Preparing for the Joint Entrance Exam (JEE) can be a daunting task. With so many subjects to cover and so many topics to study, it can be challenging to know where to start. One essential topic in the JEE Mains syllabus is the s-Block Elements. In this article, we will provide 50+ MCQ questions on the s-Block Elements, along with detailed solutions to help you prepare for the JEE Mains exam.
These 50+ MCQ questions are selected by the experts of studyrate.in and these are more difficult questions, which will help you to better understand s-Block Elements JEE Mains MCQ Questions with Answers.
s-Block Elements JEE Mains MCQ
Which of the following alkaline earth metals has the highest ionization enthalpy? a) Beryllium b) Magnesium c) Calcium d) Barium
Answer: a) Beryllium
Explanation: Beryllium has the highest ionization enthalpy among alkaline earth metals due to its small atomic size and strong nuclear charge.
Which alkali metal is least reactive with water? a) Lithium b) Sodium c) Potassium d) Rubidium
Answer: a) Lithium
Explanation: Lithium is the least reactive alkali metal with water due to its small size and high ionization energy.
The most common oxidation state of calcium is: a) +1 b) +2 c) +3 d) -2
Answer: b) +2
Explanation: Calcium most commonly exhibits an oxidation state of +2 because it readily loses two valence electrons to attain a stable electronic configuration.
Which alkaline earth metal forms the most stable nitrate? a) Beryllium b) Magnesium c) Calcium d) Barium
Answer: d) Barium
Explanation: Barium forms the most stable nitrate (Ba(NO3)2) among the alkaline earth metals due to its larger size and lower charge density.
The reaction of an alkali metal with dihydrogen results in the formation of: a) Alkane b) Alkene c) Alkyne d) Hydride
Answer: d) Hydride
Explanation: When alkali metals react with dihydrogen (H2), they form metal hydrides (MH) by gaining hydrogen atoms.
Which alkali metal has the highest melting point? a) Lithium b) Sodium c) Potassium d) Rubidium
Answer: c) Potassium
Explanation: Potassium has the highest melting point among the alkali metals due to its larger size and stronger metallic bonding.
The reaction of calcium carbide with water produces: a) Acetylene b) Methane c) Ethylene d) Propylene
Answer: a) Acetylene
Explanation: Calcium carbide (CaC2) reacts with water to produce acetylene gas (C2H2).
Which of the following alkaline earth metals is not found in abundance in the Earth’s crust? a) Beryllium b) Magnesium c) Calcium d) Strontium
Answer: a) Beryllium
Explanation: Beryllium is not found in abundance in the Earth’s crust. It is relatively rare compared to other alkaline earth metals.
Which alkali metal is used in the preparation of photoelectric cells? a) Lithium b) Sodium c) Potassium d) Rubidium
Answer: d) Strontium
Explanation: Strontium is used in the production of fireworks to provide a bright red color due to its characteristic red flame emission.
Which alkaline earth metal is used in the production of fireworks to provide a bright red color? a) Beryllium b) Magnesium c) Calcium d) Strontium
Answer: d) Strontium
Explanation: Strontium is used in the production of fireworks to provide a bright red color due to its characteristic red flame emission.
The most stable oxidation state of alkali metals is: a) +1 b) +2 c) +3 d) -1
Answer: d) Barium
Explanation: Barium has the highest hydration enthalpy among alkaline earth metals due to its larger size and higher charge.
Which of the following alkaline earth metals has the highest hydration enthalpy? a) Beryllium b) Magnesium c) Calcium d) Barium
Answer: d) Barium
Explanation: Barium has the highest hydration enthalpy among alkaline earth metals due to its larger size and higher charge.
The compound formed between magnesium and oxygen is: a) Magnesium oxide b) Magnesium hydroxide c) Magnesium peroxide d) Magnesium carbonate
Answer: a) Magnesium oxide
Explanation: The compound formed between magnesium and oxygen is magnesium oxide (MgO), which is an ionic compound.
Which alkali metal is used in the production of optical glasses and lenses? a) Lithium b) Sodium c) Potassium d) Rubidium
Answer: a) Lithium
Explanation: Lithium is used in the production of optical glasses and lenses due to its low density and ability to enhance clarity.
