1
JEE Main 2016 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
Galvanization is applying a coating of :
A
Cr
B
Cu
C
Zn
D
Pb
2
JEE Main 2016 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
Decomposition of H2O2 follows a first order reaction. In fifty minutes the concentration of H2O2 decreases from 0.5 to 0.125 M in one such decomposition. When the concentration of H2O2 reaches 0.05 M, the rate of formation of O2 will be :
A
6.93 $$\times$$ 10-4 mol min-1
B
6.96 $$\times$$ 10-2 mol min-1
C
1.34 $$\times$$ 10-2 mol min-1
D
2.66 L min–1 at STP
3
JEE Main 2016 (Offline)
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Which one of the following ores is best concentrated by froth floatation method?
A
Siderite
B
Galena
C
Malachite
D
Magnetite
4
JEE Main 2016 (Offline)
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The pair in which phosphorous atoms have a formal oxidation state of +3 is :
A
Orthophosphorous and pyrophosphorous acids
B
Pyrophosphorous and hypophosphoric acids
C
Orthophosphorus and hypophosphoric acids
D
Pyrophosphorous and pyrophosphoric acids
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