s-Block Elements Practice Questions

JEE · Chemistry · 1263 free MCQs with instant results and detailed explanations.

1263

Total

253

Easy

562

Medium

448

Hard

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Topics in s-Block Elements

Diagonal Relationship 331

Compounds of Na K Ca 337

Alkaline Earth Metals 316

Alkali Metals 279

Sample Questions from s-Block Elements

Here are 10 sample questions. Start a quiz to get randomized questions with scoring.

Easy

What is the primary use of sodium in everyday life?

A. Table salt

B. Batteries

C. Glass making

D. Photographic films

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Correct Answer: A

Sodium is primarily known for its role in common table salt (sodium chloride), which is widely used in cooking and food preservation.

Easy

Which alkali metal is used in the production of fireworks for its bright flame?

A. Sodium

B. Potassium

C. Lithium

D. Rubidium

Show Answer & Explanation

Correct Answer: B

Potassium is used in fireworks because it produces a bright violet flame when burned, adding color to the display.

Easy

When an alkali metal reacts with halogens, what type of compound is formed?

A. Metal oxide

B. Metal halide

C. Metal hydroxide

D. Metal sulfate

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Correct Answer: B

Alkali metals react with halogens to form ionic compounds known as metal halides, characterized by high melting points and solubility.

Medium

Which alkali metal reacts vigorously with water and produces hydrogen gas that can ignite spontaneously?

A. Sodium

B. Lithium

C. Potassium

D. Cesium

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Correct Answer: C

Potassium reacts vigorously with water and the hydrogen gas produced can ignite spontaneously due to the exothermic nature of the reaction, especially in the presence of moisture.

Medium

Which of the following alkali metals forms a peroxide when reacted with oxygen?

A. Lithium

B. Sodium

C. Potassium

D. Rubidium

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Correct Answer: C

Potassium reacts with oxygen to form potassium peroxide. Lithium primarily forms a monoxide, while sodium can form both a monoxide and peroxide under specific conditions.

Medium

Which of the following alkali metals reacts vigorously with water?

A. Lithium

B. Sodium

C. Cesium

D. Rubidium

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Correct Answer: C

Cesium reacts the most vigorously with water due to its low ionization energy and larger atomic size, leading to a more exothermic reaction.

Medium

Which of the following compounds is known as caustic soda?

A. NaOH

B. KOH

C. LiOH

D. RbOH

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Correct Answer: A

NaOH is commonly known as caustic soda, widely used in various chemical processes.

Hard

What is the standard electrode potential for the reaction Li⁺ + e⁻ → Li?

A. -3.04 V

B. -2.93 V

C. -3.45 V

D. -3.15 V

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Correct Answer: A

The standard electrode potential for lithium reduction is -3.04 V, indicating its strong tendency to lose electrons.

Hard

Which alkali metal reacts violently with water to produce hydrogen gas and hydroxide?

A. Lithium

B. Sodium

C. Potassium

D. Cesium

Show Answer & Explanation

Correct Answer: D

Cesium reacts most violently with water among alkali metals, producing significant heat and hydrogen gas rapidly.

Q10

Hard

Which alkali metal salt has the highest solubility in water?

A. Li2SO4

B. NaCl

C. KBr

D. RbI

Show Answer & Explanation

Correct Answer: A

Lithium sulfate (Li2SO4) is highly soluble in water compared to other alkali metal salts due to its ionic nature and hydration energy.

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s-Block Elements — JEE Chemistry Practice Questions Online

This page contains 1263 practice MCQs for the chapter s-Block Elements in JEE Chemistry. The questions are organized by difficulty — 253 easy, 562 medium, 448 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 4 topics, giving you comprehensive coverage of the entire chapter.