Relevant Titles
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CBSE Class 11 Chemistry MCQs on Alkali and Alkaline Earth Metals
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NCERT-Based Class 11 Chemistry Quiz – Alkali & Alkaline Earth Metals
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Important MCQs on s-Block Elements for CBSE Class 11 Students
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CBSE Chapter 10: Alkali and Alkaline Earth Metals Practice Test
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Class 11 Chemistry Online Test – Group 1 and Group 2 Elements
Introduction Paragraph
Alkali Metals and Alkaline Earth Metals are essential topics under Chapter 10: The s-Block Elements from Part B: Inorganic Chemistry in the CBSE Class 11 Chemistry syllabus. These elements, belonging to Groups 1 and 2 of the periodic table, exhibit unique properties such as high reactivity, low ionization energies, and strong reducing behavior. Understanding their electronic configurations, trends, flame test colors, and chemical reactivity is crucial for mastering the basics of Inorganic Chemistry.
This CBSE Class 11 Chemistry Online Practice Test has been developed following the NCERT guidelines, offering concept-based multiple-choice questions to strengthen understanding. With automatic scoring and instant feedback, this quiz helps students assess their preparation level for board exams, JEE, and NEET.
By practicing these MCQs, learners can build a solid foundation on the periodic trends, compounds, and industrial uses of alkali and alkaline earth metals, ensuring complete conceptual clarity.
Sample MCQs (with Answers and Explanations):
Q1. Which of the following is an alkali metal?
A) Calcium B) Magnesium C) Sodium D) Aluminium
Answer: C
Explanation: Sodium (Na) is an alkali metal from Group 1. It is highly reactive and forms basic oxides and hydroxides.
Q2. Which alkaline earth metal gives a brick-red color in a flame test?
A) Magnesium B) Calcium C) Barium D) Strontium
Answer: B
Explanation: Calcium imparts a brick-red color in a flame test, a key property used for identification of Group 2 metals.
Q3. Which oxide of an s-block element is amphoteric in nature?
A) Na₂O B) CaO C) BeO D) K₂O
Answer: C
Explanation: Beryllium oxide (BeO) shows amphoteric behavior, reacting with both acids and bases due to its covalent nature.
Q4. Which alkali metal has the lowest ionization enthalpy?
A) Li B) Na C) K D) Cs
Answer: D
Explanation: Cesium (Cs), being the largest in atomic size among alkali metals, has the lowest ionization enthalpy.
Q5. Which compound of calcium is commonly known as quicklime?
A) CaCO₃ B) CaO C) Ca(OH)₂ D) CaCl₂
Answer: B
Explanation: Calcium oxide (CaO) is called quicklime and is used in construction and as a drying agent.