Last seen: Mar 10, 2022
Nickel is refined by Mond's process. In this process, nickel is heated in the presence of carbon monoxide to form nickel tetracarbonyl, which is a vol...
Above 1350°C, the standard Gibbs free energy of formation of Al2O3 from Al is less than that of MgO from Mg. Therefore, above 1350°C, Al can reduce Mg...
(i) Zone refining: This method is based on the principle that impurities are more soluble in the molten state of metal (the melt) than in the solid st...
Correct answer: (c) CH2BrCH2(CH2)8COOH Explanation: Anti Markovnikov's addition
Correct answer: (a) a more stable carbonium ion Explanation: All are examples of electrophilic addition reactions and involve the formation of sta...
Correct answer: (c) Li/NH3 Explanation: With Lithium in liquid ammonia, trans-alkene is almost an exclusive product. Ph - C ≡ C - Ph
Correct answer: (b, c) Explanation: figure.png Formation of above species is more favourable. The stability order of carbocations is figure....
Correct answer: (c) CH2(Cl)CH2OH and aqueous NaHCO3 Explanation: CH2 = CH2 + HOCl →
Correct answer: (3) Explanation: figure.png 3MV0 = 2MV2 + MV1 3V0 = 2V2 + V1 120 = 2V2 + 60 ⇒ V2 = 30 m/s = = = =
Answer: (3) 16 : 3 Explanation: PV = nRT 400 x 103 x 500 x 10-6 = n(300)n = n = n1 + n2 = + Also M1 + M2 = 0.76 gm =
Correct answer: (3) (d) only Explanation: Since φ = = EA cosθ figure.png θ = 90° ∴ φ = 0
Correct answer: (4) 1Ω Explanation: figure.png Req = = = 1 Ω
Correct answer: (3) 2 : 1 Explanation: = 4π = 2π cosπ = -1, cos3π = -1 ∴ = 2
Correct answer: (c) pair of glumes
Correct answer: (b) Hans Kreb Explanation: TCA cycle or tricarboxylic acid cycle was given by Hans Kreb. So it is also called as Kreb cycle.
Correct answer: (d) Both of these Explanation: In fermentation, the incomplete oxidation of glucose is achieved under anaerobic conditions by sets...
Correct answer: (c) mitochondrial matrix Explanation: Pyruvate is transported from cytoplasm into the mitochondria. The complete oxidation of pyru...
Correct answer: (b) 2 - celled stage
Correct answer: (b) CO2 produced to O2 consumed
Correct answer: (c) wilting of leaves Explanation: Water stress causes closure of stomata. Since stomata is closed carbon dioxide available to pla...