उत्तराखंड प्रवक्ता रसायन विज्ञान mcq with solution
Автор: Let's DO Chemistry
Загружено: 2026-03-14
Просмотров: 114
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रसायन प्रवक्ता तैयारी व्हाट्सप्प ग्रुप
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उत्तराखंड प्रवक्ता प्लेलिस्ट
• उत्तराखंड प्रवक्ता भर्ती
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This video (0:00 - 10:36) provides solutions and explanations for chemistry MCQs aimed at the Uttarakhand Lecturer exam. The host covers various topics including metallurgy, inorganic chemistry, organic reaction mechanisms, and physical chemistry.
Here are the key highlights:
Metallurgy (0:26): Sullphide ores are concentrated using the froth flotation process.
Acidic Trend (1:28): The acidity of ions is determined by high charge density and small size.
Table Sugar Structure (3:13): The cyclic structure of sucrose (table sugar) involves a 1,4-glycosidic linkage.
Reaction Mechanisms (4:37): The reaction of 2-bromopropionic acid with OH- ions proceeds via neighboring group participation (NGP), resulting in retention of configuration (R remains R), which is a key concept in SN2 reactions.
Molecular Geometry (7:16): According to VSEPR theory, SbF5 and PCl5 both adopt a trigonal bipyramidal (TBP) geometry.
Physical Chemistry (8:48): For the critical point in a Van der Waals gas, both the first (dp/dv) and second derivatives of pressure with respect to volume are zero.
Catalysts (9:20): Wilkinson's catalyst (RhCl(PPh3)3) is a square planar complex with Rhodium in the +1 oxidation state.
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