This chapter is currently out of syllabus
1
JEE Main 2019 (Online) 8th April Evening Slot
+4
-1
Out of Syllabus
The strength of 11.2 volume solution of H2O2 is : [Given that molar mass of H = 1 g mol–1 and O = 16 g mol–1]
A
3.4%
B
34%
C
13.6%
D
1.7%
2
JEE Main 2019 (Online) 8th April Morning Slot
+4
-1
Out of Syllabus
100 mL of a water sample contains 0.81 g of calcium bicrabonate and 0.73 g of magnesium bicarbonate. The hardness of this water sample expressed in terms of equivalents of CaCO3 is : (Molar mass of calcium bicarbonate is 162 g mol–1 and magnesium bicarbonate is 146 g mol–1)
A
1,000 ppm
B
100 ppm
C
10,000 ppm
D
5,000 ppm
3
JEE Main 2019 (Online) 12th January Evening Slot
+4
-1
Out of Syllabus
The volume strength of 1M H2O2 is : (Molar mass of H2O2 = 34 g mol–1)
A
5.6
B
22.4
C
11.35
D
16.8
4
JEE Main 2019 (Online) 11th January Morning Slot
+4
-1
Out of Syllabus
The correct statements among (a) to (d) regarding H2 as a fuel are :

(a)   It produces less pollutants than petrol.

(b)   A cylinder of compressed dihydrogen weighs $$\sim$$ 30 times more than a petrol tank producing the same amount of energy.

(c)   Dihydrogen is stored in tanks of metal alloys like NaNi5.

(d)   On combustion, values of energy released per gram of liquid dihydrogen and LPG are 50 and 142 KJ, respectively.
A
(a) and (c) only
B
(b) and (d) only
C
(a), (b) and (c) only
D
(b), (c) and (d) only
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