1
JEE Main 2019 (Online) 12th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The ratio of number of atoms present in a simple cubic, body centered cubic and face centered cubic structure are, respectively :
A
8 : 1 : 6
B
4 : 2 : 1
C
1 : 2 : 4
D
4 : 2 : 3
2
JEE Main 2019 (Online) 12th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
In comparison to boron, berylium has :
A
lesser nuclear charge and greater first ionisation enthalpy
B
greater nuclear charge and greater first ionisation enthalpy
C
greater nuclear charge and lesser first ionisation enthalpy
D
lesser nuclear charge and lesser first ionisation ethalpy
3
JEE Main 2019 (Online) 12th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The temporary hardness of a water sample is due to compound X. Boiling this sample converts X to compound Y. X and Y, respectively, are :
A
Mg(HCO3)2 and MgCO3
B
Ca(HO3)2 and CaO
C
Ca(HCO3)2 and Ca(OH)2
D
Mg(HCO3)2 and Mg(OH)2
4
JEE Main 2019 (Online) 12th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The compound used in the treatment of lead poisoning is :
A
desferrioxime B
B
Cis-platin
C
D-penicillamine
D
EDTA
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