1
WB JEE 2021
MCQ (More than One Correct Answer)
+2
-0
Change Language
Reaction of silver nitrate solution with phosphorus acid produces
A
silver phosphite
B
phosphoric acid
C
metallic silver
D
silver phosphate
2
WB JEE 2020
MCQ (More than One Correct Answer)
+2
-0
Change Language
Which of the following statement(s) is/are incorrect?
A
A sink of SO2 pollutant is O3 in the atmosphere
B
FGD is a process of removing NO2 from atmosphere
C
NOx in fuel gases can be removed by alkaline scrubbing
D
The catalyst used to convert CCl4 to CF4 by HF is SbF5
3
WB JEE 2020
MCQ (More than One Correct Answer)
+2
-0
Change Language
SiO2 is attacked by which one/ones of the following?
A
HF
B
Conc.HCl
C
Hot NaOH
D
Fluorine
4
WB JEE 2019
MCQ (More than One Correct Answer)
+2
-0.67
Change Language
Which of the following chemicals may be used to identify three unlabelled beakers containing conc. NaOH, conc. H2SO4 and water?
A
NH4NO3
B
NaCl
C
(NH4)2CO3
D
HCOONa
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