1
JEE Advanced 2024 Paper 2 Online
Numerical
+4
-0
For a double strand DNA, one strand is given below:
![JEE Advanced 2024 Paper 2 Online Chemistry - Biomolecules Question 1 English](https://app-content.cdn.examgoal.net/fly/@width/image/6y3zli1lwpydf2w/e2b61bf4-e5fa-41d3-b918-c961c3d150cf/8de0a180-1cb2-11ef-853e-dba8720394f1/file-6y3zli1lwpydf2x.png?format=png)
The amount of energy required to split the double strand DNA into two single strands is _______ kcal $\operatorname{mol}^{-1}$.
[Given: Average energy per H-bond for A-T base pair $=1.0 ~\mathrm{kcal}~ \mathrm{mol}^{-1}$, G-C base pair $=1.5 ~\mathrm{kcal}$ $\mathrm{mol}^{-1}$, and A-U base pair $=1.25 ~\mathrm{kcal} ~\mathrm{mol}^{-1}$. Ignore electrostatic repulsion between the phosphate groups.]
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2
JEE Advanced 2020 Paper 2 Offline
Numerical
+3
-1
The structure of a peptide is given below.
![JEE Advanced 2020 Paper 2 Offline Chemistry - Biomolecules Question 15 English](https://app-content.cdn.examgoal.net/fly/@width/image/1letdf3m7/b0b991f3-68c1-462a-af5e-24c78091a5ff/dab499f0-ba37-11ed-88a1-f386cf70a840/file-1letdf3m8.png?format=png)
If the absolute values of the net charge of the peptide at $\mathrm{pH}$ $=2$, $\mathrm{pH}=6$, and $\mathrm{pH}=11$ are $\left|Z_1\right|,\left|Z_2\right|$, and $\left|Z_3\right|$, respectively, then what is $\left|Z_1\right|+\left|Z_2\right|+\left|Z_3\right|$?
![JEE Advanced 2020 Paper 2 Offline Chemistry - Biomolecules Question 15 English](https://app-content.cdn.examgoal.net/fly/@width/image/1letdf3m7/b0b991f3-68c1-462a-af5e-24c78091a5ff/dab499f0-ba37-11ed-88a1-f386cf70a840/file-1letdf3m8.png?format=png)
If the absolute values of the net charge of the peptide at $\mathrm{pH}$ $=2$, $\mathrm{pH}=6$, and $\mathrm{pH}=11$ are $\left|Z_1\right|,\left|Z_2\right|$, and $\left|Z_3\right|$, respectively, then what is $\left|Z_1\right|+\left|Z_2\right|+\left|Z_3\right|$?
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3
JEE Advanced 2014 Paper 1 Offline
Numerical
+3
-0
The total number of distinct naturally occurring amino acids obtained by complete acidic hydrolysis of the peptide shown below is
![JEE Advanced 2014 Paper 1 Offline Chemistry - Biomolecules Question 13 English](https://app-content.cdn.examgoal.net/fly/@width/image/1l1ax4soe/d5d96142-fa8d-4a51-b4a2-3ea6134a0e91/3e7b74e0-aeb3-11ec-a750-090dba8947a4/file-1l1ax4sof.png?format=png)
![JEE Advanced 2014 Paper 1 Offline Chemistry - Biomolecules Question 13 English](https://app-content.cdn.examgoal.net/fly/@width/image/1l1ax4soe/d5d96142-fa8d-4a51-b4a2-3ea6134a0e91/3e7b74e0-aeb3-11ec-a750-090dba8947a4/file-1l1ax4sof.png?format=png)
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4
JEE Advanced 2013 Paper 1 Offline
Numerical
+4
-0
The total number of lone-pairs of electrons in melamine is
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