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Showing posts with label Alkali and Alkaline Earth Metals. Show all posts
Showing posts with label Alkali and Alkaline Earth Metals. Show all posts

Alkali and Alkaline Earth Metals: India Study Solution Test Series, Chemistry objective questions for JEE, NEET, other admission tests

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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
Hi Guys,
Welcome back to your own site India Study Solution
India Study Solution - representative image
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 especially for NEET, JEE (IIT) 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 in this site sitting at home just free of cost. How’s that !!
Please scroll down to find NEET and 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 3 (Q. No 21-30)


Question 21: A substance x is a compound of s-block element, substance X gives a violet colour in flame test, X is:
a. LiCl
b. MgCl
c. BaCl2
d. KCl

Question 22: During electrolysis of fused NaH, product obtained at anode
a. H2
b. O2
c. Na
d. H2O2

Question 23: Potassium carbonate is not prepared by:
a. Solvay process
b. Le-Blanc process
c. Prechts process
d. None of these

Question 24: Caustic soda is:
a. efflorescent
b. deliquescent
c. hygroscopic
d. oxidant

Question 25: Beryllium chloride can easily be hydrolysed, this is because
a. BeCl2 is covalent in nature
b. BeCl2 is ionic in nature
c. It has higher value of hydration energy due to smaller size of Be+2
d. It has higher value of hydration and lattice energy

Question 26: Sodium and potassium react with water much more vigorously than lithium because:
a. sodium and potassium have high values of hydration energy as compared to that of lithium
b. sodium and potassium have higher melting point than that of lithium
c. sodium and potassium have lower melting point than that of lithium
d. sodium and potassium have lower hydration energy than that of lithium

Question 27: Alkaline earth metals show:
a. divalency
b. monovalency
c. variable valency
d. zero valency

Question 28: Which one of the following compounds is a peroxide?
a. NO2
b. KO2
c. BaO2
d. MnO2

Question 29: Plaster of Paris hardens by:
a. giving off CO2
b. utilising water
c. changing into CaCO3
d. giving out water

Question 30: A is a s-block element and on reaction with nitrogen, it gives an ionic compound B. compound C and D is formed when B reacts with water. Solution of C becomes milky when CO2 is passed through it then in the above sequence of reaction, A and D are respectively
a. Ca, Ca(OH)2
b. Li, Ca(OH)2
c. Ca3N2, NH3
d. Ca, NH3

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.
>>>>> <<<<<
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 3 (Q. No.21–30)
Answer 21: d (Hint: In the flame test of KCl gives violet colour).
Answer 22: a. Answer 23: a. Answer 24: b. Answer 25: c.
Answer 26: c (Hint: When sodium and potassium react with water, the heat evolved causes them to melt, giving a larger area of contact with water, lithium on the other hand, does not melt under these condition and thus reacts more slowly. Melting points of Li, Na, and K are 180, 98 and 64 (0C) respectively).
Answer 27: a. Answer 28: c. Answer 29: b. Answer 30: d.
 s-Block Elements (Alkali and Alkaline Earth Metals)
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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

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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
Hi Guys,
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.
>>>>> <<<<<
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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s-Block Elements : India Study Solution Test Series, Chemistry objective questions for JEE, NEET, other admission tests

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s-Block Elements (Alkali Metals, Alkaline Earth Metals)
Chemistry India Study Solution Test Series (Confidence Booster)
NEET, JEE Main, Advanced, IIT, AIIMS, NTSE | Engineering, BDS, MBBS Admission Test
Welcome guys to your own site India Study Solution
https://www.indiastudysolution.com/2020/04/s-block-elements-india-study-solution-test-series-chemistry-objective-questions-for-jee-neet-s1.html
Here we bring you a new series of practice questions from chemistry: s-Block Elements or Alkali Metals (Group 1 elements) and Alkaline Earth Metals (Group 2 elements).
Each set comprising carefully selected, 10 MCQ questions with hints & solutions (given at the end) from our Chemistry Solutions exclusively from Group-I and Group-II elements of Periodic Table.
In each set you will find a combination of typically important some basic and also advanced level questions very helpful in the preparation of NEET-UG, JEE Main & Advanced (IIT) AIIMS, IMS BHU, JIPMER, COMEDK, MBBS Admission Tests, Engineering Entrance Exams, NEST and other such competitive exams.
Please scroll down to find NEET and JEE syllabus of s-Block elements.


