1
JEE Main 2019 (Online) 12th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Chlorine on reaction with hot and concentrated sodium hydroxide give -
A
C$$\ell $$O$$_3^ - $$ and C$$\ell $$O$$_2^ - $$
B
C$$\ell $$$$-$$ and C$$\ell $$O$$-$$
C
C$$\ell $$$$-$$ and C$$\ell $$O$$_2^ - $$
D
C$$\ell $$$$-$$ and C$$\ell $$O$$_3^ - $$
2
JEE Main 2019 (Online) 11th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
The hydride that is NOT electron deficient
A
B2H6
B
AlH3
C
GaH3
D
SiH4
3
JEE Main 2019 (Online) 11th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
The element that usually does NOT show variable oxidation states is :
A
V
B
Cu
C
Sc
D
ti
4
JEE Main 2019 (Online) 10th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Hall- Heroult's process is given by
A
Cu2+ (aq) + H2(g) $$ \to $$ Cu(s) + 2H+ (aq)
B
Cr2O3 + 2AI  $$ \to $$ Al2O3 + 2Cr
C
2Al2O3 + 3C  $$ \to $$ 4Al + 3CO2
D
ZnO + C   $$\buildrel {Coke,\,1673\,K} \over \longrightarrow $$ Zn + CO
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