ECAT Chemistry Chapter 26 Common Chemical Industries in Pakistan Online Test With Answers

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ECAT Chemistry Chapter 26 Common Chemical Industries in Pakistan Online Test

Sr. # Questions Answers Choice
1 To meet the due need of food by increasing population we must use in agriculture good seeds pesticides fertilizers all
2 Pakistan at the time of existence in 1947 was a country: agrarian industrial nuclear economically strong
3 After chlorination, the pulp is washed at 20°C 30°C 40°C 60°C
4 At present cement plants in Pakistan are ten twenty two four twenty four
5 The cement plants in west Pakistan at the time of creation were ten twenty two four twenty four
6 Which fills the space between needles in cement setting? Ca(OH)<sub>2</sub> Al(OH)<sub>3</sub> CaCO<sub>3</sub> MgSO<sub>4</sub>
7 Gypsom added in the cement is 5% 10% 15% 20%
8 Urea has concentration when prepared before prilling 46% 82% 99.7% 100%
9 Which is a component of micro nutrient? N Zn P K
10 Which is a component of macronutrient? Zn N Mo Cl
11 Ammonia contains nitrogen in it 46% 50% 80% 82%
12 Ammonia is injected tinder the soil surface 1 feet 6 inches 6 feet inches
13 75% plant nutrients are present in the fertilizer urea NH<sub>4</sub>NO<sub>3</sub> NH<sub>3</sub> (NH<sub>4</sub>)<sub>2</sub>HPO<sub>4</sub>
14 Setting time of cement is controlled by adding Epsom Gypsom CaCO<sub>3</sub> CaCl<sub>2</sub>
15 A colloidal gel is 3cA, Al<sub>2</sub>O<sub>3</sub> CaSO<sub>2</sub>.2H<sub>2</sub>O 3CaAl<sub>2</sub>O<sub>3</sub>.3CaSO<sub>4</sub>.2H<sub>2</sub>O 3Ca.Al<sub>2</sub>O<sub>3</sub>.6H<sub>2</sub>O
16 The strength of economy of a country is measured with respect to production of Medicines Cement Fertilizers Paper
17 Major fertilizers with micro—nutrients are Nitrogeneous Phosphatic Potash a,b,c
18 Which is not nitrogeneous fertilizers? (NH<sub>4</sub>)<sub>2</sub>HPO<sub>4</sub> NH<sub>4</sub>NO<sub>3</sub> urea Calcium phosphate
19 Pakistan in the beginning was a country industrial chemical agrarian technological
20 Composition of clay in cement is 25% 50% 75% 80%
21 Major component in cement is SiO<sub>2</sub> Lime Al<sub>2</sub>O<sub>3</sub> MgO
22 Cement is a combination of mainly calcarious argillaceous calcarious and argillaceous Al<sub>2</sub>O<sub>3</sub>
23 Ammonium nitrate fertilizer is not used for which crop? Cotton Wheat Sugar-cane Paddy rice
24 How many are the zones through which the charge passes in a rotary kiln? 4 3 2 5
25 Which is not a calcarious material lime clay marble marine shell
26 The word paper is derived from the name of which seedy plant? Rose Sun flower Papyrus Water Hyacinth
27 During the manufacturing process of cement the temperature of the decomposition zone goes up to 600<sup>o</sup>C 8000<sup>o</sup>C 1000<sup>o</sup>C 1200<sup>o</sup>C
28 The nitrogen present in some fertilizers helps plant to fight against diseases Produce fat Undergo photosynthesis produce protein
29 Which woody raw material is used for the manufacture of paper pulp? cotton Bagasse Popular Rice straw
30 Which three elements are needed for the healthy growth of plants? N, S, P N, Ca, P N, P, K N, K, C
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