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Content text Institute of Forestry, IOF, TU BSc Forestry Question Paper 2074.pdf

Kunwar Sushil and Ghimire Pravesh Chandra Tribhuvan University Institute of Forestry B.Sc. Forestry Entrance Examination 2074 Time: 2 hours Full Marks: 100 Cross the box of the correct answer of the multiple choice questions on the answer sheet attached at the last. Candidates are required to attempt all the questions. 1. In any triangle ABC, tan is equal to a. tan b. cot c. cot d. cot 2. The function y = f(x) will have a point of inflection at that point where a. = 0 b. = 0 c. > 0 d. < 0 3. The equation x+2y = 1 and 3x+by = 9 have a. Only one solution set c. infinite number of solution sets b. Only two solution sets d. no solution set 4. In the Sine law = = = 2R , for any ABC, R stands for a. The altitude c. the circum radius b. The inradius d. the median 5. The derivative of sinx with respect to cosx is a. cotx b. –cotx c. tanx d. –tanx 6. If b2 - 4ac > 0, then the roots are a. Real and equal c. real and unequal b. Real and imaginary d. None of the above 7. The product of the roots of the quadratic equation 2x2 -3x-2 = 0 is a. 1 b. -1 c. 3 d. -3 8. The sum of two complex numbers z=(a,b) and w = (c,d) is equal to a. (a+b,c+d) b. (a+d,b+c) c. (a-c,b-d) d. (a+c,b+d) 9. The absolute value of a complex number z =(a,b) = a+ib in the non negative real number |z| is defined by a. a 2 +b2 b. √ c. a 2 b 2 d. √ 10. limx→a is equal to a. nx n-1 b. nxn c. na n-1 d. nan 11. is equal to a. b. - c. - d. 12. ʃ ( ax + b )n dx is equal to a. ax(ax+b)n-1 b. an (ax+b)n+1 c. d. 13. The perpendicular drawn from the vertices on their opposite sides meet at a point, this point is known as ............................. a. orthocenter b. circumcentre c. incentre d. centroid 14. If ‘n’ is any positive integer, then *r(cosθ + i sinθ)+n is equal to a. r n [cosθ + i sinθ] c. rn [cosnθ + sinnθ] b. r n [cosnθ + sinnθ] d. rn [cos n θ + i sinn θ] 15. If a=bx , b= cy and c = az , then a. xyz = 1 b. xyz=0 c. x+y+z = 1 d. xyz = abc 16. In any triangle ABC, cos A is equal to a. b. c. d. 17. ʃ cosec 2 ax dx is equal to a. + c b. - + c c.cotax + c d.-cotax + c 18. If a,b,c form an Arithmetic sequence, then a. b 2 = ac b. b2 < ac c. b 2 > ac d. none of the above 19. logam is equal to a. logam b. mloga c. logab.logbm d. logba.logmb 20. is equal to a. 0 b. 1 c. a d. all of the above 21. “He looked very scruffy, but he still got the job” means the same as a. Despite he looked very scruffy but he still got the job. b. Despite of his scruffy appearance, he got the job. c. Despite of his scruffy appearance, he got the job. d. Despite of the fact that he looked scruffy, he got the job. 22. In which quarter of the dictionary will you find the following words: picture, journey, kitchen, include a. First and Fourth c. Second and Third b. Third and Second d. Second and Fourth

Kunwar Sushil and Ghimire Pravesh Chandra 49. Which mirror is used for shaving? a. Concave mirror c. Concave cylindrical mirror b. Convex mirror d. None of the above 50. A highly capacitive circuit has a power factor which is a. low b. high c. zero d. fluctuating 51. Tear gas is a. Nitrous oxide b. Chloretone c. Chloropicrin d. Chlorine 52. Among below which is reducing agent? a. KMnO4 b. K2Cr2O7 c. O3 d. H2S 53. The product obtained by Formaldehyde and Phenol is a. Trioxane b. Urotropin c. Bakellite d. None of the above 54. Which is weak acid? a. H2CO3 b. HCCOH c. H2C2O4 d. All of the above 55. 4.4 gm of gas occupies 2240 ml volume at NTP, What will be the molecular weight of that gas? a. 22.4 b. 44 c. 32 d. 64 56. Which of the molecule is sp3 hybridised? a. NH3 b. CO2 c. CO d. N2 57. An acid found in soft drink is ..... a. HCl b. HCOOH c. H2CO3 d. H3PO4 58. Which is synthetic polymer? a. Polyster b. Rubber c. Cellulose d. Starch 59. Bauxite is an ore of a. Al b. Na c. Fe d. Ag 60. Na2CO3 is a. basic b. acidic c. neutral d. None of the above 61. The main basis of classification of protozoa is a. Number of nuclei b. Size c. Locomotory organ d. Shape 62. Response of organism to stimulus of touch is called... a. Phototaxis b. Thermotaxis c. Hydrotaxis d. Thigmotaxis 63. Brown colour of skin of earthworm is due to a. Chromophils b. Haemoerythri c. Maemoglobin d.Porphyrin 64. Body covering of paramecia is a. Pellicle b. Cuticle c. Plasmalemma d. Cell wall 65. Which of the following is chief source of water and soil pollution? a. Agro-industry b. Mining c. Thermal power station d. All of the above 66. The largest national park is a. Chitwan national park b. Sagarmatha national park c. Makalu-Barun national park d. Shey-Phoksundo national park 67. Study of shells, especially those of molluscs is known as a. Biology b. Entomology c. Conchoogy d. Zoology 68. Which one is the nearest ancestors of modern human ? a. Pithecanthropus b. Sinanthropus c. Homo neanderthalensis d. Homo sapiens 69. The sexual phase of life cycle of Plasmodium is completed in a. Blood of man b. Btomach of female Anopheles c. Salivary glands of female anopheles d. Body cavity of mosquito 70. Radula is present in a. Coelenterata b. Protozoa c. Mollusca d. Arthropoda 71. Replication of DNA occurs during a. G1 phase b. G2 phase c. M phase d. S phase 72. The gametophyte of fern is a. Protonema b. Prothallus c. Tropophylls d. Sporophylls 73. Which of the following plant belongs to monocot class of angiosperms? a. Oryza sativa b. Brassica campestrisc. Pisum sativum d. Solanum nigrum 74. The main atmospheric layer near the surface of earth is a. Stratosphere b. Mesosphere c. Troposphere d. Ionosphere 75. Adenine is a kind of a. Purine b. Pyrimidine c. Nucleotide d. Nucleoside 76. Potato plant belongs to the family a. Brassicaceae b. Solanaceae c. Compositeae d. Graminae 77. Lichen indicate a. Air pollution b. Water pollution c. Soil pollution d. Noise pollution 78. Indirect cell division is called a. Meiosis b. Mitosis c. Amitosis d. Cleavage 79. Pyramid of energy a. is always erect b. is always inverted

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