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Mentor247 JEE
26 de mai. de 2026, 12:06
𝐏𝐇𝐘𝐒𝐈𝐂𝐀𝐋 𝐏𝐑𝐎𝐏𝐄𝐑𝐓𝐈𝐄𝐒 𝐎𝐅 𝐏𝐇𝐄𝐍𝐎𝐋𝐒 ✅
▸ Phenols are colorless crystalline solid or liquid having characteristic odour.
▸ Due to hydrogen bonding phenols has higher boiling point.
▸ The solubility of phenols in water is decreases with increase in size of aryl groups. Hydrophobic character increases as number of aryl groups increases
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Mentor247 JEE
26 de mai. de 2026, 12:06
JEE Mains 2025 Results out 🔥🔥 - https://c360.me/PTHFDR/941ece
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Mentor247 JEE
26 de mai. de 2026, 12:06
[poll]
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Mentor247 JEE
26 de mai. de 2026, 12:06
Ligand strength ka direct question aata hai usually Exam me......
I⁻ < Br⁻ < SCN⁻ < Cl⁻ < S²⁻ < F⁻ < OH⁻ < C₂O₄²⁻ < H₂O < NCS⁻ < edta⁴⁻ < NH₃ < en < CN⁻ < CO
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Mentor247 JEE
26 de mai. de 2026, 12:06
📷 Photo
Fig.: Relation between Mass, No. of moles and No. of molecules
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Interpretation of balanced chemical equations:
Once we get a balanced chemical equation then we can interpret a chemical equation by following ways: ✅
✿ Mass - mass analysis
✿ Mass - volume analysis
✿ Mole - mole analysis
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Mentor247 JEE
26 de mai. de 2026, 12:06
Electric Charges and Fields
1. Electric Charge Charge is the property associated with matter due to which it produces and experiences electric and magnetic effect.
2. Conductors and Insulators Those substances which readily allow the passage of electricity through them are called conductors, e.g. metals, the earth and those substances which offer high resistance to the passage of electricity are called insulators, e.g. plastic rod and nylon.
3. Transference of electrons is the cause of frictional electricity.
4. Additivity of Charges- Charge are scalars and they add up like real numbers. It means if a system consists of n charges q1, q2, q3 , … ,qn, then total charge of the system will be q1 +q2 + … +qn.
5. Conservation of Charge The total charge of an isolated system is always conserved, i.e. initial and final charge of the system will be same.
6. Quantisation of Charge -Charge exists in discrete amount rather than continuous value and hence, quantised.
Mathematically, charge on an object, q=±ne
where, n is an integer and e is electronic charge. When any physical quantity exists in discrete packets rather than in continuous amount, the quantity is said to be quantised. Hence, charge is quantised.
7. Units of Charge
(i) SI unit coulomb (C)
(ii) CGS system
(a) electrostatic unit, esu of charge or stat-coulomb (stat-C)
(b) electromagnetic unit, emu of charge or ab-C (ab-coulomb)
1 ab-C = 10 C, 1 C = 3 x 109 stat-C
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Mentor247 JEE
26 de mai. de 2026, 12:06
[poll]
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Mentor247 JEE
26 de mai. de 2026, 12:06
Channel name was changed to «Surprise»
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Mentor247 JEE
26 de mai. de 2026, 12:06
I knew if i will say something to you all, there will be some section of my students who will feel that i am biased. Let me tell you few things beta:
1. we as humans must understand the pain others are in, if we cant atleast we can try.
2. For me men and women both are equally capable enough. If something is being done to one gender doesnt mean it unfair to another.
3. I live a life where i keep others struggle above mine, that never goes in vain. bhagwaan sab dhkta hai. unhone hame insaan banaya, but insaaniyat hame apne actions se hi karni hoti hai.
4. Support to anyone maybe injustice to someone, but that doesnot mean we should not address the problem. i know men face other problems but believe me kabhi apni mummy, behen se puchna unhone toh apne liye sochna bhi chd diya hai.
5. To all the men, we are men when we create an environment to make other feel safe, respected. if we can't , we are just animals like others.
i know apko ye lecture nahi sun na tha but, ham apko sirf engineer hi nhi ek acha insaan pahle banana chahta he. padhai tab tak kisi kaam ki nahi jab tak wo achran mein na aaye. Love you all.