The reaction of sodium with chlorine results in the formation of: a) Sodium chloride b) Sodium bromide c) Sodium iodide d) Sodium fluoride
Which alkaline earth metal exhibits the highest metallic character? a) Beryllium b) Magnesium c) Calcium d) Barium
Answer: d) Barium
Explanation: Barium exhibits the highest metallic character among alkaline earth metals due to its larger size and lower electronegativity.
Which alkali metal is used in the production of fertilizers? a) Lithium b) Sodium c) Potassium d) Rubidium
Answer: c) Potassium
Explanation: Potassium is commonly used in the production of fertilizers due to its role in promoting plant growth.
The reaction of calcium oxide with water produces: a) Calcium hydroxide b) Calcium carbonate c) Calcium chloride d) Calcium sulfate
Answer: a) Calcium hydroxide
Explanation: Calcium oxide (CaO) reacts with water to produce calcium hydroxide [Ca(OH)2], also known as slaked lime.
Which of the following alkaline earth metals is the most electropositive? a) Beryllium b) Magnesium c) Calcium d) Strontium
Answer: a) Beryllium
Explanation: Beryllium is the most electropositive alkaline earth metal due to its low ionization energy and tendency to lose electrons.
Which alkali metal is used as a heat exchange medium in nuclear reactors? a) Lithium b) Sodium c) Potassium d) Rubidium
Answer: b) Sodium
Explanation: Sodium is commonly used as a heat exchange medium in nuclear reactors due to its low melting point and good heat transfer properties.
The reaction of lithium with water is: a) Violent b) Moderately reactive c) Slow d) Non-reactive
Answer: a) Violent
Explanation: The reaction of lithium with water is violent, resulting in the formation of lithium hydroxide and hydrogen gas.
Which alkaline earth metal is used in the production of fireworks to provide a bright green color? a) Beryllium b) Magnesium c) Calcium d) Barium
Answer: b) Magnesium
Explanation: Magnesium is used in the production of fireworks to provide a bright green color due to its characteristic green flame emission.
Which of the following alkali metals is most likely to form a peroxide? a) Lithium b) Sodium c) Potassium d) Rubidium
Answer: c) Potassium
Explanation: Potassium is most likely to form a peroxide (K2O2) due to its larger size and low ionization energy.
The reaction of calcium with nitrogen gas results in the formation of: a) Calcium nitrate b) Calcium nitride c) Calcium oxide d) Calcium hydroxide
Answer: b) Calcium nitride
Explanation: Calcium reacts with nitrogen gas to form calcium nitride (Ca3N2), an ionic compound.
Which alkali metal is used in the production of soaps and detergents? a) Lithium b) Sodium c) Potassium d) Rubidium
Answer: b) Sodium
Explanation: Sodium is commonly used in the production of soaps and detergents due to its ability to form water-soluble salts.
Which of the following alkaline earth metals is the least reactive? a) Beryllium b) Magnesium c) Calcium d) Strontium
Answer: a) Beryllium
Explanation: Beryllium is the least reactive alkaline earth metal due to its small size and high ionization energy.
The compound formed between lithium and chlorine is: a) Lithium chloride b) Lithium bromide c) Lithium iodide d) Lithium fluoride
Answer: a) Lithium chloride
Explanation: The compound formed between lithium and chlorine is lithium chloride (LiCl), an ionic compound.
Which alkali metal is used in the production of batteries? a) Lithium b) Sodium c) Potassium d) Rubidium
Answer: a) Lithium
Explanation: Lithium is commonly used in the production of batteries due to its high electrode potential and lightweight.
The reaction of barium with water is: a) Violent b) Moderately reactive c) Slow d) Non-reactive
Answer: d) Non-reactive
Explanation: Barium is non-reactive with water at room temperature and does not readily react with it.
Which of the following alkaline earth metals has the highest melting point? a) Beryllium b) Magnesium c) Calcium d) Barium
Answer: a) Beryllium
Explanation: Beryllium has the highest melting point among alkaline earth metals due to its strong metallic bonding and compact atomic structure.
We hope there JEE MCQ of Class 11 s-Block Elements will help you to score an excellent rank in JEE Mains and Advanced. If you have any queries feel free to write in the comments section. We at Study Rate are always ready to serve our students.
