12th class (Fsc) Chemistry unit 15 MCQs
51. Which one of the following is woody raw material used for making pulp and paper:
a. Bagasse
b. Eucalyptus
c. Cotton linter
d. Wheat straw
52. The % of moisture is paper is:
a. 6-8%
b. 1-3%
c. 5%
d. 4-6%
53. In which paper,some additive is not added:
a. Filter paper
b. Carbon paper
c. Art paper
d. Glazed paper
54. In Pakistan total consumption paper per person per year is:
a. 8 kg
b. 2 kg
c. 10 kg
d. 5 kg
55. Which one of the following is main process in paper industry:
a. Digestion
b. Screening
c. Stock preparation
d. Bleaching
56. Point out the correct sequence of steps for paper manufacture:
a. Flow, spread, drying, pressing, calender stock
b. Calender stock, flow spreader, pressing, drying
c. Calender stock, drying, pressing, fl
d. Flow, spreader, pressing, drying, calender stock
57. During paper making the process of calender stock involves:
a. Spreading of pulp
b. Removal of moisture
c. Winding of paper in the form of reel
d. Reduction oilpaper thickness
58. Which tree elements are needed for the healthy growth of plants:
a. N.P.K
b. N.S.P
c. N.K.C
d. N,Ca.P
59. Which woody raw material is used for the manufacture of paper pulp?
a. Poplar
b. Cotton
c. Rice straw
d. Bagasse
60. The nitrogen present in some fertilizers helps plants:
a. To undergo photosynthesis
b. To fight against diseases
c. To produce protein
d. To rpoduct fat
61. Phosphorus helps the growth of:
a. Stem
b. Root
c. Seed
d. Leave
62. Micro-nutrients are required in quantity from:
a. 6-200kg
b. 4-40g
c. 4-40kg
d. 6-200g
63. During the manufacturing process of cement the temperature of the decomposition zone goes up to:
a. 1000oC
b. 600oC
c. 1200oC
d. 800oC
64. The word paper is derived from the name of which reedy plant?
a. Papyrus
b. Rose
c. Water hyacinth
d. Sun flower
65. Which is not a calarious material?
a. Marble
b. Lime
c. Marine shell
d. Clay
66. How many zones thorugh which the charge passes in a rotary kiln?
a. 2
b. 4
c. 5
d. 3
67. Ammoniun nitrate fertilizer is not used for which group:
a. Sugar cane
b. Cotton
c. Paddy rice
d. Wheat
68. Which one is an organic fertilizer?
a. Manure
b. Ammonium
c. Urea
d. Both a and c
69. Which of the following is not a micronutrient?
a. Mg
b. Cu
c. Mo
d. Fe
70. Macronutrient for soil is:
a. Zn
b. N2
c. Fe
d. Cu
71. Micro-nutrients are required in quantity ranging form:
a. 6-200kg
b. 4-40g
c. 5-200kg
d. 6-200g
72. The natural fertilizer is called:
a. Super phosphate
b. Manure
c. Ammonium sulphate
d. Urea
73. Which of the following elment is not a micro nutrient?
a. Mg
b. Cu
c. Mo
d. Fe
74. Macronutrients are required for acre in quantity ranging form:
a. 4-200Kg
b. 2-200kg
c. 5-200Kg
d. 3-200Kg
75. Ammonium nitrate fetilizer is not used for whihc group:
a. Sugar cane
b. Cotton
c. Paddy rice
d. Wheat