Chemistry Practice Questions: s-Block Elements
(Group 1 Elements: Alkali Metals; Group 2 Elements: Alkaline Earth Metals)
India Study Solution MCQ Test Series – Set 1 (Q. No 1-10)
Question 1: Among the alkaline earth metals, the element forming predominantly covalent compound is:
a. Ba
b. Sr
c. Ca
d. Be

Question 2: CsOH is
a. Strongly basic
b. Weakly
c. Slightly acidic
d. Amphoteric

Question 3: Hydrogen is prepared from H2O by adding
a. Ca, which acts as reducing agent
b. Al, which acts as oxidising agent
c. Ag, which acts as reducing agent
d. Au, which acts as oxidising agent

Question 4: Which of the following statement is incorrect?
a. Mg and Ca both impact characteristic colour to the flame.
b. The metallic radius of Na is greater than that of Mg
c. Metallic bond of Mg is stronger than the metallic bond in Na
d. Melting point of Mg is greater than melting point of Ca.

Question 5: Based on lattice energy and other considerations which one of the following alkali metal chloride is expected to have highest melting point?
a. LiCl
b. NaCl
c. KCl
d. RbCl

Question 6: Which of the following has lowest melting point?
a. Li
b. Na
c. K
d. Cs

Question 7: Which of the following metals is used for drying organic solvents?
a. Magnesium
b. Sodium
c. Platinum
d. Nickel

Question 8: Select the incorrect option.
a. Sodium peroxide dissolves in water giving H2O2 and NaOH.
b. Both LiNO3 and NaNO3 on heating separately decompose and each liberates two gases NO2 and O2.
c. Solvay process cannot be used for the manufacture of potassium hydrogen carbonate.
d. Alkali metals are prepared only by the electrolysis of their fused chlorides.

Question 9: Which of the following element is responsible for oxidation of water to O2 in biological processes?
a. Cu
b. Mo
c. Fe
d. Mn

Question 10: The incorrect statement among the following is:
a. Beryllium hydroxide is amphoteric in nature.
b. Solubility of sulphates of second group elements decreases down the group.
c. Reducing power of hydride of alkali metal decreases down the group.
d. Beryllium has diagonal relationship with aluminium.

s-Block Elements (Syllabus for NEET and JEE):
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.
>>>>>>>> <<<<<<<<
India Study Solution - Hints and Solutions Chemistry MCQ Test Series
s-Block Elements
(Group 1 Elements: Alkali Metals; Group 2 Elements: Alkaline Earth Metals)
Solutions of Chemistry Test Series (MCQ) – Set 1 (Q. No.1–10)
Answer 1: d. (Hint: Be has higher polarising power on account of smallest size of atom).
Answer 2: a. Answer 3: a.
Answer 4: a. (Hint: Mg does not impact colour to the flame but sodium gives golden yellow colour).
Answer 5: b. (Hint: On the basis of lattice energy, the melting point decreases in the alkali group as lattice energy decreases with the increase of the atomic number. However, LiCl has covalent character due to very small size of Li+ ion. Hence, melting point of NaCl is highest among the above chlorides).
Answer 6: d. (Hint: The metallic bond is purely the electric attraction between the mobile electrons and positive part of the atom, the kernel. This electrical attraction depends upon the (i) number of mobile electrons per atom and (ii) the size of the atom. The strength of metallic bond is weakest in Cs metallic lattice amongst these elements because of largest atomic radius).
Answer 7: b. Answer 8: b. Answer 9: d.
Answer 10: c. (Hint:
a. Beryllium hydroxide is amphoteric in nature as it reacts with acid and alkali both.
Be(OH)2 + 2OH → [Be(OH)4]2- (beryllate ion)
Be(OH)2 + 2HCl + 2H2O → [Be(OH2)4]Cl2.
b. The solubility of the alkaline earth metal sulphate decreases down the group from Be to Ba. This is because of the fact that down the group with increasing size of cation the lattice energy as well as hydration energy also decrease but the change in hydration energy is more as compare that of lattice energy.
c. Down the group, the bond dissociation enthalpies decrease from LiH to CsH. So reducing power of hydride of alkali metal increases down the group.
d. The ionic radius of Be2+ is estimated to be 31 pm; the charge/radius ratio is nearly the same as that of the Al3+ ion. Hence, beryllium has diagonal relationship with aluminium.
So, option c. is incorrect).

 s-Block Elements (Alkali and Alkaline Earth Metals): More questions to follow

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