germicide and disinfectant for the purification of air.

Ans: The oxygen-oxygen bond length in ozone is identical with that of molecular oxygen

Q12.	There is no S-S bond in
	A.S₂O^2-₄
	B.S₂O^2-₅
	C.S₂O^2-₃
	D.S₂O^2-₇

Ans: S₂O^2-₇

Q13.	Which is strongest Lewis acid?
	A.BF₃
	B.BCl₃
	C.BBr₃
	D.BI₃

Ans: BF₃

Q14.	Fertilizer having the highest nitrogen percentage is:
	A.Calcium cyanamide
	B.Urea
	C.Ammonium nitrate
	D.Ammonium sulphate

Ans: Urea

Q15.	In general, the Boron Trihaides act as
	A.Strong reducing agent
	B.Lewis Acids
	C.Lewis Bases
	D.Dehydrating Agents

Ans: Lewis Acids

Q16.	Which of the following is not a mineral of boron?
	A.Colemanite
	B.Kernite
	C.Boric Anhydride
	D.Borax

Ans: Boric Anhydride

Q17.	Which phosphorus is used as a rat poison?
	A.White
	B.Violet
	C.Red
	D.Black

Ans: White

Q18.	The structure of diBorane contains
	A.Four 2c – 2e bonds and two 3c – 2e bonds
	B.Two 2c – 2e bonds and two 3c – 2e bonds
	C.Two 2c – 2e bonds and two 3c – 3e bonds
	D.Four 2c – 2e bonds and four 3c – 2e bonds

Ans: Four 2c – 2e bonds and two 3c – 2e bonds

Q19.	Nitrogen (I) oxide is produced by:
	A.Thermal decomposition of ammonium nitrate
	B.Disproportionation of N₂O₄
	C.Thermal decomposition of ammonium nitrite
	D.None of the above

Ans: Thermal decomposition of ammonium nitrite

Q20.	Red phosphorus is chemically less reactive because
	A.It does not contain P – P bonds
	B.It dos not contain tetrahedral P₄ molecules
	C.It does not catch fire in air even upto 400°C
	D.It has a polymeric structure