1
IIT-JEE 2012 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-2
Which of the following molecules, in pure form, is(are) unstable at room temperature?
A
B
C
D
2
IIT-JEE 2012 Paper 1 Offline
Numerical
+3
-0
The substituents R1 and R2 for nine peptides are listed in the table given below. How many of these peptides are positively charged at pH = 7.0 ?
| Peptide | $${R_1}$$ | $${R_2}$$ |
|---|---|---|
| I | H | H |
| II | H | $$C{H_3}$$ |
| III | $$C{H_2}COOH$$ | H |
| IV | $$C{H_2}CON{H_2}$$ | $${(C{H_2})_4}N{H_2}$$ |
| V | $$C{H_2}CON{H_2}$$ | $$C{H_2}CON{H_2}$$ |
| VI | $${(C{H_2})_4}N{H_2}$$ | $${(C{H_2})_4}N{H_2}$$ |
| VII | $$C{H_2}COOH$$ | $$C{H_2}CON{H_2}$$ |
| VIII | $$C{H_2}OH$$ | $${(C{H_2})_4}N{H_2}$$ |
| IX | $${(C{H_2})_4}N{H_2}$$ | $$C{H_3}$$ |
Your input ____
3
IIT-JEE 2012 Paper 1 Offline
Numerical
+3
-0
When the following aldohexose exists in its D-configuration, the total number of stereoisomers in its pyranose form is ____________.
Your input ____
4
IIT-JEE 2012 Paper 1 Offline
MCQ (Single Correct Answer)
+4
-1
Let z be a complex number such that the imaginary part of z is non-zero and $$a\, = \,{z^2} + \,z\, + 1$$ is real. Then a cannot take the value
Paper analysis
Total Questions
Chemistry
20
Mathematics
20
Physics
20
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