Chemistry teacher

 - Dr.Sanjaykumar Pawar   NEET Chemistry Mock Test 2026 – 45 NCERT-based MCQs with Answer Key and Detailed Solutions NEET-UG Chemistry Mock Test 2026 NEET-UG 2026 Chemistry Mock Test Subject: Chemistry Total Questions: 45 MCQs Maximum Marks: 180 Suggested Time: 45 Minutes Difficulty: 30% Easy  |  50% Moderate  |  20% Difficult General Instructions This paper contains 45 multiple-choice questions . Each question has four options: A, B, C and D . Only one option is correct for each question. Each correct answer carries +4 marks . Each incorrect answer carries −1 mark . An unattempted question carries 0 marks . Questions are designed at NEET-UG level and are based primarily on NCERT concepts. Do not refer to the answer key while attempting the question paper. SECTION A — QUESTION PAPER ...

  KÖssel–Lewis Approach to Chemical Bonding — NEET  Notes Class 11 CBSE Chemistry: Chemical Bonding and Molecular Structure – Complete Question Bank 1. Basic idea Kössel and Lewis independently explained chemical bonding in 1916 . They were among the first to give a logical explanation of valency . Their explanation was based on the stability/inertness of noble gases . Main idea: Atoms form chemical bonds to achieve a stable electronic configuration , generally similar to that of a noble gas. ⭐ NEET Key Point Atoms tend to achieve a stable outer shell, usually an octet of 8 electrons. 2. Lewis's picture of an atom Lewis divided an atom conceptually into two parts: (a) Kernel The kernel consists of: nucleus inner-shell electrons These inner electrons generally do not participate in bonding . (b) Outer shell The outermost shell contains the valence electrons . Lewis imagined a maximum of 8 electrons in the outer shell. He represented these 8 pos...