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CHAPTER NO 16

CHEMICAL INDUSTRY

Encircle the most appropriate answer among the following options


1          Science of extracting metals from ores is called:

(a) Gangue

(b) Metallurgy

(c) Bessemerization

(d) Calcinations


2          Fertilizers urea is used to enhance the:

(a) enhance the variety of items

(b) a & c

(c) productivity of crops

(d) None of these


3          These are used as fuel, solvent and lubricants:

(a) petrochemicals ·

(b) Fertilizers

(c) petroleum products

(d) Ores


4          Big industries in India at the time of patrician:

(a) 989

(b) 924

(c) 926

(d) 921


5          Sodium carbonate is _ producing in Jhelum:

(a) more

(b) Less

(c) enough

(d) None of these


6          ICI unit was established in:

(a) 1946

(b) 1944

(c) 1942

(d) 1947


7          Sindh alkalies limited were established in:

(a) 1966

(b) 1956

(c) 1969

(d) 1968


8          Pakistan is self-sufficient for the demand of:

(a) Sodium carbonate

(b) Sodium bicarbonate

(c) Sodium chloride

(d) Sodium hydroxide


9          In Solvay’s process, CaCl2 solution is a material:

(a) Need

(b) Waste

(c) products

(d) Reactant


10        CO2 and_ _ are recovered & reused in Solvay’s process:

(a) ammonia .

(b) Aluminum

(c) sodium

(d) NACL


11        Urea is a fertilizer:

(a) Carbonic :

(b) Nitrogenous

(c) Both a & c

(d) None of these


12        Percentage of nitrogen in urea:

(a) 46.2%

(b) 48%

(c) 41%

(d) 46.6%


13        Urea is a compound:

(a) White-crystalline

(b) Transparent

(c) blue crystalline ·

(d) none crystalline


14        Urea is a highly soluble in:

(a) Carbon dioxide

(b) Water

(c) crude oil

(d) petroleum


15        Urea is used for manufacturing of:

(a) crude oil

(b) slaked lime

(c) important chemicals

(d) None of these


16        Urea is about used as a fertilizer:

(a) 90%

(b) 93%

(c) 90.4% .

(d) 94%


17        NH3 and CO2 are the raw materials of:

(a) sodium chloride

(b) Crude oil

(c) fuel

(d) Urea


18        Ammonia is prepared by:

(a) Solvay’s process

(b) Electromagnetic separation

(c) Haber’s process

(d) Electrolysis.


19        Volume of nitrogen in Haber’s process obtain from:

(a) Water

(b) air

(c) Carbon dioxide

(d) None of these


20        Nitrogen react with hydrogen to form ammonia at:

(a) 250 atm

(b) 235 atm

(c) 300 atm

(d) 200 atm


21        Temperature required for the production of ammonia is:

(a) 400°C :

(b) 450 °C.

(c) 425 °C

(d) 500°C


22        For the formation of ammonia carbonate CO2 is passed through:

(a) Brine solution

(b) Liquid carbon

(c) liquid ammonia

(d) both a & b


23        Urea is used to make:

(a) Fire extinguisher

(b) Explosives

(c) Automobiles

(d) None of these


24        percentage of Nitrogen in air:

(a) 72%

(b) 75%

(c) 78%

(d) 81%


25        There are manufacturing units in Pakistan:

(a) Six

(b) Nine

(c) Twelve

(d) Seven


26        The biggest Fertilizer manufacturer in Pakistan is:

(a) Engro chemicals

(b) David Hercules chemicals

(c) Bin Qasim

(d) Fauji fertilizers


27        Fauji fertilizers contains : % of market shares:

(a) 55

(b) 61

(c) 56

(d) 59 


28        Natural fertilizers contains natural Bio-degradable from:

(a) Nitrogen

(b) Phosphorous

(c) Live stock

(d) Potassium


29        Chemical fertilizers release very fastly:

(a) Minerals

(b) gasses

(c) Nutrients

(d) Both a&b


30        Natural fertilizers improve the structure of:

(a) Soil

(b) Ores

(c) Minerals

(d) Metals


31        Natural fertilizers are decomposed by:

(a) Fungi

(b) Algae

(c) Bacteria

(d) Ferns


32        Natural fertilizers practically do not contain:

(a) Nitrogenic Chemical

(b) Ionic Chemical in

(c) Non-ionic Chemical

(d) Toxic chemical


33        In fractional distillation crude oil is heated up to:

(a) 400°C

(b) 500°C

(c) 450 °C

(d) 425°C


34        Crude oil is separated into _ hydrocarbons:

(a) 7

(b) 6

(c) 8

(d) 9


35        Boiling point of gasoline or petrol is:

(a) 50 to 100 °C

(b) 60 to 140°C

(c) 40 to 90 °C 

(d) 80 to 170 °C


36        Fuel oil boils at:

(a) 350 to 400 °C

(b) 60 to 140 °C

(c) 40 to 90 °C

(d) 80 to 170 °C


37        Ammoniacal tower contains:

(a) steam .

