Author : jschemistrytelugu@gmail.com

60 JEE preparation strategy for 99+ percentile

Many aspirants aiming for JEE Main 2026 set the target at scoring the 99th percentile or higher to join prestigious National Institutes in India. They have around 60 days left for revision to complete their preparation.     Strategies to follow You must dedicate your time efficiently to revise the overall JEE syllabus. You need […]

How JEE Aspirants Can Stay Motivated Till the Final Exam

Toppers stay ahead The main difference between a JEE topper and an average student is not just talent butthe consistent spirit to push forward. Preparing for JEE 2026 is not about solving problems but a building the right mindset. Set achievable goals  Breakdown the mountained  jee syllabus into smaller milestones. Divide your  subjects into weekly […]

JEE Main 2026 Registration Window Open Till Nov 27

JEE Main 2026 Registration has started. The National Testing Agency (NTA) has officially started the JEE Main 2026 registration process from October 31, 2025.Aspirants aiming for admission in to top engineering institutions across India can  submit their online applications through the official NTA portal. The last date to apply online is November 27, 2025, up […]

Consider the following sequence of reactions CH₃CH₂CHO → (KCN / H₂SO₄) → A → (1. LiAlH₄ 2. H₂O) → B

1.CH₃CH₂CH(OH)COOH 2.CH₃CH₂CH(OH)CN 3.CH₃CH₂CH(OH)CH₂NH₂ 4.CH₃CH₂CH₂CH₂NH₂ Correct answer:(3)  Cyanohydrin becomes amino alcohol  When carbonyl compounds react with HCN to form corresponding cyanohydrins. When these cyanohydrines are reducing with strong reducing agents like Lithium aluminium hydride to form amino alcohols.  ALDEHYDES react with HCN It is a Nucleophilic addition reaction When propionaldehyde react with HCN to form propionaldehyde […]

Question : 0.246 g of an organic compound on complete combustion gave 0.198 g of carbon dioxide and 0.1014 g of water, then the percentage composition of carbon and hydrogen in the compound respectively is

Correct answer : (2) Liebig’s combustion method is used to estimate the percentage composition of carbon and hydrogen present in an organic compound.   In this method, The known mass of an organic compound is burnt in the presence of excess of oxygen to find out the percentage composition of carbon and hydrogen. During this […]

Which of the following orders regarding the electronegativity of hybrid orbital of carbon is correct?

Which of the following orders regarding the electronegativity of hybrid orbital of carbon is correct? sp > sp² > sp³ sp < sp² < sp³ sp > sp³ > sp² sp < sp³ > sp2 The correct answer : option : (1)                            […]

Heat

HEAT Heat is a form of energy that transfers  from a region of higher temperature to a region of lower temperature until thermal equilibrium is established. * Temperature measures the degree of hotness or coldness of a body (average kinetic energy of particles). * Heat represents the total thermal energy transferred due to temperature differences […]

SECOND LAW OF THERMODYNAMICS

SECOND LAW OF THERMODYNAMICS The Second Law can be expressed in several equivalent ways… Direction of Heat Flow (Clausius Statement): Heat flows from hot body to cold body. Heat cannot spontaneously transfer from a colder body to a hotter body without external intervention. This establishes the natural direction of thermal energy transfer. Kelvin-Planck Statement: It […]

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