1
JEE Main 2023 (Online) 10th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The compound which does not exist is

A
(NH$$_4$$)$$_2$$BeF$$_4$$
B
PbEt$$_4$$
C
BeH$$_2$$
D
NaO$$_2$$
2
JEE Main 2023 (Online) 10th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The number of molecules and moles in 2.8375 litres of O$$_2$$ at STP are respectively

A
1.505 $$\times$$ 10$$^{23}$$ and 0.250 mol
B
7.527 $$\times$$ 10$$^{22}$$ and 0.250 mol
C
7.527 $$\times$$ 10$$^{23}$$ and 0.125 mol
D
7.527 $$\times$$ 10$$^{22}$$ and 0.125 mol
3
JEE Main 2023 (Online) 10th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The one that does not stabilize 2$$^\circ$$ and 3$$^\circ$$ structures of proteins is

A
$$-$$O $$-$$O $$-$$linkage
B
$$-$$S $$-$$S $$-$$linkage
C
van der Waals forces
D
H-bonding
4
JEE Main 2023 (Online) 10th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The major product 'P' formed in the given reaction is

JEE Main 2023 (Online) 10th April Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 34 English

A
JEE Main 2023 (Online) 10th April Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 34 English Option 1
B
JEE Main 2023 (Online) 10th April Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 34 English Option 2
C
JEE Main 2023 (Online) 10th April Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 34 English Option 3
D
JEE Main 2023 (Online) 10th April Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 34 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