1
JEE Main 2019 (Online) 12th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The correct order for acid strength of compounds :

CH $$ \equiv $$ CH, CH3–C $$ \equiv $$ CH and CH2 = CH2 is as follows
A
CH $$ \equiv $$ CH > CH2 = CH2 > CH3 – C $$ \equiv $$ CH
B
CH3 – C $$ \equiv $$ CH > CH2 = CH2 > HC $$ \equiv $$ CH
C
HC $$ \equiv $$ CH > CH3 – C $$ \equiv $$ CH > CH2 = CH2
D
CH3 – CH $$ \equiv $$ CH > CH $$ \equiv $$ CH > CH2 = CH2
2
JEE Main 2019 (Online) 12th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The element with Z = 120 (not yet discovered) will be an/a -
A
Alkaline earth metal
B
Alkali metal
C
Transition metal
D
Inner transition metal
3
JEE Main 2019 (Online) 12th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The pair of metal ions that can give a spin only magnetic moment of 3.9 BM for the complex [M(H2O)6]Cl2, is -
A
V2+ and Fe2+
B
V2+ and Co2+
C
Co2+ and Fe2+
D
Cr2+ and Mn2+
4
JEE Main 2019 (Online) 12th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Among the following four aromatic compounds, which one will have the lowest melting point ?
A
JEE Main 2019 (Online) 12th January Morning Slot Chemistry - Basics of Organic Chemistry Question 172 English Option 1
B
JEE Main 2019 (Online) 12th January Morning Slot Chemistry - Basics of Organic Chemistry Question 172 English Option 2
C
JEE Main 2019 (Online) 12th January Morning Slot Chemistry - Basics of Organic Chemistry Question 172 English Option 3
D
JEE Main 2019 (Online) 12th January Morning Slot Chemistry - Basics of Organic Chemistry Question 172 English Option 4
JEE Main Papers
2023
2021
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12