General Knowledge For FPSC, PPSC, NTS, CSS And Various Exams CHEMICAL FORMULAE Part 3
General Knowledge For FPSC, PPSC, NTS, CSS
And Various Exams
(CHEMICAL FORMULAE)
Part 3
- Liquid sodium is used a coolant in nuclear reactor
- Plutonium-239 is a good nuclear fuel
- Aviation fuel for jet aeroplanes consists of purified kerosene
- Co2 is used in fir extinguishers
- Cooking gas is oxygen+methane
- Hydrogen has the highest fuel value
- Ripening of fruits is hastened by Ethylene gas
- Iron rusts due to formation of a mixture of ferrous and ferric hydroxide
- Chemically soap is a salt
- Dalton’s atomic theory gave the concept of Valency
- When radioactive rays are passed through air or any gas , they cause it to ionize
- Formic acid is present in sour milk
- Butane gas is used in cigarette lighters
- LPG contains Butane and propane
- In soft drinks Co2 is used
- Rust stains on cloth is revoved by Oxalic Acid solution
- Acid in lemon and grape fruit is Citric Acid
- Permanent magnets are make from Ferromagnetic substances
- Melting point of Tungsten is 3000 deg: C
- Mercury is used as a solvent in refining silver
- Serenium is non-metal substance.
- Aqua Regia is the mixture of Nitric Acid and HCL in 1:3.
- Sodium Benzoate is used to preserve food articles.
- Gas used for purification of water is chlorine
- Formic Acid is used in dying, tanning and electroplating.
- In galvanization iron sheet is coated with Zinc
- Mahalanobis model laid great emphasis on development of heavy industries.
- Oxidation is the process in which electron is lost.
- Camphor exhibits the property of sublimation.
- Gypsum salt is CaSo4 + 2H2O.
- Excessive use of fertilizers causes death of plants due to exomosis.
- Sodium Benzoate is used to preserve food articles.
- Bee stings contain formic acid
- BHCC Benzene Hex chloride is used for killing for insects.
- Opposite of acid is alkali
- Pure water has pH of 7
- pH scale ranges from 0-14
- Cola drinks contain phosphoric acid to give them flavor
- People used to treat bee stings by rubbing them with bicarbonate of soda
- Acid contains hydrogen and react with metals such as iron and zinc, they give off hydrogen
- Acid turns litmus paper red
- Alkali turns litmus paper blue
- Alkalis are part of a group of chemicals called bases.
- Alkalis are bases that dissolve in water, have bitter taste and feel soapy
- When an acid meets an alkali both are changed- they are neutralized.
- When acid meets alkali salt and water is produced
- Stomach produces hydrochloric acid
