1
JEE Main 2018 (Online) 15th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Biochemical Oxygen Demand (BOD) value can be a measure of water pollution caused by the organic matter. Which of the following statements is correct ?
A
Aerobic bacteria decrease the BOD value.
B
Anaerobic bacteria increase the BOD value.
C
Clean water has BOD value higher than 10 ppm.
D
Polluted water has BOD value higher than 10 ppm.
2
JEE Main 2018 (Online) 15th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
When 2-butyne is treate with H2/Lindlar's catalyst, compound X is produced as the major product and when treated with Na/liq. NH3 it produces Y as the major product Which of the following statements is correct ?
A
X will have higher dipole moment and higher boiling point than Y.
B
Y will have higher dipole moment and higher boiling point than X.
C
X will have lower dipole moment and lower boiling point than Y.
D
Y will have higher dipole momet and lower boiling point than X.
3
JEE Main 2017 (Online) 9th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
The major product of the following reaction is :

JEE Main 2017 (Online) 9th April Morning Slot Chemistry - Hydrocarbons Question 110 English
A
JEE Main 2017 (Online) 9th April Morning Slot Chemistry - Hydrocarbons Question 110 English Option 1
B
JEE Main 2017 (Online) 9th April Morning Slot Chemistry - Hydrocarbons Question 110 English Option 2
C
JEE Main 2017 (Online) 9th April Morning Slot Chemistry - Hydrocarbons Question 110 English Option 3
D
JEE Main 2017 (Online) 9th April Morning Slot Chemistry - Hydrocarbons Question 110 English Option 4
4
JEE Main 2016 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
At 300 K and 1 atm, 15 mL of a gaseous hydrocarbon requires 375 mL air containing 20% O2 by volume for complete combustion. After combustion the gases occupy 345 mL. Assuming that the water formed is in liquid form and the volumes were measured at the same temperature and pressure, the formula of the hydrocarbon is:
A
C3H8
B
C4H8
C
C4H10
D
C3H6
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