1
JEE Main 2019 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
A process will be spontaneous at all temperatures if :
A
$$\Delta $$H < 0 and $$\Delta $$S > 0
B
$$\Delta $$H < 0 and $$\Delta $$S < 0
C
$$\Delta $$H > 0 and $$\Delta $$S < 0
D
$$\Delta $$H > 0 and $$\Delta $$S > 0
2
JEE Main 2019 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The principle of column chromatography is :
A
Gravitational force.
B
Capillary action.
C
Differential adsorption of the substances on the solid phase.
D
Differential absorption of the substances on the solid phase.
3
JEE Main 2019 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
At room temperature, a dilute solution of urea is prepared by dissolving 0.60 of urea in 360 g of water. If the vapour pressure of pure water at this temperature is 35 mm Hg, lowering of vapour pressure will be. (molar mass of urea = 60 g mol–1)
A
0.031 mmHg
B
0.017 mmHg
C
0.028 mmHg
D
0.027 mmHg
4
JEE Main 2019 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The major product of the following reaction is : JEE Main 2019 (Online) 10th April Morning Slot Chemistry - Alcohols, Phenols and Ethers Question 119 English
A
JEE Main 2019 (Online) 10th April Morning Slot Chemistry - Alcohols, Phenols and Ethers Question 119 English Option 1
B
JEE Main 2019 (Online) 10th April Morning Slot Chemistry - Alcohols, Phenols and Ethers Question 119 English Option 2
C
JEE Main 2019 (Online) 10th April Morning Slot Chemistry - Alcohols, Phenols and Ethers Question 119 English Option 3
D
JEE Main 2019 (Online) 10th April Morning Slot Chemistry - Alcohols, Phenols and Ethers Question 119 English Option 4
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