1
JEE Main 2020 (Online) 8th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
When gypsum is heated to 393 K, it forms :
A
CaSO4 . 0.5H2O
B
CaSO4 . 5H2O
C
Dead burnt plaster
D
Anhydrous CaSO4
2
JEE Main 2020 (Online) 8th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The major products A and B in the following reactions are :

JEE Main 2020 (Online) 8th January Morning Slot Chemistry - Compounds Containing Nitrogen Question 155 English
A
JEE Main 2020 (Online) 8th January Morning Slot Chemistry - Compounds Containing Nitrogen Question 155 English Option 1
B
JEE Main 2020 (Online) 8th January Morning Slot Chemistry - Compounds Containing Nitrogen Question 155 English Option 2
C
JEE Main 2020 (Online) 8th January Morning Slot Chemistry - Compounds Containing Nitrogen Question 155 English Option 3
D
JEE Main 2020 (Online) 8th January Morning Slot Chemistry - Compounds Containing Nitrogen Question 155 English Option 4
3
JEE Main 2020 (Online) 8th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
As per Hardy-Schulze formulation, the flocculation values of the following for ferric hydroxide sol are in the order :
A
AICl3 > K3[Fe(CN)6] > K2CrO4 > KBr = KNO3
B
K3[Fe(CN)6] < K2CrO4 < KBr = KNO3 = AlCl3
C
K3[Fe(CN)6] < K2CrO4 < AlCl3 < KBr < KNO3
D
K3[Fe(CN)6] > AlCl3 > K2CrO4 > KBr > KNO3
4
JEE Main 2020 (Online) 8th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The most suitable reagent for the given conversion is : JEE Main 2020 (Online) 8th January Morning Slot Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 157 English
A
LiAlH4
B
B2H6
C
NaBH4
D
H2/Pd
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