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

We have completed the NCERT/CBSE chapter-wise Multiple Choice Questions for Class 11 Chemistry book Chapter 11 The p-Block Elements with Answers by expert subject teacher for latest syllabus and examination. You can Prepare effectively for the exam taking the help of the Class 11 Chemistry Objective Questions PDF free of cost from here. Students can take a free test of the Multiple Choice Questions of The p-Block Elements. Each Questions has four options followed by the right answer. Download the Chemistry Quiz Questions with Answers for Class 11 free Pdf and prepare to exam and help students understand the concept very well.

MCQ Questions for Class 11 Chemistry with Answers

Q1. All the elements of oxygen family are

(i) Non metals
(ii) Metalloids
(iii) Radioactive
(iv) Polymorphic

(iv) Polymorphic

Q2. An aqueous solution of borax is

(i) Basic
(ii) Acidic
(iii) Neutral
(iv) Amphoteric

(i) Basic

Q3. The structure of diBorane contains

(i) Four 2c – 2e bonds and two 3c – 2e bonds
(ii) Two 2c – 2e bonds and two 3c – 2e bonds
(iii) Two 2c – 2e bonds and two 3c – 3e bonds
(iv) Four 2c – 2e bonds and four 3c – 2e bonds

(i) Four 2c – 2e bonds and two 3c – 2e bonds

Q4. Which of the following is most abundant in the earth crust ?

(i) Aluminium
(ii) Thallium
(iii) Boron
(iv) Gallium

(i) Aluminium

Q5. Amorphous form of Silica is

(i) Tridymite
(ii) Kieselguhr
(iii) Cristobalite
(iv) Quartz

(iii) Cristobalite

Q6. Boric acid is polymeric due to

(i) Its acidic nature
(ii) The presence of hydrogen bonds
(iii) Its monobasic nature
(iv) Its geometry

(ii) The presence of hydrogen bonds

Q7. In the upper layers of atmosphere ozone is formed:

(i) By action of electric discharge on oxygen molecule
(ii) By action of ultraviolet rays on oxygen molecule
(iii) By action of infrared rays on oxygen molecule
(iv) Due to sudden drops of pressure

(ii) By action of ultraviolet rays on oxygen molecule

Q8. Which one of the following has the lowest m.p.?

(i) Ga
(ii) B
(iii) Al
(iv) Tl

(i) Ga

Q9. Borax is used as a cleansing agent because on dissolving in water, it gives

(i) Alkaline solution
(ii) Acidic solution
(iii) Bleaching solution
(iv) Amphoteric solution.

(i) Alkaline solution

Q10. The type of hybridisation of boron in diborane is

(i) sp
(ii) sp²
(iii) sp³
(iv) sp³d²

(iii) sp³

Q11. Which of the following oxidation states are most characteristic for lead and tin respectively?

(i) 2, 2
(ii) 4, 2
(iii) 2, 4
(iv) 4, 4

(iii) 2, 4

Q12. The group 13 element that is liquid during summer and used for measuring high temperature is

(i) Gallium
(ii) Boron
(iii) Aluminium
(iv) Indium

(i) Gallium

Q13. On heating boron with caustic potash, the pair of products formed are

(i) Potassium Borate + Dihydrogen
(ii) Potassium Borate + Water
(iii) Potassium Borate + H2
(iv) Borax + Dihydrogen.

(i) Potassium Borate + Dihydrogen

Q14. Diamond and graphite are

(i) Homologues
(ii) Allotropes
(iii) Isomers
(iv) None of the above

(ii) Allotropes

Q15. In general, the Boron Trihaides act as

(i) Strong reducing agent
(ii) Lewis Acids
(iii) Lewis Bases
(iv) Dehydrating Agents

(ii) Lewis Acids

Q16. Aluminium chloride is a/an

(i) Lewis acid
(ii) Bronsted – Lowery acid
(iii) Arhenius acid
(iv) Lewis base

(i) Lewis acid

Q17. Fertilizer having the highest nitrogen percentage is:

(i) Calcium cyanamide
(ii) Urea
(iii) Ammonium nitrate
(iv) Ammonium sulphate

(ii) Urea

Q18. Thermodynamically the most stable form of carbon is

(i) Diamond
(ii) Graphite
(iii) Peat
(iv) Coal

(ii) Graphite

Q19. Which of the following does not react with aqueous NaOH ?

(i) B
(ii) Al
(iii) Ga
(iv) Tl

(ii) Al

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