EASY
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Hydrolysis of sodium peroxide with hot water is an example of an endothermic reaction.

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Important Questions on The s-Block Elements

EASY
Chemistry>Inorganic Chemistry>The s-Block Elements>General Characteristics of the Compounds of the Alkali Metals
Choose the incorrect statement.
HARD
Chemistry>Inorganic Chemistry>The s-Block Elements>General Characteristics of the Compounds of the Alkali Metals
Which of the following salt would give SO2 with hot and dil H2SO4 and also decolourises Br2 water?
MEDIUM
Chemistry>Inorganic Chemistry>The s-Block Elements>General Characteristics of the Compounds of the Alkali Metals
On strong heating, the nitrate of which metal does not produce nitrogen dioxide?
EASY
Chemistry>Inorganic Chemistry>The s-Block Elements>General Characteristics of the Compounds of the Alkali Metals
The metal nitrate that liberates NO2 on heating
MEDIUM
Chemistry>Inorganic Chemistry>The s-Block Elements>General Characteristics of the Compounds of the Alkali Metals
Why is Li2CO3 decomposed at a lower temperature whereas Na2CO3 at higher temperature?        
HARD
Chemistry>Inorganic Chemistry>The s-Block Elements>General Characteristics of the Compounds of the Alkali Metals
Which of the following compounds is / are partially soluble or insoluble in NH4OH solution :
1) Fe(OH)3     2) Ag2CrO4     3) Al(OH)3     4) Ag2CO3     5) Ni(OH)2
MEDIUM
Chemistry>Inorganic Chemistry>The s-Block Elements>General Characteristics of the Compounds of the Alkali Metals
Which of the following metals has stable carbonates?
EASY
Chemistry>Inorganic Chemistry>The s-Block Elements>General Characteristics of the Compounds of the Alkali Metals
What are the metal ions present in carnallite?
EASY
Chemistry>Inorganic Chemistry>The s-Block Elements>General Characteristics of the Compounds of the Alkali Metals
Which of the following metals has stable carbonates?
MEDIUM
Chemistry>Inorganic Chemistry>The s-Block Elements>General Characteristics of the Compounds of the Alkali Metals
Nitrogen dioxide cannot be prepared by heating.
HARD
Chemistry>Inorganic Chemistry>The s-Block Elements>General Characteristics of the Compounds of the Alkali Metals
Which of the following order are correct ?

(i)  Solubility in water LiOH < NaOH < KOH < RbOH < CsOH

(ii) Thermal stability BeSO4 < MgSO4 < CaSO4 < SrSO4 < BaSO4

(iii)  Melting point NaCl > KCl > RbCl > CsCl > LiCl

(iv)  Solubility in water Li2CO3 < Na2CO3 < K2CO3< Rb2CO3
MEDIUM
Chemistry>Inorganic Chemistry>The s-Block Elements>General Characteristics of the Compounds of the Alkali Metals
Which one of the following statements is true for all the alkali metals ?
HARD
Chemistry>Inorganic Chemistry>The s-Block Elements>General Characteristics of the Compounds of the Alkali Metals
A greenish yellow gas reacts with an alkali metal hydroxide to form a halate which can be used in fireworks and safety matches. The gas and the halate are :
EASY
Chemistry>Inorganic Chemistry>The s-Block Elements>General Characteristics of the Compounds of the Alkali Metals
CO2 cannot be obtained by heating:
MEDIUM
Chemistry>Inorganic Chemistry>The s-Block Elements>General Characteristics of the Compounds of the Alkali Metals
Which product is formed in the following reaction?

2 KO 2 + S → Heat Product
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Chemistry>Inorganic Chemistry>The s-Block Elements>General Characteristics of the Compounds of the Alkali Metals
The carbonate of which of the following cation is insoluble in water?
MEDIUM
Chemistry>Inorganic Chemistry>The s-Block Elements>General Characteristics of the Compounds of the Alkali Metals
Which of the metal carbonates is most stable thermally?
MEDIUM
Chemistry>Inorganic Chemistry>The s-Block Elements>General Characteristics of the Compounds of the Alkali Metals
Select the incorrect statement.
EASY
Chemistry>Inorganic Chemistry>The s-Block Elements>General Characteristics of the Compounds of the Alkali Metals

Which of the following carbonates decomposes most readily on heating?

EASY
Chemistry>Inorganic Chemistry>The s-Block Elements>General Characteristics of the Compounds of the Alkali Metals
Select the correct statements.