1
JEE Main 2021 (Online) 22th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
The set having ions which are coloured and paramagnetic both is :
A
Cu2+, Cr3+, Sc+
B
Cu2+, Zn2+, Mn4+
C
Sc3+, V5+, Ti4+
D
Ni2+, Mn7+, Hg2+
2
JEE Main 2021 (Online) 22th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Thiamine and pyridoxine are also known respectively as :
A
Vitamin B2 and Vitamin E
B
Vitamin E and Vitamin B2
C
Vitamin B6 and Vitamin B2
D
Vitamin B1 and Vitamin B6
3
JEE Main 2021 (Online) 22th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
An organic compound A (C6H6O) gives dark green colouration with ferric chloride. On treatment with CHCl3 and KOH, followed by acidification gives compound B. Compound B can also be obtained from compound C on reaction with pyridinium chlorochromate (PCC). Identify A, B and C.
A
JEE Main 2021 (Online) 22th July Evening Shift Chemistry - Alcohols, Phenols and Ethers Question 100 English Option 1
B
JEE Main 2021 (Online) 22th July Evening Shift Chemistry - Alcohols, Phenols and Ethers Question 100 English Option 2
C
JEE Main 2021 (Online) 22th July Evening Shift Chemistry - Alcohols, Phenols and Ethers Question 100 English Option 3
D
JEE Main 2021 (Online) 22th July Evening Shift Chemistry - Alcohols, Phenols and Ethers Question 100 English Option 4
4
JEE Main 2021 (Online) 22th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Which one of the following reactions does not occur?
A
JEE Main 2021 (Online) 22th July Evening Shift Chemistry - Compounds Containing Nitrogen Question 136 English Option 1
B
JEE Main 2021 (Online) 22th July Evening Shift Chemistry - Compounds Containing Nitrogen Question 136 English Option 2
C
JEE Main 2021 (Online) 22th July Evening Shift Chemistry - Compounds Containing Nitrogen Question 136 English Option 3
D
JEE Main 2021 (Online) 22th July Evening Shift Chemistry - Compounds Containing Nitrogen Question 136 English Option 4
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