RSMSSB LDC Exam Paper 2018 (H to M) in English (Answer Key) – First Shift

41. Which of the following oxides is formed when potassium metal is burnt in excess air ?
(A) K2O2
(B) KO2
(C) KO
(D) K2O|
Show AnswerAnswer – B

42. The structure of XeF4 is –
(A) Trigonal bipyramidal
(B) Pyramidal
(C) Tetrahedral
(D) Square planar
Show AnswerAnswer – D

43. The PSLV rocket uses –
(A) Both solid and biliquid propellants
(B) Oniy biliquid propellants
(C) Oniy monoliquid propellants
(D) Only solid propellants
Show AnswerAnswer – A

44. Which polymers occur naturally ?
(A) Proteins and PVC
(B) Proteins and Nylon
(C) Starch and Cellulose
(D) Starch and Nylon
Show AnswerAnswer – C

45. Which one of the following is an example of Heterogeneous catalysis ?
(A) C12H22O11 (aq) + H2O(1) H2SO4(1) C6H1206(aq) + C6H12O6(aq)
(B) N2(g) + 3H2(g) :
(C) CHCOOCHA
(D) 2SO2(g) +O2
Show AnswerAnswer – B

46. Mark the correct statement for a reversiule reaction –

(A) Catalyst increases the rate of forward reaction and decreases the rate of backward reaction.
(B) Catalyst catalyses only the backwara reaction.
(C) Catalyst affects forward and backward reactions to the same extent.
(D) Catalyst catalyses the forwad reaction.
Show AnswerAnswer – C

47. Deposition of bluish-green coloum substance on copper-utensils occurs due to the formation of the following :
(A) CuO
(B) Cu(OH)2 . CuCO3
(C) Cu(OH)2
(D) CuCO3
Show AnswerAnswer – A

48. Which of the following reactions is not i redox ?
(A) I₂ + 2S₂O₃^-2 → 2I^– + S₄O₆^-2
(B) BaCl₂ + Na₂SO₄ → 2 NaCl + BaSO₄
(C) 2KBr + Cl₂ → 2 KCI + Br₂
(D) 2KCIO₃ → 2 KCI + 3O₂
Show AnswerAnswer – B

49. Brown colour of apple after cutting is due to –
(A) Biological change
(B) No change
(C) Chemical change
(D) Physical change
Show AnswerAnswer – C

50. the reaction 2 Na + Cl₂ → 2NaCl, number of electrons released by 5 g of Na is –
(A) 3.01 × 10²³
(B) 1.204 × 10²⁴
(C) 6.023 × 10²³
(D) 1.024 × 10²⁴
Show AnswerAnswer – D

51. Seetamata Sanctuary in Rajasthan is famous for –
(A) Lion
(B) Crane
(C) Flying Squirrel
(D) Black Deer
Show AnswerAnswer – C

52. According to the forest policy, how much percentage of area should come under forest ?
(A) 15%
(B) 25%
(C) 33%
(D) 20%

Show AnswerAnswer – C

53. The ‘doab plain’ of Ghaggar in Hanumangarh and Sriganganagar districts of Rajasthan is formed by which of the two rivers deposition ?
(A) Ghaggar and Beas rivers
(B) Jawai and Sukri rivers
(C) Ghaggar and Sutlej rivers
(D) Banas and Banganga rivers
Show AnswerAnswer – C

54. Mark the correct match –
(A) Dabala – Singhana – Baryte
(B) Jlhamra – Kotara – Iron ore
(C) Rajpura – Dariba – Gold
(D) Khetri – Singhana – Copper
Show AnswerAnswer – D

55. Which one of the following district in Rajasthan stands first in terms of dairy milk collection ?
(A) Bharatpur
(B) Jaipur
(C) Bikaner
(D) Alwar
Show AnswerAnswer – B

56. Which one of the following grass is best fodder for dairy cattle in Western Rajasthan ?
(A) Doob
(B) Khus-Khus
(C) Dhaman
(D) Seven
Show AnswerAnswer – D

57. Select the incorrect pair –
Present Name – Ancient Name
(A) Bharatpur – Virat
(B) Jalore – Swarangiri
(C) Udaipur – Shivi
(D) Ganganagar – Yoddheye
Show AnswerAnswer – A

58. According to the census 2011 which of the following districts of Rajasthan has high literacy rate. Identify the correct order of districts with literacy rate in descending order.
(A) Jaipur, Kota, Alwar, Sikar, Jhunjhunu
(B) Alwar, Jhunjhunu, Sikar, Jaipur, Kota
(C) Kota, Jaipur, Jhunjhunu, Sikar, Alwar
(D) Sikar, Jaipur, Jhunjhunu, Alwar, Kota
Show AnswerAnswer – C

59. Identify the correct order –
(A) Pong Dam – Chambal river

(B) Sidhmukh Canal – Yamuna river
(C) Meja Dam – Khari river
(D) Bisalpur Dam – Banas river
Show AnswerAnswer – D

60. Maximum areas of soil erosion in Rajasthan is found at –
(A) Sirohi
(B) Dungarpur
(C) Hadoti Plateau
(D) Sriganganagar
Show AnswerAnswer – C

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