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1
JEE Main 2017 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The number of S = O and S − OH bonds present in peroxodisulphuric acid and pyrosulphuric acid respectively are :
A
(2 and 2) and (2 and 2)
B
(2 and 4) and (2 and 4)
C
(4 and 2) and (2 and 4)
D
(4 and 2) and (4 and 2)
2
JEE Main 2017 (Offline)
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The products obtained when chlorine gas reacts with cold and dilute aqueous NaOH are :
A
Cl- and $$ClO_2^ - $$
B
ClO- and $$ClO_3^ - $$
C
Cl- and ClO-
D
$$ClO_2^ - $$ and $$ClO_3^ - $$
3
JEE Main 2016 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Aqueous solution of which salt will not contain ions with the electronic configuration 1s22s22p63s23p6 ?
A
NaF
B
NaCl
C
KBr
D
CaI2
4
JEE Main 2016 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Assertion :     Among the carbon allotropes, diamond is an insulator, whereas, graphite is a good conductor of electricity.

Reason :     Hybridization of carbon in diamond and graphite are sp3 and sp2, respectively.
A
Both assertion and reason are correct, and the reason is the correct explanation for the assertion.
B
Both assertion and reason are correct, but the reason is not the correct explanation for the assertion
C
Assertion is incorrect statement, but the reason is correct.
D
Both assertion and reason are incorrect.
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