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Alkali and Alkaline Earth Metals: Solved MCQ Test Series, Practice Questions for NEET, JEE, IIT, VITEEE, BHU, NTSE, MBBS, Engineering tests

 

s-Block Elements (Alkali Metals, Alkaline Earth Metals)
India Study Solution Test Series (Chemistry - Confidence Booster)
NEET, JEE IIT, AIIMS, NTSE | Engineering, BDS, MBBS Admission Test
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Welcome back to your own site India Study Solution
As you are aware that in each set of India Study Solution test series we bring for you another 10 most important questions with their hints & solutions. This post is from our Chemistry Solutions exclusively on Group-I and Group-II elements of Periodic Table.
In each set you will find a combination of typically important some basic with some advanced level questions very helpful for doing online preparation of NEET, JEE (IIT), BHU, JIPMER, COMEDK and all other MBBS Admission Tests, Engineering Entrance Exams, NTSE etc.
Many coaching institutes in India are charging thousands of rupees whereas you can get the same benefit sitting at home just free of cost. How’s that !!
Please scroll down to find NEET / JEE syllabus of s-Block elements.


Chemistry Practice Questions: s-Block Elements 
(Alkali and Alkaline Earth Metals)
(Group 1 Elements: Alkali Metals; Group 2 Elements: Alkaline Earth Metals)
India Study Solution MCQ Test Series – Set 2 (Q. No 11-20)
Question 11: Which of the following has largest size in aqueous solution?
a. Li+
b. Na+
c. K+
d. Cs+

Question 12: Alkali metals are characterised by:
a. good conductors of heat and electricity
b. high melting points
c. low oxidation potentials
d. high ionisation potentials

Question 13: Identify the correct statement
a. Plaster of Paris can be obtained by hydration of gypsum.
b. Plaster of Paris is obtained by partial oxidation of gypsum.
c. Gypsum contains a lower percentage of calcium than Plaster of Paris.
d. Gypsum is obtained by heating Plaster of Paris.

Question 14: NaNO3 is not used as gun powder because it is:
a. Hygroscopic
b. Very costly
c. Amorphous
d. Soluble in water

Question 15: Which of the following compounds has the lowest melting point?
a. CaF2
b. CaCl2
c. CaBr2
d. Cal2

Question 16: Which of the following has the highest solubility in water?
a. LiOH
b. KOH
c. CsOH
d. RbOH

Question 17: Which of the following represents calcium chlorite?
a. Ca(ClO3)2
b.Ca(ClO2)2
c.CaClO2
d. Ca(ClO4)2

Question 18: The reaction of sodium is highly exothermic with water. The rate of reaction is lowered by:
a. lowering the temperature
b. mixing with alcohol
c. mixing with acetic acid
d. making an amalgam

Question 19: When Na2O2 is added to water, the peroxide ion serves as:
a. an oxidising agent
b. an reducing agent
c. a bronsted acid
d. a bronsted base

Question 20: In which of the following the hydration energy is higher than the lattice energy?
a. MgSO4
b. RaSO4
c. SrSO4
d. BaSO4

s-Block Elements / Alkali and Alkaline Earth Metals (NEET / JEE syllabus):
General characteristics, electronic configuration, occurrence, anomalous properties of the first element of each group, diagonal relationship, trends in the variation of properties (such as ionization enthalpy, atomic and ionic radii), trends in chemical reactivity with oxygen, water, hydrogen and halogens; uses of the compounds of Group I Elements (Alkali Metals) and Group II Elements (Alkaline Earth Metals). Preparation and Properties of Some important Compounds: sodium carbonate, sodium chloride, sodium hydroxide and sodium hydrogen carbonate, biological importance of sodium and potassium. Anomalous behaviour of beryllium. Industrial use lime and limestone, biological importance of Mg and Ca.
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India Study Solution - Hints and Solutions Chemistry MCQ Test Series
Alkali and Alkaline Earth Metals (s-Block Elements)
(Group 1 Elements: Alkali Metals; Group 2 Elements: Alkaline Earth Metals)
Solutions of Chemistry Test Series (MCQ) – Set 2 (Q. No.11–20)
Answer 11: a. Answer 12: a. Answer 13: c.
Answer 14: a. (Hint: NaNO3 is not used as gun powder because it is hygroscopic in nature and becomes wet by absorbing water molecules from the atmosphere).
Answer 15: d.
Answer 16: c. (Hint: Down the group the change in lattice energy is more than that of hydration energy).
Answer 17: b. Answer 18: d.
Answer 19: d. (Hint: When Na2O2 is added to water, the peroxide ion serves as a Bronsted base. The reaction takes place as –
Na2O2 + 2H2O → 2NaOH + H2O2
O22- ion accepts protons in this reaction hence it behaves as a Bronsted Base.
Therefore, (D) option is correct).
Answer 20: a.

 s-Block Elements (Alkali and Alkaline Earth Metals)
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