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Test: Alkali & Alkaline Metal Compounds (Old NCERT) - NEET MCQ


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10 Questions MCQ Test Chemistry Class 11 - Test: Alkali & Alkaline Metal Compounds (Old NCERT)

Test: Alkali & Alkaline Metal Compounds (Old NCERT) for NEET 2024 is part of Chemistry Class 11 preparation. The Test: Alkali & Alkaline Metal Compounds (Old NCERT) questions and answers have been prepared according to the NEET exam syllabus.The Test: Alkali & Alkaline Metal Compounds (Old NCERT) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Alkali & Alkaline Metal Compounds (Old NCERT) below.
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Test: Alkali & Alkaline Metal Compounds (Old NCERT) - Question 1

BeSO4 is water soluble while CaSO4 is not. This is because of:​

Detailed Solution for Test: Alkali & Alkaline Metal Compounds (Old NCERT) - Question 1

High hydration enthalpy of BeSO4 overpowers its lattice enthalpy thus is water soluble.

Test: Alkali & Alkaline Metal Compounds (Old NCERT) - Question 2

An alkaline earth metal nitrate on thermal decomposition yields:​

Detailed Solution for Test: Alkali & Alkaline Metal Compounds (Old NCERT) - Question 2

Alkaline earth metal nitrates are prepared in solution and can be crystallized as hydrated salt by the action of HNO3 on oxides ,hydroxides and carbonates.

MO + 2 HNO3 ——> M(NO3)2 + H2O

M(OH)2 + 2 HNO3 ———> M(NO3)2 + 2 H2O

MCO3 + 2 HNO3 ———> M(NO3)2 + H2O + CO2 

Tendency to form hydrates decreases with increasing size and decreasing hydration enthalpy down the group.

All nitrates are soluble in water and decompose on heating to give the corresponding oxides with evolution of NO2 and O2.

Strontium and barium nitrate are used in pyrotechnics for giving red and green flames.

Test: Alkali & Alkaline Metal Compounds (Old NCERT) - Question 3

We can get beryllium hydride by:​

Detailed Solution for Test: Alkali & Alkaline Metal Compounds (Old NCERT) - Question 3

BeCl2 + LiAlH4 give 2BeH2 + LiCl and AlCl3
However, other elements of group 2 combine with hydrogen upon heating to form MH2

Test: Alkali & Alkaline Metal Compounds (Old NCERT) - Question 4

Solubility of s block halides in water depends upon:

Detailed Solution for Test: Alkali & Alkaline Metal Compounds (Old NCERT) - Question 4

Solubility of an ionic compound in water depends upon lattice energy of compound and hydration energy of ions.

Test: Alkali & Alkaline Metal Compounds (Old NCERT) - Question 5

Carbonates of alkali and alkaline earth metals differ in:

Detailed Solution for Test: Alkali & Alkaline Metal Compounds (Old NCERT) - Question 5

All the alkali metals have an electron in their outermost shell and all the alkaline earth metals have two outer electrons. To achieve the noble gas configuration, alkali metals need to lose one electron (valence is “one”), whereas alkaline earth metals need to remove two electrons (valence is “two”).

Test: Alkali & Alkaline Metal Compounds (Old NCERT) - Question 6

Cs reacts with chlorine to form:​

Detailed Solution for Test: Alkali & Alkaline Metal Compounds (Old NCERT) - Question 6

Cesium is an alkali metal, like sodium; hence, it forms a salt, cesium chloride (CsCl) similar to table salt, sodium chloride.CsCl looks like most salts:It's worth noting that the formation of salts is highly exothermic, that is, if you were to get cesium metal and gaseous chlorine to combine to form this salt, the reaction would produce a lot of heat along the way!

Test: Alkali & Alkaline Metal Compounds (Old NCERT) - Question 7

The alkali metals are low melting. Which of the following alkali metal is expected to melt if the room temperature rises to 30°C?

Detailed Solution for Test: Alkali & Alkaline Metal Compounds (Old NCERT) - Question 7

Among alkali metals, melting point decreases as the strength of metallic bonding decreases with increasing size of the atom. Thus, Cs has the lowest melting point (28.5°C) and will melt at 30°C.

Test: Alkali & Alkaline Metal Compounds (Old NCERT) - Question 8

Beryllium hydride is a —— compound.

Detailed Solution for Test: Alkali & Alkaline Metal Compounds (Old NCERT) - Question 8

This alkaline earth hydride is a colourless solid that is insoluble in solvents that do not decompose it. Unlike the ionically bonded hydrides of the heavier Group 2 elements, beryllium hydride is covalently bonded (three-center two-electron bond).

Test: Alkali & Alkaline Metal Compounds (Old NCERT) - Question 9

What is the oxidation state of Rb in RbO2?

Detailed Solution for Test: Alkali & Alkaline Metal Compounds (Old NCERT) - Question 9

The oxidation state of superoxide is -1/2 . and there is two superoxide so oxidation state of Rb is +1.

Test: Alkali & Alkaline Metal Compounds (Old NCERT) - Question 10

Alkaline earth metals combine with halogens to form:​

Detailed Solution for Test: Alkali & Alkaline Metal Compounds (Old NCERT) - Question 10

Alkaline earth metals have valency +2. So on reaction with halogen, they form compounds MX2.

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