1
JEE Main 2017 (Online) 9th April Morning Slot
+4
-1
What quantity (in mL) of a 45% acid solution of a mono-protic strong acid must be mixed with a 20% solution of the same acid to produce 800 mL of a 29.875% acid solution ?
A
320
B
325
C
316
D
330
2
JEE Main 2017 (Online) 8th April Morning Slot
+4
-1
Excess of NaOH (aq) was added to 100 mL of FeCl3 (aq) resulting into 2.14 g of Fe(OH)3 . The molarity of FeCl3 (aq) is :

(Given molar mass of Fe = 56 g mol−1 and molar mass of Cl = 35.5 g mol−1)
A
0.2 M
B
03 M
C
0.6 M
D
1.8 M
3
JEE Main 2017 (Offline)
+4
-1
1 gram of a carbonate (M2CO3) on treatment with excess HCl produces 0.01186 mole of CO2. The molar mass of M2CO3 in g mol–1 is:
A
84.3
B
118.6
C
11.86
D
1186
4
JEE Main 2017 (Offline)
+4
-1
The most abundant elements by mass in the body of a healthy human adult are: Oxygen (61.4%); Carbon (22.9%), Hydrogen (10.0%); and Nitrogen (2.6%). The weight which a 75 kg person would gain if all 1H atoms are replaced by 2H atoms is:
A
37.5 kg
B
7.5 kg
C
10 kg
D
15 kg
EXAM MAP
Medical
NEET