NCERT solutions for Chemistry Part 1 and 2 Class 11 chapter 10 - The s-Block Elements [Latest edition]

Chapter 10: The s-Block Elements

EXERCISES
EXERCISES [Pages 313 - 314]

NCERT solutions for Chemistry Part 1 and 2 Class 11 Chapter 10 The s-Block ElementsEXERCISES [Pages 313 - 314]

EXERCISES | Q 10.1 | Page 313

What are the common physical and chemical features of alkali metals?

EXERCISES | Q 10.2 | Page 313

Discuss the general characteristics and gradation in properties of alkaline earth metals.

EXERCISES | Q 10.3 | Page 313

EXERCISES | Q 10.4 | Page 313

Find the oxidation state of sodium in Na2O2.

EXERCISES | Q 10.5 | Page 313

Explain why is sodium less reactive than potassium?

EXERCISES | Q 10.6 | Page 313

Compare the alkali metals and alkaline earth metals with respect to (i) ionization enthalpy (ii) basicity of oxides and (iii) solubility of hydroxides

EXERCISES | Q 10.7 | Page 313

In what ways lithium shows similarities to magnesium in its chemical behaviour?

EXERCISES | Q 10.8 | Page 313

Explain why alkali and alkaline earth metals cannot be obtained by chemical reduction methods?

EXERCISES | Q 10.9 | Page 313

Why are potassium and cesium, rather than lithium used in photoelectric cells?

EXERCISES | Q 10.10 | Page 313

When an alkali metal dissolves in liquid ammonia the solution can acquire different colours. Explain the reasons for this type of colour change.

EXERCISES | Q 10.11 | Page 313

Beryllium and magnesium do not give colour to flame whereas other alkaline earth metals do so. Why?

EXERCISES | Q 10.12 | Page 313

Discuss the various reactions that occur in the Solvay process.

EXERCISES | Q 10.13 | Page 313

Potassium carbonate cannot be prepared by Solvay process. Why?

EXERCISES | Q 10.14 | Page 313

Why is Li2CO3 decomposed at a lower temperature whereas Na2CO3 at a higher temperature?

EXERCISES | Q 10.15 - (a) | Page 314

Compare the solubility and thermal stability of the following compound of the alkali metals with those of the alkaline earth metals.

Nitrates

EXERCISES | Q 10.15 - (b) | Page 314

Compare the solubility and thermal stability of the following compounds of the alkali metals with those of the alkaline earth metals.

Carbonates

EXERCISES | Q 10.15 - (c) | Page 314

Compare the solubility and thermal stability of the following compounds of the alkali metals with those of the alkaline earth metals.

Sulphates

EXERCISES | Q 10.16 - (i) | Page 314

Starting with sodium chloride how would you proceed to prepare sodium metal.

EXERCISES | Q 10.16 - (ii) | Page 314

Starting with sodium chloride how would you proceed to prepare sodium hydroxide.

EXERCISES | Q 10.16 - (iii) | Page 314

Starting with sodium chloride how would you proceed to prepare sodium peroxide.

EXERCISES | Q 10.16 - (iv) | Page 314

Starting with sodium chloride how would you proceed to prepare sodium carbonate?

EXERCISES | Q 10.17 - (i) | Page 314

What happens when magnesium is burnt in air.

EXERCISES | Q 10.17 - (ii) | Page 314

What happens when quick lime is heated with silica?

EXERCISES | Q 10.17 - (iii) | Page 314

What happens when chlorine reacts with slaked lime?

EXERCISES | Q 10.17 - (iv) | Page 314

What happens when calcium nitrate is heated?

EXERCISES | Q 10.18 - (i) | Page 314

Describe two important uses of each of the following caustic soda.

EXERCISES | Q 10.18 - (ii) | Page 314

Describe two important uses of the following sodium carbonate.

EXERCISES | Q 10.18 - (iii) | Page 314

Describe two important uses of the following quicklime.

EXERCISES | Q 10.19 - (i) | Page 314

Draw the structure of BeCl2 (vapour).

EXERCISES | Q 10.19 - (ii) | Page 314

Draw the structure of BeCl2 (solid).

EXERCISES | Q 10.20 | Page 314

The hydroxides and carbonates of sodium and potassium are easily soluble in water while the corresponding salts of magnesium and calcium are sparingly soluble in water. Explain.

