UKSSSC 28 June 2019 exam paper Answer Key – First Shift

41. Ostwald’s dilution law is :

42. Corpus Luteum secretes hormone is called :
(A) Testosteron
(B) Progesteron
(C) Aldosteron
(D) None of the above

43. On the basis of zoogeographical regions, India belongs to :
(A) Oriental region
(B) Palarctic region
(C) Nearctic region
(D) Ethiopian region

44. The molal depression constant of water is 1.86, if 342 gm. sucrose dissolve in 1000 gm water. Then the freezing point of solution will be :
(A) 1.86°C
(B) 3.92°C
(C) – 3.92°C
(D) – 1.86°C

45. Deficiency of which caused leaf-fall ?
(A) N
(B) Ca
(C) S
(D) P

46. The heart of pila is :
(A) Neurogenic
(B) Myogenic
(C) Both (A) and (B)
(D) None of the above

47. Preparation of Dacron from ethylene glycol and terephthalic acid is an example of:
(A) Addition Polymerisation
(B) Co-polymerisation
(C) Condensation Polymerisation
(D) Free Radical Polymerisation

48. Which of following is broad spectrum Antibiotic ?
(A) Paracetamol
(B) Penicillin
(C) Aspirin
(D) Chloramphenicol

49. Bee-wax is formed by :
(A) Carbon chain
(B) Palmitic acid an hexacosonol alcohol
(C) Lipid
(D) All of the above

50. The main aims of Montreal protocol :
(A) Conservation of biological diversity
(B) To control the emission of ozone depleting substances
(C) To control water pollution
(D) None of the above

51. Which of the following alkali metal is having least melting point ?
(A) Na
(B) K
(C) Rb
(D) Cs

52. Presence of flame cell is special feature of phylum :
(A) Aschelminthes
(B) Playtyhelminthes
(C) Cnidaria
(D) Mollusca

53. In a food chain, the maximum energy is stored in :
(A) Producers
(B) Decomposers
(C) Herbivorous
(D) Carnivorous

54. Scientific name of national bird of India is :
(A) Columba Livia
(B) Psittacula Krameri
(C) Mellisuga Helenae
(D) Pavo Cristatus

55. Pyruvate breaks down and gives CO₂, water and energy. The reaction takes place in :
(A) Cytoplasm
(B) Nucleus
(C) Plastids
(D) Mitochondria

56. Dipole moment is found in :
(A) CO₂
(B) H₂O
(C) CS₂
(D) None of the above

57. Common indicator organism of water pollution is :
(A) Lemna paucicostata
(B) Eichhornia crassipes
(C) Escherichia coli
(D) Entamoeba histolytica

58. The most stable RNA in the cell is :
(A) m – RNA
(B) t – RNA
(C) s – RNA
(D) r – RNA

59. An ester is boiled with KOH and product is cooled and acidified with concentrated HCI, a white precipitate separates out. The ester is:
(A) Methyl acetate
(B) Ethyle formate
(C) Ethyle acetate
(D) Ethyle benzoate

60. The type of inflorescence found in the onion is:
(A) Raceme
(B) Corymb
(C) Umbel
(D) Catkin

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