1
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
2
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
3
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
4
JEE Main 2023 (Online) 10th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Prolonged heating is avoided during the preparation of ferrous ammonium sulphate to :

A
prevent hydrolysis
B
prevent breaking
C
prevent oxidation
D
prevent reduction
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