The p-Block Elements Practice Questions

Class 11 · Chemistry · 1966 free MCQs with instant results and detailed explanations.

1966

Total

647

Easy

939

Medium

380

Hard

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Topics in The p-Block Elements

Properties and Compounds 689

Group 13 Elements 620

Group 14 Elements 657

Sample Questions from The p-Block Elements

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Easy

Which element is not classified as a Group 13 element?

A. Aluminium

B. Gallium

C. Boron

D. Sodium

Show Answer & Explanation

Correct Answer: D

Sodium is an alkali metal and is not part of Group 13.

Easy

Which of the following has the highest atomic number?

A. Boron

B. Aluminium

C. Gallium

D. Thallium

Show Answer & Explanation

Correct Answer: D

Thallium has the highest atomic number among Group 13 elements.

Easy

Which element in Group 13 is a metalloid?

A. Aluminium

B. Boron

C. Gallium

D. Indium

Show Answer & Explanation

Correct Answer: B

Boron is considered a metalloid, while the others are metals.

Medium

Which of the following elements is a member of Group 13 in the periodic table?

A. Boron

B. Carbon

C. Nitrogen

D. Oxygen

Show Answer & Explanation

Correct Answer: A

Boron is the first element in Group 13 of the periodic table, whereas Carbon, Nitrogen, and Oxygen belong to Groups 14 and 15 respectively.

Medium

Which of the following oxides is commonly associated with aluminum?

A. Al2O3

B. AlO

C. Al2O5

D. AlO2

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Correct Answer: A

Al2O3, or aluminum oxide, is the most common oxide of aluminum and is used in various applications.

Medium

What is the primary oxidation state of aluminum in its compounds?

A. 0

B. +1

C. +3

D. +2

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Correct Answer: C

Aluminum typically exhibits a +3 oxidation state in its compounds due to the loss of three valence electrons.

Medium

Which of the following compounds is a characteristic feature of boron?

A. BCl3

B. B2H6

C. B2O3

D. All of the above

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Correct Answer: D

Boron forms various compounds such as BCl3, B2H6, and B2O3, all of which are characteristic of boron chemistry.

Hard

Which compound is used as a catalyst in the manufacturing of alkyl aluminum compounds?

A. AlCl3

B. BCl3

C. GaCl3

D. InCl3

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Correct Answer: A

AlCl3 is commonly used as a catalyst in organic synthesis, particularly in the production of alkyl aluminum compounds, due to its Lewis acid properties.

Hard

Which of the following Group 13 elements can form stable hydrides?

A. Boron

B. Aluminium

C. Gallium

D. All of the above

Show Answer & Explanation

Correct Answer: D

All listed elements can form stable hydrides, with boron forming boranes, aluminium forming alanes, and gallium forming gallanes.

Q10

Hard

Which of the following oxides of aluminium is amphoteric?

A. Al2O3

B. AlCl3

C. Al(OH)3

D. AlO2

Show Answer & Explanation

Correct Answer: A

Al2O3 is amphoteric as it can react with both acids and bases, showing dual properties typical of amphoteric oxides.

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The p-Block Elements — Class 11 Chemistry Practice Questions Online

This page contains 1966 practice MCQs for the chapter The p-Block Elements in Class 11 Chemistry. The questions are organized by difficulty — 647 easy, 939 medium, 380 hard — so you can choose the right level for your preparation.

Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 3 topics, giving you comprehensive coverage of the entire chapter.