Author: admin

Q.8 Three vectors are as follows: \(\vec{a} = 3\hat{i} – 10\hat{j} + 7\hat{k}\) \(\vec{b} = -9\hat{i} + 6\hat{j} – 47\hat{k}\) \(\vec{c} = 11\hat{i} – 17\hat{k}\) The value of \((\vec{a} + […]

Q.7 The value of \(\lim_{n\to\infty} \frac{3n^2 + 5n + 4}{4 + 2n^2}\) is (A) 0 (B) 0.75 (C) 1.5 (D) 3 Introduction Finding the limit of rational functions like (3n2+5n+4)/(4+2n2) […]

Q.6 What is the source of electrons in photosynthesis? (A) Carbohydrates (B) Water (C) CO2 (D) NADH Water serves as the source of electrons in the light-dependent reactions of photosynthesis, […]

Q.5 In the feedback regulation of an enzyme, the end product binds to the (A) active site of the enzyme. (B) allosteric site of the enzyme. (C) enzyme-substrate complex. (D) […]

Q.4 Pyramid of energy in a forest ecosystem is (A) always inverted. (B) dumb-bell shaped. (C) spindle shaped. (D) always upright. Pyramid of energy in a forest ecosystem is always […]

Q.3 Which one of the following organelles is enclosed by a single membrane? (A) Ribosome (B) Mitochondria (C) Endoplasmic reticulum (D) Centrosome Endoplasmic reticulum (C) is the organelle enclosed by […]

Q.2 Which one of the following statements is CORRECT for Mycoplasma? (A) Their cells are of definite shape. (B) They are resistant to lysis by osmotic shock. (C) Their growth […]

Q.1 Which one of the following protozoan parasites belongs to the phylum Apicomplexa? (A) Toxoplasma gondii (B) Leishmania donovani (C) Entamoeba histolytica (D) Trichomonas vaginalis Toxoplasma gondii belongs to the […]

Q.60 An infinitely long solenoid of radius r and number of turns per unit length n carries a steady current I. The ratio of the magnetic fields at a point […]

Q.59 Let ā = 4î – 2ĵ + 6k̂ and b̂ = 7î + ĵ – 12k̂. If ā × b̂ = αî + βĵ + k̂γ, then the value […]