SSC CGL
Insurance
NABARD
CAPF
RBI Assistant
IBPS PO
SBI PO
Shorts SSC CGL Practice
More Articles
- Some Important & Common Facts In Chemistry
- Introduction - Chemistry
- Atomic Structure: Electron, Proton, Neutron etc.
- Periodic Classification of Elements
- Chemical Bonding
- Oxidation & Reduction
- Acids, Bases & Salts
- Behaviour of Gases
- Electrolysis
- Carbon and its Compounds
- Fuels
- Metallurgy
- Important Facts about Some Metals
- Non Metal
- Man made substances
Some Important & Common Facts in Chemistry
Common Facts
|
S. no |
Catalyst |
Process |
|
1 |
Fe + Mo |
Synthesis of NH3 by Haber's process. |
|
2 |
Ni |
Syntheses of vanaspati Ghee (hydrogenation) |
|
3 |
Pt |
Synthesis of H2SO4 by Contact process. |
|
4 |
NO |
In the manufacture of H2SO4 by the Lead chamber process |
|
5 |
Hot Al2O3 |
In the preparation of Ether from Alcohol. |
|
6 |
CuCl2 |
Preparation of chlorine gas by Deacon process. |
Some Important Explosive
- Dynamite: It was discovered Alfred Nobel in 1863. It is prepared by absorption of raw dust with Nitro-glycerin. In modern dynamite Sodium Nitrate is used in place of Nitro-glycerin.
- Tri Nitro Toluene (TNT)
- Tri Nitro Benzene (TNB)
- Tri Nitro Phenol (TNP): It is also known as picric acid.
- R.D.X is highly explosive known as plastisizer in which Aluminium powder is mixed to increase the temperature and the speed of fire.
Some Important Facts
- Age of fossils and archeological excavation is determined by radioactive carbon (C-14).
- Diamond has maximum refractive index and due to total internal reflection. It has lusture.
- Chloroform in sunlight forms poisonous gas ‘Phosgene’ (COCl2).
- To decrease the basicity of soil gypsum is used.
- In the preparation of Talcom powder theo phestal mineral is used.
- Potassium chloride is most suitable for the removal of permanent hardness of water.
- To avoid melting of ice gelatin is used.
- When dry ice is heated it is directly converted into gas.
- Saccharine is prepared from toluene.
- Cream is a type of milk in which amount of fat is increased while amount of water decrease.
- From one kilogram of honeybee 3500 calorie energy is produces.
- N2O is known as laughing gas.
- Bones contain about 58% calcium phosphate.
- Phosphine gas is used in voyage as Holmes signal.
- Chlorine gas bleaches the colour of flower.
- Red phosphorus is used in match industry.
- Urea contains 46% nitrogen.
- In the electroplating of vessel NH4Cl is used.
- Power alcohol is prepared from mixing pure alchohol in benzene which is used as rocket fuel.
- Artificial perfumes are prepared from Ethyl acetate.
- Urea was the first organic compound synthesized in Laboratory.
- Vinegar contains 10% acetic acid.
- Acetylene is used for light production.
- Ferric chloride is used to stop bleeding.
- Barium is responsible for green colour in fireworks.
- Cesium is used in solar cells.
- Yellow phosphorus is kept in water.
- Sea weeds contains iodine.
- During cooking maximum vitamin is lost.
- For the preparation of silver mirror, glucose is used.
- When cream is separated from milk, it 's density increases.
- For artificial respiration mixture of oxygen and helium gas cylinder is used.
- In cold places, to decrease the freezing point ethylene glycol is used.
- Hydrogen peroxide is used for oil paintings.
- Sodium is kept in kerosene oil.
- The heaviest element, least dense and most reductant is lithium (Li).
- Fluorine is the most oxidizing agent.
- Silver is the beat conductor of electricity.
- Radon is the heaviest gas.
- Polonium has the maximum number of isotopes.
- Sulphuric acid is known as oil of vitriol.
- Noble metals – Ag, Au, Pt, Ir, Hg, Pd, Rh, Ru, and Os.
More Related Articles
Chemistry is the branch of science which deals with the composition of matter and also the Physical and Chemical characteristics associated with the different material objects. A French chemist
by
ExamGuruAtom: The smallest particle of an element is called an atom. An atom can take part in chemical combination and does not occur free in nature. The atom of the hydrogen is the smallest and lighte
Father of periodic table – Mendeleev. The arrangement of the known elements in certain groups in such a way so that the elements with similar properties are grouped together is known as class
The force that holds together the different atoms in a molecule is called chemical bond. There are many types of chemical bond. Ionic bond or (Electrovalent bond): A bond formed by the compl
Oxidation (old concept): Oxidation is a process which involves either of the following – (i) addition of oxygen
Acid: (i) is sour in taste (ii) turns blue litmus paper into red (iii) contains replaceable hydrogen (iv) gives hydrogen ion (H+) in aqueous solution (Arrhenius theorem)
1. Boyle's law: At constant temperature, the volume of a definite mass of a gas is inversely proportional to pressure. pV = K (where K is a constant) p1V1 = p2V2 2. Chrle
1. Electrolytes: These are the substances which allow the electricity to pass through them in their molten states or in the form of their aqueous solution and undergo chemical decomposition, Ex
Carbon is non-metal having atomic number 6 and mass number 12. It is placed in group (IV) A or group 14 in periodic table. Allotropy The substances which have same chemical properties, but d
A substance that can supple energy either alone or by reacting with another substance is known as fuel. Heat produced by fuel is measured in Calories. An ideal fuel should (i) have high
