Of the following, which is the product formed when cyclohexanone undergoes aldol condensation followed by heating?
A
B
C
D
2
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Young's double slit experiment is first performed in air and then in a medium other than air. It is found that 8th bright fringe in the medium lies where 5th dark fringe lies in air. The refractive index of the medium is nearly
A
1.59
B
1.69
C
1.78
D
1.25
3
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Suppose the charge of a proton and an electron differ slightly. One of them is $$-$$e, the other is (e + $$\Delta $$e). If the net of electrostatic force and gravitational force between two hydrogen atoms placed at a distance d (musch greater than atomic size) apart is zero, then $$\Delta $$e is of the order of
[Given : mass of hydrogen mh = 1.67 $$ \times $$ 10$$-$$27 kg]
A
10$$-$$23 C
B
10$$-$$37 C
C
10$$-$$47 C
D
10$$-$$20 C
4
NEET 2017
MCQ (Single Correct Answer)
+4
-1
The diagrams below show regions of equipotentials.
A positive charge is moved from A to B in each diagram.
A
In all the four cases the work done is the same.
B
Minimum work is required to move q in figure(I).
C
Maximum work is required to move q in figure (II).
D
Maximum work is required to move q in figure (III)
