1
JEE Advanced 2013 Paper 1 Offline
Numerical
+3
-0

The total number of carboxylic acid groups is the product P is _________.

JEE Advanced 2013 Paper 1 Offline Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 24 English

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2
JEE Advanced 2013 Paper 1 Offline
Numerical
+3
-0

EDTA4$$-$$ is ethylenediaminetetraacetate ion. The total number of N$$-$$Co$$-$$O bond angles in [Co(EDTA)]1$$-$$ complex ion is ________.

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3
JEE Advanced 2013 Paper 1 Offline
Numerical
+3
-0

A tetrapeptide has $$-$$COOH group on alanine. This produces glycine (Gly), valine (Val), phenyl alanine (Phe) and alanine (Ala), on complete hydrolysis. For this tetrapeptide, the number of possible sequences (primary structures) with $$-$$NH2 group attached to a chiral center is _______.

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4
JEE Advanced 2013 Paper 1 Offline
MCQ (Single Correct Answer)
+4
-1
Let complex numbers $$\alpha \,and\,{1 \over {\overline \alpha }}\,$$ lie on circles $${\left( {x - {x_0}} \right)^2} + \,\,{\left( {y - {y_0}} \right)^2} = {r^2}$$ and $$\,{\left( {x - {x_0}} \right)^2} + \,\,{\left( {y - {y_0}} \right)^2} = 4{r^2}$$ respextively. If $${z_0} = {x_0} + i{y_0}$$ satisfies the equation $$2{\left| {{z_0}} \right|^2}\, = {r^2} + 2,\,then\,\left| a \right| = $$
A
$${1 \over {\sqrt 2 }}$$
B
$${1 \over 2}\,$$
C
$${1 \over {\sqrt 7 }}$$
D
$${1 \over 3}$$
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