1
JEE Main 2019 (Online) 12th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Thermal decomposition of a Mn compound (X) at 513 K results in compound Y, MnO2 and gaseous product. MnO2 reacts with NaCl and concentrated H2O4 to give a pungent gas Z. X, Y and Z, respectively, are :
A
KMnO4, K2MnO4 and Cl2
B
K2MnO4, KMnO4 and SO2
C
K3MnO4, K2MnO4 and Cl2
D
K2MnO4, KMnO4 and Cl2
2
JEE Main 2019 (Online) 12th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The primary pollutant that leads to photochemical smog is :
A
acrolein
B
ozone
C
sulphur dioxide
D
nitrogen oxides
3
JEE Main 2019 (Online) 12th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The INCORRECT match in the following is :
A
$$\Delta $$Go = 0, K = 1
B
$$\Delta $$Go < 0, K < 1
C
$$\Delta $$Go > 0, K < 1
D
$$\Delta $$Go < 0, K > 1
4
JEE Main 2019 (Online) 12th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The INCORRECT statement is :
A
Lithium is least reactive with water among the alkali metals
B
LiCl crystallises from aqueous solution as LiCl.2H2O
C
Lithium is the strongest reducing agent among the alkali metals
D
LiNO3 decomposes on heating to give LiNO2 and O2
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