1
JEE Main 2021 (Online) 25th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Which one of the following statements is FALSE for hydrophilic sols?
A
They do not require electrolytes for stability.
B
The sols cannot be easily coagulated.
C
These sols are reversible in nature.
D
Their viscosity is of the order of that of H2O.
2
JEE Main 2021 (Online) 25th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Carbylamine test is used to detect the presence of primary amino group in an organic compound. Which of the following compound is formed when this test is performed with aniline?
A
JEE Main 2021 (Online) 25th February Evening Shift Chemistry - Compounds Containing Nitrogen Question 119 English Option 1
B
JEE Main 2021 (Online) 25th February Evening Shift Chemistry - Compounds Containing Nitrogen Question 119 English Option 2
C
JEE Main 2021 (Online) 25th February Evening Shift Chemistry - Compounds Containing Nitrogen Question 119 English Option 3
D
JEE Main 2021 (Online) 25th February Evening Shift Chemistry - Compounds Containing Nitrogen Question 119 English Option 4
3
JEE Main 2021 (Online) 25th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Which of the following is correct structure of $$\alpha$$-anomer of maltose?
A
JEE Main 2021 (Online) 25th February Evening Shift Chemistry - Biomolecules Question 84 English Option 1
B
JEE Main 2021 (Online) 25th February Evening Shift Chemistry - Biomolecules Question 84 English Option 2
C
JEE Main 2021 (Online) 25th February Evening Shift Chemistry - Biomolecules Question 84 English Option 3
D
JEE Main 2021 (Online) 25th February Evening Shift Chemistry - Biomolecules Question 84 English Option 4
4
JEE Main 2021 (Online) 25th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Which of the following compound is added to the sodium extract before addition of silver nitrate for testing of halogens?
A
Nitric acid
B
Sodium hydroxide
C
Ammonia
D
Hydrochloric acid
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