1
JEE Main 2023 (Online) 25th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Which of the following statements is incorrect for antibiotics?

A
An antibiotic should promote the growth or survival of microorganisms.
B
An antibiotic must be a product of metabolism.
C
An antibiotic should be effective in low concentrations.
D
An antibiotic is a synthetic substance produced as a structural analogue of naturally occurring antibiotic.
2
JEE Main 2023 (Online) 25th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The compound which will have the lowest rate towards nucleophilic aromatic substitution on treatment with OH$$^-$$ is

A
JEE Main 2023 (Online) 25th January Morning Shift Chemistry - Haloalkanes and Haloarenes Question 38 English Option 1
B
JEE Main 2023 (Online) 25th January Morning Shift Chemistry - Haloalkanes and Haloarenes Question 38 English Option 2
C
JEE Main 2023 (Online) 25th January Morning Shift Chemistry - Haloalkanes and Haloarenes Question 38 English Option 3
D
JEE Main 2023 (Online) 25th January Morning Shift Chemistry - Haloalkanes and Haloarenes Question 38 English Option 4
3
JEE Main 2023 (Online) 25th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II

List I
Elements
List II
Colour imparted to the flame
A. K I. Brick Red
B. Ca II. Violet
C. Sr III. Apple Green
D. Ba IV. Crimson Red

Choose the correct answer from the options given below :

A
A-II, B-IV, C-I, D-III
B
A-II, B-I, C-IV, D-III
C
A-II, B-I, C-III, D-IV
D
A-IV, B-III, C-II, D-I
4
JEE Main 2023 (Online) 25th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Identify the product formed (A and E)

JEE Main 2023 (Online) 25th January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 48 English

A
JEE Main 2023 (Online) 25th January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 48 English Option 1
B
JEE Main 2023 (Online) 25th January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 48 English Option 2
C
JEE Main 2023 (Online) 25th January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 48 English Option 3
D
JEE Main 2023 (Online) 25th January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 48 English Option 4
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