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Q.13 Simplify sin A / (1 + cos A) + (1 + cos A) / sin A . (A) 2 sec A (B) 2 cosec A (C) sec A (D) […]

Q.12 In how many ways can one write the elements 1, 2, 3, 4 in a sequence x₁, x₂, x₃, x₄ with x_i ≠ i ∀ i ? (A) 9 […]

Q.11 Let a = √(5+1)/2 and b = √(5-1)/2. Then, limn→∞ (an + bn)/(an – bn) (A) is 1 (B) is ½ (C) is 0 (D) does not exist Limit […]

Q.10 The orbital angular momentum of hydrogen atom in the ground state is ________. (A) 0 (B) h/2π (C) h/2 (D) h The orbital angular momentum hydrogen atom ground state […]

Q.9The technique that involves impacting samples with electrons is _______. (A) NMR spectroscopy (B) ESI mass spectrometry (C) IR spectroscopy (D) UV-vis spectroscopy Electron Impact (EI) ionization in mass spectrometry […]

Q.8Match the entries in Group I with the entries in Group II Group I Group II (P) Nylon (i) Isoprene (Q) Natural rubber (ii) Hexose (R) Starch (iii) Amino acid […]

Q.7The dimensions of coefficient of viscosity are _______. (A) ML-1T-1 (B) ML-1T-2 (C) ML-2T-2 (D) ML-2T-1 The dimensions of the coefficient of viscosity are [M L^{-1} T^{-1}], making option (A) correct.​ […]

Q.6At what pH does poly-Glu in an aqueous solution form α-helical structure? (A) 3 (B) 7 (C) 9 (D) 12 Poly-Glu, or polyglutamic acid, forms an α-helical structure in aqueous […]

Q.5 Which one of the following figures represents the correct sequence of phases in adult eukaryotic cell cycle?   The correct sequence of phases in the adult eukaryotic cell cycle […]

Q.4 Let U = {1, 2, 3, 4, 5}. A subset S is chosen uniformly at random from the non-empty subsets of U. What is the probability that S does […]