(b) Quick lime

(c) Slaked lime

(d) Brine


38        Sodium hydrogen carbonate decomposes to liberate gas:

(a) H2

(b) SO2

(c) CO2

(d) N2


39        Solvay’s process is

(a) Expensive process

(b) Hydrogen free

(c) Pollution free

(d) None of these


40        Solvay’s process is a

(a) Carbonating

(b) Expensive process

(c) Cheap process

(d) None of these


41        “ICI” stands for

(a) International chemical industries .

(b) Imperial chemical industry

(c) International Compound Industry

(d) None of these


42        For Electrolytic refining of copper solution is used

(a) copper oxide

(b) Copper sulphate

(c) copper dilute

(d) Copper sulphide


43        Cheap raw material for manufacturing of sodium carbonate is

(a) sulphur :

(b) Carbon

(C) aluminum

(d) limestone


44        Sodium bi carbonate heated to get

(a) lime kiln

(b) Calcium hydroxide

(c) sodium carbonate

(d) Ammonia


45        Quick lime reacts with water to form

(a) lime water .

(b) Limestone

(c) salt water.

(d) Slaked lime


46        Ferrous sulphide is oxidized to form

(a) ferric oxide

(b) ferric hydroxide

(c) ferrous oxide

(d) Ferric sulphate


47        It is used for bessemerisation of copper

(a) magnetic separation

(b) gravity separation t fumuse

(d) bersemmer convertor


48        Blister copper contains

(a) 95% pure copper

(b) 99% pure copper

(c) 98% pure copper

(d) 92% půre copper


49        Cuprous sulphate oxidizes to form

(a) cuprous sulphate

(b) Cupric oxide

(c) Cuprous oxides

(d) Cupric sulphate


50        Cuprous sulphide and ferrous sulphide form

(a) CuO.FeS

(b) CuSO4.Fes

(c) CuFeS2

(d) CuFeS


51        Molten mixture of Cu2S.Fes is called

(a) ore

(b) matte

(c) soil

(d) petroleum


52        First process involved in metallurgy is

(a) extraction of metals

(b) smelling

(c) froth forestation


(d) concentration of ore


53        Process based on wetting characteristic of ore is called

(a) Electrolytic separation

(b) smelling

(c) froth flotation

(d) Gravity separation


54        Separation of magnetic ore from non magnetic is called

(a) gravity separation

(b) electromagnetic

(c) concentrate

(d) matte


55        Brown hair contains:

(a) titanium

(b) molybdenum

(c) iron or copper compound

(d) alkali metal


 56       Blonde hair contains:

(a) Titanium

(b) Molybdenum

(c) iron or copper compound

(d) Alkali metal


 57       Red hair contains:

(a) Titanium

(b) Molybdenum

(c) iron or copper compound

id) Alkali metal


 58       Process of extraction of metal in pure state is:

(a) Gangue

(b) Gravity separation

(c) Metallurgy

(d) Electromagnetic Separation


59        Process of removal of Gangue from ore is called:

(a) Concentrate

(b) Metallurgy

(c) Concentration

(d) ores


60        How many industries came in share of Pakistan:

(a) 36

(b) 33

(c) 34

(d) 30


61        Minerals are those solid natural metal which contains:

(a) Compound of Non-metal

(b) Compound of metal

(c) Botha &b

(d) None of these


62        Example of Ores is:

(a) NaHCO3

(b) Cu2S

(c) NaCl

(d) CaCO3


63        Cause of color of hair is presence of

(a) Iron compound

(b) titanium

(c) transition element

(d) molybdenum


64        Impurities associated with metal minerals are:

(a) Gangue

(b) metallurgy

(c) ores .

(d) minerals


65        Boiling range of fuel oil is :

(a) 250-350°C

(b) 350-400°C

(c) 400-500 °C

(d) 200-250 °C.


66        Kerosine oil is used as:

(a) laboratory solvent

(b) To form NACL

(c) jet fuel

(d) In ships


67        Composition of petroleum ether is :

(a) C to C10

(b) C5 to C7

(c) C13 to C15 .

(d) C to C4


68        They work in metallurgical industry:

(a) Inorganic chemists

(b) organic chemists .

(c) Both a and b

(d) None of these


69        NaHCO3 an heating produces :

(a) NaCO2

(b) Na2CO3

(c) Na2CO2

(d) NaCO3