This chapter is currently out of syllabus
1
JEE Main 2019 (Online) 10th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
A hydrated solid X on heating initially gives a monohydrated compound Y. Y upon heating above 373 K leads to an anhydrous white powder Z. X and Z, respectively, are :
A
Baking soda and dead burnt plaster.
B
Washing soda and soda ash
C
Washing soda and dead burnt plaster.
D
Baking soda and soda as.
2
JEE Main 2019 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The alloy used in the construction of aircrafts is :
A
Mg – Zn
B
Mg – Al
C
Mg – Mn
D
Mg – Sn
3
JEE Main 2019 (Online) 9th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The structures of beryllium chloride in the solid state and vapour, phase, respectively,are :
A
chain and chain
B
dimeric and chain
C
chain and dimeric
D
dimeric and dimeric
4
JEE Main 2019 (Online) 9th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Magnisium powder burns in air to give :
A
MgO and Mg3N2
B
MgO only
C
Mg(NO3)2 and Mg3N2
D
MgO and Mg(NO3)2
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