1
JEE Main 2019 (Online) 9th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The standard Gibbs energy for the given cell reaction in kJ mol–1 at 298 K is :

Zn(s) + Cu2+ (aq) $$ \to $$ Zn2+ (aq) + Cu (s),

E° = 2 V at 298 K

(Faraday's constant, F = 96000 C mol–1)
A
384
B
–192
C
–384
D
192
2
JEE Main 2019 (Online) 9th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Consider the van der Waals constants, a and b, for the following gases.

Gas Ar Ne Kr Xe
a/ (atm dm6 mol–2) 1.3 0.2 5.1 4.1
b/ (10–2 dm3 mol–1) 3.2 1.7 1.0 5.0

Which gas is expected to have the highest critical temperature?
A
Ne
B
Kr
C
Xe
D
Ar
3
JEE Main 2019 (Online) 9th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The major product of the following reaction is : JEE Main 2019 (Online) 9th April Morning Slot Chemistry - Alcohols, Phenols and Ethers Question 112 English
A
JEE Main 2019 (Online) 9th April Morning Slot Chemistry - Alcohols, Phenols and Ethers Question 112 English Option 1
B
JEE Main 2019 (Online) 9th April Morning Slot Chemistry - Alcohols, Phenols and Ethers Question 112 English Option 2
C
JEE Main 2019 (Online) 9th April Morning Slot Chemistry - Alcohols, Phenols and Ethers Question 112 English Option 3
D
JEE Main 2019 (Online) 9th April Morning Slot Chemistry - Alcohols, Phenols and Ethers Question 112 English Option 4
4
JEE Main 2019 (Online) 9th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The ore that contains the metal in the form of fluoride is :
A
sphalerite
B
magnetite
C
malachite
D
cryolite
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