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Chapters
2: Quantum Mechanical Model of Atom
3: Periodic Classification Of Elements
4: Hydrogen
▶ 5: Alkali and Alkaline Earth Metals
6: Gaseous State
7: Thermodynamics
8: Physical and Chemical Equilibrium
9: Solutions
10: Chemical bonding
11: Fundamentals of Organic Chemistry
12: Basic concept of organic reactions
13: Hydrocarbons
14: Haloalkanes and Haloarenes
15: Environmental Chemistry
![Samacheer Kalvi solutions for Chemistry - Volume 1 and 2 [English] Class 11 TN Board chapter 5 - Alkali and Alkaline Earth Metals - Shaalaa.com](/images/chemistry-volume-1-and-2-english-class-11-tn-board_6:5f2b1b2038084cf381bfa42c826a928c.jpg "Samacheer Kalvi solutions for Chemistry - Volume 1 and 2 [English] Class 11 TN Board chapter 5 - Alkali and Alkaline Earth Metals")
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Solutions for Chapter 5: Alkali and Alkaline Earth Metals
Below listed, you can find solutions for Chapter 5 of Tamil Nadu Board of Secondary Education Samacheer Kalvi for Chemistry - Volume 1 and 2 [English] Class 11 TN Board.
Samacheer Kalvi solutions for Chemistry - Volume 1 and 2 [English] Class 11 TN Board 5 Alkali and Alkaline Earth Metals Evaluation [Pages 150 - 155]
Choose the best answer
For alkali metals, which one of the following trends is incorrect?
Hydration energy: Li > Na > K > Rb
Ionisation energy: Li > Na > K > Rb
Density: Li < Na < K < Rb
Atomic size: Li < Na < K < Rb
Which of the following statements is incorrect?
Li+ has minimum degree of hydration among alkali metal cations.
The oxidation state of K in KO2 is +1
Sodium is used to make Na/Pb alloy
MgSO4 is readily soluble in water
Which of the following compounds will not evolve H2 gas on reaction with alkali metals?
ethanoic acid
ethanol
phenol
none of these
Which of the following has the highest tendency to give the reaction
\[\ce{M^+_{(g)} ->[Aqueous][Medium] M^+_{(aq)}}\]
Na
Li
Rb
K
Sodium is stored in _________.
alcohol
water
kerosene
none of these
RbO2 is _________.
superoxide and paramagnetic
peroxide and diamagnetic
superoxide and diamagnetic
peroxide and paramagnetic
Find the wrong statement.
sodium metal is used in organic qualitative analysis
sodium carbonate is soluble in water and it is used in inorganic qualitative analysis
potassium carbonate can be prepared by solvay process
potassium bicarbonate is acidic salt
Lithium shows diagonal relationship with __________.
sodium
magnesium
calcium
aluminium
In case of alkali metal halides, the ionic character increases in the order
MF < MCl < MBr < MI
MI < MBr < MCl < MF
MI < MBr < MF < MCl
none of these
In which process, fused sodium hydroxide is electrolysed for the extraction of sodium?
Castner's process
Cyanide process
Down process
All of these
The product obtained as a result of a reaction of nitrogen with CaC2 is
Ca(CN)3
CaN2
Ca(CN)2
Ca3N2
Which of the following has the highest hydration energy
MgCl2
CaCl2
BaCl2
SrCl2
Match the flame colours of the alkali and alkaline earth metal salts in the bunsen burner
| (p) Sodium | (1) Brick red |
| (q) Calcium | (2) Yellow |
| (r) Barium | (3) Violet |
| (s) Strontium | (4) Apple green |
| (t) Cesium | (5) Crimson red |
| (u) Potassium | (6) Blue |
p - 2, q - 1, r - 4, s - 5, t - 6, u - 3
p - 1, q - 2, r - 4, s - 5, t - 6, u - 3
p - 4, q - 1, r - 2, s - 3, t - 5, u - 6
p - 6, q - 5, r - 4, s - 3, t - 1, u - 2
Assertion: Generally alkali and alkaline earth metals form superoxides.
Reason: There is a single bond between O and O in superoxides.
both assertion and reason are true and reason is the correct explanation of assertion
both assertion and reason are true but reason is not the correct explanation of assertion
assertion is true but reason is false
both assertion and reason are false
Assertion: BeSO4 is soluble in water while BaSO4 is not
Reason: Hydration energy decreases down the group from Be to Ba and lattice energy remains almost constant.
both assertion and reason are true and reason is the correct explanation of assertion
both assertion and reason are true but reason is not the correct explanation of assertion
assertion is true but reason is false
both assertion and reason are false
Which is the correct sequence of solubility of carbonates of alkaline earth metals?
BaCO3 > SrCO3 > CaCO3 > MgCO3
MgCO3 > CaCO3 > SrCO3 > BaCO3
CaCO3 > BaCO3 > SrCO3 > MgCO3
BaCO3 > CaCO3 > SrCO3 > MgCO3
In context with beryllium, which one of the following statements is incorrect?
It is rendered passive by nitric acid
It forms Be2C
Its salts are rarely hydrolysed
Its hydride is electron deficient and polymeric
The suspension of slaked lime in water is known as _________.
lime water
quick lime
milk of lime
aqueous solution of slaked lime
A colourless solid substance (A) on heating evolved CO2 and also gave a white residue, soluble in water. Residue also gave CO2 when treated with dilute HCl.
