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1
JEE Main 2019 (Online) 9th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
20 mL of 0.1 M H2SO4 solution is added to 30 mL of of 0.2 M NH4OH solution. The pH of the resultant mixture is : [pkb of NH4OH = 4.7].
A
5.2
B
9.0
C
5.0
D
9.4
2
JEE Main 2018 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
An alkali is titrated against an acid with methyl orange as indicator, which of the following is a correct combination?
A
Base Acid End point
Weak Strong Colourless to pink
B
Base Acid End point
Strong Strong Pinkish red to yellow
C
Base Acid End point
Weak Strong Yellow to pinkish red
D
Base Acid End point
Strong Strong Pink to colourless
3
JEE Main 2018 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following salts is the most basic in aqueous solution?
A
Pb(CH3COO)2
B
Al(CN)3
C
CH3COOK
D
FeCl3
4
JEE Main 2018 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following are Lewis acids?
A
BCl3 and AlCl3
B
PH3 and BCl3
C
AlCl3 and SiCl4
D
PH3 and SiCl4
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