1
JEE Main 2020 (Online) 9th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following reactions will not produce a racemic product?
A
JEE Main 2020 (Online) 9th January Evening Slot Chemistry - Haloalkanes and Haloarenes Question 100 English Option 1
B
JEE Main 2020 (Online) 9th January Evening Slot Chemistry - Haloalkanes and Haloarenes Question 100 English Option 2
C
JEE Main 2020 (Online) 9th January Evening Slot Chemistry - Haloalkanes and Haloarenes Question 100 English Option 3
D
JEE Main 2020 (Online) 9th January Evening Slot Chemistry - Haloalkanes and Haloarenes Question 100 English Option 4
2
JEE Main 2020 (Online) 9th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Which polymer has 'chiral' monomer(s) ?
A
Nylon 6,6
B
Buna-N
C
PHBV
D
Neoprene
3
JEE Main 2020 (Online) 9th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Biochemical Oxygen Demand (BOD) is the amount of oxygen required (in ppm) :
A
for sustaining life in a water body.
B
by anaerobic bacteria to breakdown inorganic waste present in a water body.
C
for the photochemical breakdown of waste present in 1 m3 volume of a water body.
D
by bacteria to break-down organic waste in a certain volume of a water sample.
4
JEE Main 2020 (Online) 9th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Among the statements (a)-(d) the correct ones are :

(a) Lithium has the highest hydration enthalpy among the alkali metals.

(b) Lithium chloride is insoluble in pyridine.

(c) Lithium cannot form ethynide upon its reaction with ethyne.

(d) Both lithium and magnesium react slowly with H2O.
A
(b) and (c) only
B
(a) and (d) only
C
(a), (b) and (d) only
D
(a), (c) and (d) only
JEE Main Papers
2023
2021
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12