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1
JEE Main 2021 (Online) 17th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
The set of elements that differ in mutual relationship from those of the other sets is :
A
Li - Na
B
Be - Al
C
B - Si
D
Li - Mg
2
JEE Main 2021 (Online) 17th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
One of the by-products formed during the recovery of NH3 from Solvay process is :
A
Ca(OH)2
B
NH4Cl
C
NaHCO3
D
CaCl2
3
JEE Main 2021 (Online) 17th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
The correct order of conductivity of ions in water is :
A
K+ > Na+ > Cs+ > Rb+
B
Cs+ > Rb+ > K+ > Na+
C
Na+ > K+ > Rb+ > Cs+
D
Rb+ > Na+ > K+ > Li+
4
JEE Main 2021 (Online) 16th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
Given below are two statements :

Statement I : Both CaCl2 . 6H2O and MgCl2 . 8H2O undergo dehydration on heating.

Statement II : BeO is amphoteric whereas the oxides of other elements in the same group are acidic.

In the light of the above statements, choose the correct answer from the options given below :
A
Both statement I and statement II are false
B
Statement I is false but statement II is true
C
Statement I is true but statement II is false
D
Both statement I and statement II are true
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Some Basic Concepts of ChemistryStructure of AtomGaseous StateRedox ReactionsThermodynamicsEquilibriumSolid StateSolutionsElectrochemistryChemical Kinetics and Nuclear ChemistrySurface Chemistry
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