1
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
Reaction by which benzaldehyde cannot be prepared
A
NEET 2013 Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 63 English Option 1
B
NEET 2013 Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 63 English Option 2
C
NEET 2013 Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 63 English Option 3
D
NEET 2013 Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 63 English Option 4
2
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
Nitrobenzene on reaction with conc. HNO3/H2SO4 at 80$$-$$100oC forms which one of the following products?
A
1, 4-Dinitrobenzene
B
1, 2, 4 - Trinitrobenzene
C
1, 2-Dinitrobenzene
D
1, 3-Dinitrobenzene
3
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
For a normal eye, the cornea of eye provides a converging power of 40 D and the least converging power of the eye lens behinf the cornea is 20 D. Using this information, the distance between the retina and the cornea-eye lens can be estimated to be
A
1.67 cm
B
1.5 cm
C
5 cm
D
2.5 cm
4
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
Two pith balls carrying equal charges are suspended from a common point by strings of equal length, the equilibrium separation between them is r. Now the strings are rigidly clamped at half the height. The equilibrium separation between the balls now become

NEET 2013 Physics - Electrostatics Question 60 English
A
$$\left( {{{2r} \over {\sqrt 3 }}} \right)$$
B
$$\left( {{{2r} \over 3}} \right)$$
C
$${\left( {{1 \over {\sqrt 2 }}} \right)^2}$$
D
$$\left( {{r \over {\root 3 \of 2 }}} \right)$$
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