Jeemain 2015 ,questions and answers
Part-1 Physics
Part-1 Physics
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Saturday, 13 June 2015
Tuesday, 9 June 2015
Man's taxonomical categories
Man 's taxonomical categories
Common name : Man
Scientific name : Homo sapiens
Species name : sapiens
Genus : Homo
Family : Hominidae
Order : primata
Class : Mamalia
Phylum : chordata
Kindom: Animal kingdom(animalia)
Common name : Man
Scientific name : Homo sapiens
Species name : sapiens
Genus : Homo
Family : Hominidae
Order : primata
Class : Mamalia
Phylum : chordata
Kindom: Animal kingdom(animalia)
Carl linnaeus's hierarchial system
Structure and some examples of caroul linnaeus's hierarchiel system
There are 7 obligate taxa
Species,genus,family, order, class
Phylum/ division , kingdom
There are 7 obligate taxa
Species,genus,family, order, class
Phylum/ division , kingdom
Friday, 5 June 2015
Thursday, 4 June 2015
Classification of Animals, Kingdom Animalia
Broad classification of kingdom animalia
Based on common fundamental features
Based on common fundamental features
Wednesday, 3 June 2015
law of conservation of mass, lavoisier
Law of conservation of mass was introduced by Antoine Lavoisier
The matter can neither be created , nor distroyed. But one form of the matter can be convert to another form
The law of conservation of mass, or principle of mass conservation, states that for any system closed to all transfers of matter andenergy(both of which have mass),themassof the system must remain constant over time, as system mass cannot change quantity if it is not added or removed. Hence, the quantity of mass is "conserved" over time. The law implies that mass can neither be created nor destroyed, although it may be rearranged in space, or the entities associated with it may be changed in form, asfor example when light orphysicalworkis transformed into particles that contribute the same mass to the system as the light or work had contributed. The law implies (requires) that during anychemical reaction,nuclear reaction, orradioactive decayin an isolated system, the total massof the reactants or starting materials must be equal to the mass of the products.
The matter can neither be created , nor distroyed. But one form of the matter can be convert to another form
The law of conservation of mass, or principle of mass conservation, states that for any system closed to all transfers of matter andenergy(both of which have mass),themassof the system must remain constant over time, as system mass cannot change quantity if it is not added or removed. Hence, the quantity of mass is "conserved" over time. The law implies that mass can neither be created nor destroyed, although it may be rearranged in space, or the entities associated with it may be changed in form, asfor example when light orphysicalworkis transformed into particles that contribute the same mass to the system as the light or work had contributed. The law implies (requires) that during anychemical reaction,nuclear reaction, orradioactive decayin an isolated system, the total massof the reactants or starting materials must be equal to the mass of the products.
law of multiple proportion, john dalton
Law of multiple proportion introduced by, JOHN DALTON
In chemistry, thelaw of multiple proportionsis one of the basiclawsofstoichiometryused to establish theatomic theory, alongside thelaw of conservation of mass(matter) and thelaw of definite proportions. It is sometimes calledDalton's Lawafter its discoverer, theBritishchemistJohn Dalton,who published it in the first part of the first volume of his "New System ofChemical Philosophy" (1808).The statement of the law is:
If twoelementsform more than onecompoundbetween them, then the ratios of the masses of the second element which combine with a fixed mass of the first element will be ratios of smallwhole numbers.
In chemistry, thelaw of multiple proportionsis one of the basiclawsofstoichiometryused to establish theatomic theory, alongside thelaw of conservation of mass(matter) and thelaw of definite proportions. It is sometimes calledDalton's Lawafter its discoverer, theBritishchemistJohn Dalton,who published it in the first part of the first volume of his "New System ofChemical Philosophy" (1808).The statement of the law is:
If twoelementsform more than onecompoundbetween them, then the ratios of the masses of the second element which combine with a fixed mass of the first element will be ratios of smallwhole numbers.
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