Na2CO3
NaHCO3
CaCO3
Ca(HCO3)2
The compound (X) on heating gives a colourless gas and a residue that is dissolved in water to obtain (B). Excess of CO2 is bubbled through aqueous solution of B, C is formed. Solid (C) on heating gives back X. (B) is
CaCO3
Ca(OH)2
Na2CO3
NaHCO3
Which of the following statement is false?
Ca2+ ions are not important in maintaining the regular beating of the heart
Mg2+ ions are important in the green parts of the plants
Mg2+ ions form a complex with ATP
Ca2+ ions are important in blood clotting
The name 'Blue John' is given to which of the following compounds?
CaH2
CaF2
Ca3(PO4)2
CaO
Formula of Gypsum is
\[\ce{CaSO4.2H2O}\]
\[\ce{CaSO4.1/2H2O}\]
\[\ce{3CaSO4.H2O}\]
\[\ce{2CaSO4.2H2O}\]
When CaC2 is heated in atmospheric nitrogen in an electric furnace the compound formed is
Ca(CN)2
CaNCN
CaC2N2
CaNC2
Among the following the least thermally stable is
K2CO3
Na2CO3
BaCO3
Li2CO3
Write brief answer to the following questions
Why sodium hydroxide is much more water soluble than sodium chloride?
Write the chemical equations for the reactions involved in the Solvay process of preparation of sodium carbonate.
An alkali metal (x) forms a hydrated sulphate, \[\ce{X2SO4.10H2O}\]. Is the metal more likely to be sodium (or) potassium?
Write a balanced chemical equation for the following chemical reaction.
Lithium metal with nitrogen gas
Write a balanced chemical equation for the following chemical reaction.
heating solid sodium bicarbonate
Write a balanced chemical equation for the following chemical reaction.
Rubidium with oxygen gas
Write a balanced chemical equation for the following chemical reaction.
solid potassium hydroxide with CO2
Write a balanced chemical equation for the following chemical reaction.
heating calcium carbonate
Write a balanced chemical equation for the following chemical reaction.
heating calcium with oxygen
Discuss briefly the similarities between beryllium and aluminium.
Give the systematic name for the following.
Milk of magnesia
Give the systematic name for the following.
Lye
Give the systematic name for the following.
Lime
Give the systematic name for the following.
Caustic potash
Give the systematic name for the following.
Washing soda
Give the systematic name for the following.
Soda ash
Give the systematic name for the following.
Trona
Substantiate Lithium fluoride has the lowest solubility among group one metal fluorides.
Mention the uses of plaster of Paris.
Beryllium halides are covalent whereas magnesium halides are ionic why?
Alkaline earth metal (A), belongs to 3rd period reacts with oxygen and nitrogen to form compound (B) and (C) respectively. It undergoes metal displacement reaction with AgNO3 solution to form compound (D). Identify A, B, C and D.
Write a balanced chemical equation for the following chemical reaction.
heating calcium with oxygen
Write a balanced chemical equation for the following chemical reaction.
heating calcium carbonate
Write the balanced chemical equation for the following process.
evaporating a solution of calcium hydrogen carbonate
Write the balanced chemical equation for the following process.
heating calcium oxide with carbon
Explain the important common features of Group 2 elements.
Discuss briefly the similarities between beryllium and aluminium.
Why alkaline earth metals are harder than alkali metals?
How is plaster of Paris prepared?
Give the uses of gypsum.
Describe briefly the biological importance of Calcium and magnesium.
Which would you expect to have a higher melting point, magnesium oxide or magnesium fluoride? Explain your reasoning.
Solutions for 5: Alkali and Alkaline Earth Metals
Samacheer Kalvi solutions for Chemistry - Volume 1 and 2 [English] Class 11 TN Board chapter 5 - Alkali and Alkaline Earth Metals
Shaalaa.com has the Tamil Nadu Board of Secondary Education Mathematics Chemistry - Volume 1 and 2 [English] Class 11 TN Board Tamil Nadu Board of Secondary Education solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. Samacheer Kalvi solutions for Mathematics Chemistry - Volume 1 and 2 [English] Class 11 TN Board Tamil Nadu Board of Secondary Education 5 (Alkali and Alkaline Earth Metals) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
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Concepts covered in Chemistry - Volume 1 and 2 [English] Class 11 TN Board chapter 5 Alkali and Alkaline Earth Metals are The s-Block Elements, Group 1 Elements - Alkali Metals, General Characteristics of the Compounds of Alkali Metals, Biological Importance of Sodium and Potassium, Group 2 Elements - Alkaline Earth Metals, Important Compounds of Calcium Quick Lime, Cao, Biological Importance of Magnesium and Calcium.
Using Samacheer Kalvi Chemistry - Volume 1 and 2 [English] Class 11 TN Board solutions Alkali and Alkaline Earth Metals exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in Samacheer Kalvi Solutions are essential questions that can be asked in the final exam. Maximum Tamil Nadu Board of Secondary Education Chemistry - Volume 1 and 2 [English] Class 11 TN Board students prefer Samacheer Kalvi Textbook Solutions to score more in exams.
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