UKSSSC 28 June 2019 exam paper Answer Key – First Shift

41. Ostwald’s dilution law is :

Show AnswerAnswer – A

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

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

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
Show AnswerAnswer – D

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

46. The heart of pila is :
(A) Neurogenic
(B) Myogenic

(C) Both (A) and (B)
(D) None of the above
Show AnswerAnswer – B

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
Show AnswerAnswer – C

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

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

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
Show AnswerAnswer – B

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

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

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

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

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

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

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

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

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
Show AnswerAnswer – D

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

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