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1
JEE Main 2021 (Online) 25th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
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The correct decreasing order of densities of the following compounds is :

JEE Main 2021 (Online) 25th July Evening Shift Chemistry - Basics of Organic Chemistry Question 127 English
A
(D) > (C) > (B) > (A)
B
(C) > (D) > (A) > (B)
C
(C) > (B) > (A) > (D)
D
(A) > (B) > (C) > (D)
2
JEE Main 2021 (Online) 25th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
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Which among the following is the strongest acid ?
A
$$C{H_3}C{H_2}C{H_2}C{H_3}$$
B
JEE Main 2021 (Online) 25th July Evening Shift Chemistry - Basics of Organic Chemistry Question 128 English Option 2
C
JEE Main 2021 (Online) 25th July Evening Shift Chemistry - Basics of Organic Chemistry Question 128 English Option 3
D
JEE Main 2021 (Online) 25th July Evening Shift Chemistry - Basics of Organic Chemistry Question 128 English Option 4
3
JEE Main 2021 (Online) 25th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
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Which one among the following resonating structures is not correct?
A
JEE Main 2021 (Online) 25th July Morning Shift Chemistry - Basics of Organic Chemistry Question 129 English Option 1
B
JEE Main 2021 (Online) 25th July Morning Shift Chemistry - Basics of Organic Chemistry Question 129 English Option 2
C
JEE Main 2021 (Online) 25th July Morning Shift Chemistry - Basics of Organic Chemistry Question 129 English Option 3
D
JEE Main 2021 (Online) 25th July Morning Shift Chemistry - Basics of Organic Chemistry Question 129 English Option 4
4
JEE Main 2021 (Online) 22th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
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Which purification technique is used for high boiling organic liquid compound (decomposes near its boiling point)?
A
Simple distillation
B
Steam ditillation
C
Fractional distillation
D
Reduced pressure distillation
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