UKSSSC Forest SI Exam Paper 17 July 2021 (2nd Shift) Official Answer Key

41. Which of the following crystal systems has all the axial lengths as equal and all the axial angles as 900?
(A) Cubic
(B) Hexagonal
(C) Orthorhombic
(D) Tetragonal

42. _________ is the Indian state has 17.56% of the state’s geographical area (3474950 Hectares) covered with wetlands.
(A) Jharkhand
(B) Odisha
(C) Gujarat
(D) Mizoram

43. Which of the following is not an example of element?
(A) Copper
(B) Silver
(C) Hydrogen
(D) Carbon dioxide

44. _________ is the Ramsar Wetland of International Importance located in Spiti valley of the Lahul and Spiti district of Himachal Pradesh.
(A) Veeranam tank
(B) Gumti Wildlife Sanctuary
(C) Kaziranga National Park
(D) Chandra Taal

45. Which of the following relations is right when resistors are in Parallel arrangement in a circuit?
(A) R=R1 + R2 + R3
(B) 1/V = 1/V1 + 1/V2 + 1/V3
(C) 1/I = 1/I1 + 1/I2 + 1/I3
(D) 1/R = 1/R1 + 1/R2 + 1/R3

46. Widal test is used to diagnose _________.
(A) Pneumonia
(B) Cholera
(C) Malaria
(D) Typhoid fever

47. How much percentage of lipids is present in the cell membrane of an erythrocyte?
(A) Seventy
(B) Ninety
(C) Twenty
(D) Forty

48. What is the Bonn Convention by United Nations about?
(A) Mercury poisoning
(B) Living modified organisms (LMOs)
(C) Greenhouse Gases (GHG)
(D) Conservation of animals

49. What is the total resistance of the combination if three resistors 1 ohm, 2 ohm and 3 ohm are connected in series?
(A) 18 ohm
(B) 12 ohm
(C) 36 ohm
(D) 6 ohm

50. Who among the following formulated the Zeroth Law of Thermodynamics in 1931?
(A) Karl Bechert
(B) RH Fowler
(C) Tom Banks
(D) Neil Ashby

51. Which of the following taxon must always start with a small letter?
(A) Family
(B) Species
(C) Genus
(D) Order

52. What is the molecular formula of diborane?
(A) H₃BO₃
(B) LiBH₄
(C) B₂H₆
(D) NaBH₄

53. _______ is the National Park located in Andaman and Nicobar Islands.
(A) Velavadar Blackbuck National Park
(B) Mollem National Park
(C) Kanger Ghati National Park
(D) Campbell Bay National Park

54. What is the wave motion in case ultrasonic waves produced by a vibrating quartz crystal in air?
(A) Longitudinal waves only
(B) Transverse waves only
(C) Matter waves
(D) Combination of transverse and longitudinal waves

55. What is the phenomenon of converging and diverging of light rays by a pair of lens known as?
(A) Optical illusion
(B) Reflection
(C) Refraction
(D) Total internal reflection

56. Silicon doped with electron-deficient impurity forms ________.
(A) n-type semiconductor
(B) Insulator
(C) p-type semiconductor
(D) Conductor

57. Which one of the following, is used for soil fumigation and fumigation of some food production facilities?
(A) Carbon Tetrachloride
(B) Chlorofluorocarbons
(C) Halons
(D) Methyl Bromide

58. What is the total linear momentum of the system, if the total external force on the system is zero?
(A) Negative value
(B) Zero
(C) Constant
(D) Keeps changing

59. Which of the following is the best fertilizer for pa

y crop?
(A) Azectus
(B) Nitro
(C) Azolla pinnata
(D) Bactervilla

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Answer – (C)

60. Which quantity will be zero if the velocity remains constant?
(A) Acceleration
(B) Displacement
(C) Average Velocity
(D) Speed