1
JEE Main 2017 (Offline)
MCQ (Single Correct Answer)
+4
-1
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Which of the following molecules is least resonance stabilized?
A
JEE Main 2017 (Offline) Chemistry - Basics of Organic Chemistry Question 268 English Option 1
B
JEE Main 2017 (Offline) Chemistry - Basics of Organic Chemistry Question 268 English Option 2
C
JEE Main 2017 (Offline) Chemistry - Basics of Organic Chemistry Question 268 English Option 3
D
JEE Main 2017 (Offline) Chemistry - Basics of Organic Chemistry Question 268 English Option 4
2
JEE Main 2017 (Offline)
MCQ (Single Correct Answer)
+4
-1
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The group having isoelectronic species is:
A
O2- , F- , Na+, Mg2+
B
O2- , F- , Na, Mg2+
C
O- , F- , Na+, Mg2+
D
O- , F- , Na, Mg+
3
JEE Main 2017 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
3-Methyl-pent-2-ene on reaction with HBr in presence of peroxide forms an addition product. The number of possible stereoisomers for the product is :
A
Zero
B
Two
C
Four
D
Six
4
JEE Main 2017 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
Sodium salt of an organic acid ‘X’ produces effervescence with conc. H2SO4. ‘X’ reacts with the acidified aqueous CaCl2 solution to give a white precipitate which decolourises acidic solution of KMnO4. ‘X’ is :
A
CH3COONa
B
Na2C2O4
C
C6H5COONa
D
HCOONa

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