Riya Singh12thSample· 15d ago
A small win a day: how I got through the loneliest term of class 12
Nobody tells you that preparing for a big exam can make you feel invisible. Here is what I did on the quiet nights.
Class 12 stories & questions
- Nisha Verma12thSample· 15d ago
Humulin: why were the A and B chains made separately in E. coli and then joined, instead of one gene?
Doing biotech applications for boards + NEET and I'm stuck on the insulin part. NCERT says insulin in the pancreas is made as a prohormone proinsulin that, like a proenzyme, needs processing before it becomes mature. The
- Neel Chatterjee12thSample· 15d ago
Physics problem solving is mostly checking your answer before you know it's wrong
Dimensions, limiting cases and symmetry. Three boring checks that catch more mistakes than rereading ever did.
- Arjun Nair12thSample· 15d ago
Boards vs entrance: same syllabus, two different exams
A dry attempt to explain why the Physics I write for school and the Physics I need for JEE feel like different subjects.
- Pooja Iyer12thSample· 16d ago
Glucose has an aldehyde group but doesn't give Schiff's test or NaHSO3 addition. Plus, what do alpha and beta actually differ in??
Okay drama alert 🎭 glucose is betraying me. NCERT shows glucose reacting with hydroxylamine to give an oxime and with HCN to give a cyanohydrin, and with bromine water to give gluconic acid, so it clearly has an aldehyde
- Zoya Khan12thSample· 17d ago
Electrostatic precipitator vs scrubber vs catalytic converter: what exactly does each remove, and why does a converter need unleaded petrol?
I've been reading the air pollution section slowly because I find the three devices easy to blur. What I have so far: - Electrostatic precipitator thermal power plants : removes particulate matter. NCERT says it can remo
- Nisha Verma12thSample· 18d ago
Fission and fusion both release energy but one splits and one joins. How does the binding energy curve explain it?
This is making me crazy, and I know it's a classic NEET concept so I can't skip it. The binding energy per nucleon curve rises steeply for light nuclei, peaks near iron A around 56 and then falls slowly for heavy nuclei.
- Vivek Mishra12thSample· 18d ago
Why is rms value I0/√2 and what is "average value" if the full cycle average is zero?
I am studying alternating current from NCERT. I understand that household voltage is written as 220 V but the peak is about 311 V. I want to understand why. My teacher said rms value comes from the average of \sin^2 bein
- Riya Singh12thSample· 19d ago
If an individual can survive without reproducing, why is reproduction a "characteristic of life"? And is life span linked to body size?
This is the first chapter of the class 12 bio book and it's making me philosophical, which is not ideal 8 months before NEET. NCERT says reproduction is the process by which organisms produce offspring and ensures contin
- Neel Chatterjee12thSample· 21d ago
What chess, gully football and a cricket scorebook taught me about taking breaks
A very nerdy experiment, a very small football, and a rule about never touching your phone at half time.
- Zoya Khan12thSample· 21d ago
CoCl3·5NH3 with AgNO3, how do I decide how many moles of AgCl form using Werner's primary and secondary valence?
I have been going through Werner's postulates for a few days and I can recite them, but I get stuck the moment a question asks me to apply them. The series I am looking at is the classic one in NCERT: CoCl3·6NH3, CoCl3·5
- Pooja Iyer12thSample· 22d ago
What exactly counts as "reproductive health" and how is the RCH programme different from family planning?
Okay, drama aside, this chapter is one of those "easy" ones where the questions are about definitions and I always lose marks to wording. 😭 NCERT's first lines: reproductive health means a total well-being in all aspects
