Which is the best PDF reader app for a Windows PC?

SUMATRA PDF.

I have long searched for a PDF reader app which is fast and lightweight and use the least amount of resources.

This takes less than 20 MB of space and opens PDF in less than a second.

I can keep 100’s of PDF open and I may close the app while reading the 3rd page of 97th PDF and when I open the app the next day it will exactly open to that page of that particular PDF only and also will sideby open other 96 PDFs.

It can also open eBook (epub, mobi), comic book (cbz/cbr), DjVu, XPS, CHM, images too.

It is fully customisable too using settings and one coded document.

I personally use the pre-release version and this also gets regular weekly interesting updates.

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Chemistry Lab Experiment: Determination of distribution coefficient of iodine between organic and inorganic layer

Determination of the Distribution Coefficient of Iodine Between Organic and Aqueous Phases Introduction The distribution (or partition) coefficient is the ratio in which a solute like iodine divides itself between two immiscible solvents—here, an organic solvent (CCl₄ or CHCl₃) and water. This experiment determines the distribution coefficient K = [ I 2 ] organic / [ I 2 ] aqueous K = [I_2]_{\text{organic}} / [I_2]_{\text{aqueous}} at room temperature. Objective To determine the distribution coefficient of iodine between distilled water and carbon tetrachloride or chloroform. Principle When shaken with two immiscible solvents, iodine distributes between them based on its solubility. At equilibrium, the ratio of concentrations remains constant at a given temperature: K = [ I 2 ] organic [ I 2 ] aqueous K = \frac{[I_2]_{\text{organic}}}{[I_2]_{\text{aqueous}}} Titration using sodium thiosulfate and starch as an indicator allows us to determine the iodine concentrations in both ...

B.Tech./MSc/BSc Chemistry Lab Experiment: Decomposition of Diacetone alcohol – Dilatometry method

Decomposition of Diacetone Alcohol – Dilatometry Method Aim To study the kinetics of the decomposition of diacetone alcohol at 25 °C in the presence of alkali using the dilatometric method. Principle The decomposition of diacetone alcohol in an alkaline medium follows the reaction: (CH₃)₂C(OH)CH₂COCH₃ ⟶ 2 CH₃COCH₃ In the presence of excess alkali, the reaction rate is independent of the alkali concentration and depends only on the concentration of diacetone alcohol. This behavior makes it a pseudo-first order reaction . Since the products occupy a larger volume than the reactants, the change in volume during the reaction can be used to monitor the reaction progress. Thus, the dilatometric method is especially suitable for studying this reaction. The rate constant k for a first-order reaction is given by: k = (2.303 / t) × log(V∞- V₀) / (V∞ - Vt)) Where: V₀ = initial volume Vt = volume at time t V∞ = final volume Apparatus and Chemicals Required Sl. No. Apparatus Chem...

Is it possible to install Windows 10 or 11 on an Android device?

Installing Windows 10 or 11 directly on an Android device (especially phones or tablets) is not officially supported and is generally not practical for most users. However, there are limited workarounds depending on your device, but they come with major limitations and risks. ⚠️ TL;DR: Is it possible? ✅ Yes, but only on a few Android devices with specific chipsets (like x86 tablets or rooted phones). ❌ Not feasible or stable on most regular Android phones (ARM-based) . ⚠️ Not for daily use , mostly experimental or for advanced users. 🔧 Possible Methods (Advanced Users Only) 1. Using Virtualization: Limbo or QEMU What it is : Emulates a PC environment within Android. Tools : Limbo PC Emulator or QEMU for Android. How it works : You run a Windows ISO in a virtual machine. Limitations : Extremely slow (not usable for real work or gaming). Limited RAM/CPU. No GPU acceleration. 2. Windows on ARM on Devices Like Lumia (e.g., Lumia 950 XL)...

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