EXERCISES | Q 10.21 - (i) | Page 314

Describe the importance of the limestone.

EXERCISES | Q 10.21 - (ii) | Page 314

Describe the importance of the cement.

EXERCISES | Q 10.21 - (iii) | Page 314

Describe the importance of the plaster of paris.

EXERCISES | Q 10.22 | Page 314

Why are lithium salts commonly hydrated and those of the other alkali metal ions usually anhydrous?

EXERCISES | Q 10.23 | Page 314

Why is LiF almost insoluble in water whereas LiCl soluble not only in water but also in acetone?

EXERCISES | Q 10.24 | Page 314

Explain the significance of sodium, potassium, magnesium and calcium in biological fluids.

EXERCISES | Q 10.25 - (i) | Page 314

What happens when sodium metal is dropped in water?

EXERCISES | Q 10.25 - (ii) | Page 314

What happens when sodium metal is heated in the free supply of air?

EXERCISES | Q 10.25 - (iii) | Page 314

What happens when sodium peroxide dissolves in water?

EXERCISES | Q 10.26 - (a) | Page 314

Comment on the following observation:

The mobilities of the alkali metal ions in aqueous solution are Li+ < Na+ < K< Rb+ < Cs+

EXERCISES | Q 10.26 - (b) | Page 314

Comment on the following observation:

Lithium is the only alkali metal to form a nitride directly.

EXERCISES | Q 10.26 - (c) | Page 314

Comment on the following observation:

E for $\ce{M^{2+}_{(aq)} + 2e– -> M(s)}$ (where M = Ca, Sr or Ba) is nearly constant.

EXERCISES | Q 10.27 - (a) | Page 314

State as to why a solution of Na2CO3 is alkaline?

EXERCISES | Q 10.27 - (b) | Page 314

State as to why alkali metals are prepared by electrolysis of their fused chlorides?

EXERCISES | Q 10.27 - (c) | Page 314

State as to why sodium is found to be more useful than potassium?

EXERCISES | Q 10.28 - (a) | Page 314

Write a balanced equation for the reaction between Na2Oand water.

EXERCISES | Q 10.28 - (b) | Page 314

Write a balanced equation for the reaction between KO2 and water.

EXERCISES | Q 10.28 - (c) | Page 314

Write a balanced equation for the reaction between Na2O and CO2.

EXERCISES | Q 10.29 - (i) | Page 314

How would you explain the following observation?

BeO is almost insoluble but BeSO4 in soluble in water.

EXERCISES | Q 10.29 - (ii) | Page 314

How would you explain the following observation?

BaO is soluble but BaSO4 is insoluble in water.

EXERCISES | Q 10.29 - (iii) | Page 314

How would you explain the following observation?

LiI is more soluble than KI in ethanol.

EXERCISES | Q 10.30 | Page 314

Which of the alkali metal is having least melting point?

• Na

• K

• Rb

• Cs

EXERCISES | Q 10.31 | Page 314

Which one of the following alkali metals gives hydrated salts?

• Li

• Na

• K

• Cs

EXERCISES | Q 10.32 | Page 314

Which one of the alkaline earth metal carbonates is thermally the most stable?

• MgCO3

• CaCO3

• SrCO3

• BaCO3

EXERCISES

NCERT solutions for Chemistry Part 1 and 2 Class 11 chapter 10 - The s-Block Elements

NCERT solutions for Chemistry Part 1 and 2 Class 11 chapter 10 (The s-Block Elements) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CBSE Chemistry Part 1 and 2 Class 11 solutions in a manner that help students grasp basic concepts better and faster.

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Concepts covered in Chemistry Part 1 and 2 Class 11 chapter 10 The s-Block Elements are Group 1 Elements - Alkali Metals, General Characteristics of the Compounds of the Alkali Metals, Anomalous Properties of Lithium, Some Important Compounds of Sodium, Biological Importance of Sodium and Potassium, Group 2 Elements - Alkaline Earth Metals, General Characteristics of the Compounds of the Alkaline Earth Metals, Anomalous Behaviour of Beryllium, Some Important Compounds of Calcium, Biological Importance of Magnesium and Calcium.

Using NCERT Class 11 solutions The s-Block Elements exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in NCERT Solutions are important questions that can be asked in the final exam. Maximum students of CBSE Class 11 prefer NCERT Textbook Solutions to score more in exam.

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