Chemical Industries involve the production and processing of chemicals for various applications, including manufacturing, agriculture, pharmaceuticals, and energy. These industries utilize chemical reactions and processes to create essential products like fertilizers, plastics, and medicines.
Chemistry 10th class chapter 8 Notes
Formula of soda ash is: Na2CO3
Which one of the following is manufactured by Solvar’s process: washing soda
Matte is a mixture of: Cu2S and FeS
In forth flotation process the ore particles are preferentially wetted by: oil
Process of heating the concentrated ore to high temperature in excess of air is called: Roasting
Concentration is a separating technique in which mineral is separated from: Gangue
Which one of the not metal: Carbon
How many % age of nitrogen present in air by volume: 78%
Petroleum fraction having composition C7 to C10 IS called: Gasoline or petrol
The number of carbon atoms present in fuel oil: 15-18
In solvay’s process slaked lime is used to: Recover ammonia
Manufacturing of urea involves: 3 steps
When NaHCO3 is heated it forms: CO2
Which one of the following is not a fraction of petroleum: Alcohol
Catalyst used in Haber’s process is: Fe
How many percentage blister copper is pure: 98%
Ammonical brine is prepared by dissolving ammonia gas in: NaCl
Which one of the following organic compound is found is gasoline: C7H10
Urea is nitrogenous fertilizer. It consist of nitrogen: 46.60%
Extraction of metals from its ores is called: Metallurgy
Bister copper is pure about: 98%
The number of carbon atoms present in petroleum gas: 4-Jan
Formula of baking soda is: NaHCO3
the chemical formula of chalcopyrite is: CuFe2S
Compound of metal exist under earth crust are called: Minral
On which bases froth floatation process take place: Density bases
The elements that do not conduct heat and electricity are called: Non metal
Chemical formula of matte will: Cu2S.FeS
Chemical formula of copper glance is: Cu2S
At the time of partition, How many industries wee present in Pakistan: 34
Composition of carbon in kerosene oil is: C10-C12
Blonde hair contains compounds of: titanium
Which contains sufficient amount of metal: Ores
In the bessemerization process: Molten matte is heated
When copper pyrite (CuFeS2) is strongly heated in excess of airit converted into mixture of: Cu2S + FeS
How many % age of nitrogen in urea fertilizers: 46.6
Froth flotation process is used to concentrate: Copper ore
Blonde hair contains compound of: titanium
Which one of the following is not faction of crude oil: Fuel oil
Concentration is process of: Separating technique
When CO2 is passed through the ammonical brine the only salt that precipitates is: NaHCO3
Ammonia is prepared by the process: Haber
In smelting process a small amount of coke is required because: it is highly exothermic process
The number of carbon atoms present in gasoline or petrol: 10-Jul
Imperial chemical industries was established in: 1944
The number of carbon atoms present in diesel oil: 13-15
How many % age of urea is used as fertilizers: 90%
Froth flotation process is used to concentrate the ore on: Wetting basis
Concentration is a: Separating technique
Concentration of copper are is carried out by process: Forth floatation
Chalco-Pyrite is an ore of: Copper
Concentration of the copper ore is carried out by: Forth flotation
Which one is not the fraction of residual oil: Fuel oil
Sindh alkalies limited was established near Karachi in: 1966
Ammonia is prepared by: Haber’s process
Brown hair contains: Copper compound
Which one of the following is used as jet fuel: Diesel oil
How many units are in Pakistan for manufacturing of Urea: 6
Chalco-pyite is an ore of: copper
When crude oil is heated in the fractionating tower: Vapour of higher boiling point fraction condense first in the lower part of the tower
When NaHCO3 is heated if forms: CO2
Composition of carbon in the diesel oil: C13-C15
The number of carbon atoms present in petroleum ether: 7-May
Petroleum fraction having composition C5 to C7 is: Kerosine oil
Red hair contains compound of: Molybdenum
The nitrogen present in urea is used by plants to synthesize: DNA
The process of removal of gangue form the ore is technically known as: concentration
A saturated solution of sodium chloride is called: Brine
Formula of Urea is: H2N-CO-NH2
Crude oil is heated to the fractionating furnace upto: 400oC
The impurities associated with the minerals are known as: Gangue
The number of carbon atoms present in kerosene oil: 12-Oct
The process of roasting during metallurgy of copper is carried out in a special furnace called: Reverberatory furnace
Important : Review all previous years’ 10 class past papers for comprehensive practice and better exam preparation.