1
JEE Main 2019 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Diborane (B2H6) reacts with O2 and H2O independently, then products formed are :
A
B2O3 and HBO2
B
B2O3 and H3BO3
C
HBO2 and H3BO3
D
HBO2 and HBO3
2
JEE Main 2019 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Assertion : Ozone is destroyed by CFCs in the upper stratosphere.

Reason : Ozone holes increase the amount of UV radiation the earth.
A
Assertion and reason are both correct, and the reason is the correct explanation for the assertion.
B
Assertion and reason are incorrect.
C
Assertion and reason are correct but, the reason is not the explanation for the assertion
D
Assertion is false, but the reason is correct.
3
JEE Main 2019 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Adsorption of a gas follows freundlich adosorbed isotherm. x is the mass of the gas adsorbed on mass m of the adsorbent. The plot log $$x \over m$$ versus log p is shown in the given graph. $$x \over m$$ is proportional to : JEE Main 2019 (Online) 8th April Morning Slot Chemistry - Surface Chemistry Question 86 English
A
p2/3
B
p3
C
p2
D
p3/2
4
JEE Main 2019 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
An organic compound 'X' showing the following solubility profile is : JEE Main 2019 (Online) 8th April Morning Slot Chemistry - Practical Organic Chemistry Question 87 English
A
o-Toluidine
B
Benzamide
C
Oleic acid
D
m-Cresol
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