SureDen
Position.
Position of an object or point is expressed in terms of co-ordinates.Position of any point is completely expressed by two factors: Its distance from the observer and its direction with respect to observer.
That is why position is characte
Different types of Continuous Charge Distribution :
Volume Charge Distribution : it is charge distribution spread over a three dimensional volume or region V of space. Volume charge density at any point in this volume as the charge con
A wave is a disturbance which propagates energy and momentum from one place to the other without the transport of matter.
(1) Necessary properties of the me
The molecular formula of benzene has been found from analytical data, to be C6H6. Relatively higher proportion of carbon and addition of chlorine to benzene molecule indicate
A solid is that state of matter in which its constituent atoms or molecules are held strongly at the position of minimum potential energy and it has a definite shape and volum
Structure of Proteins:- The structure of proteins is quite complex. It can be studied under the following heads:-
1. Primary Structure:-
Molecular Asymmetry:-
A plane which divides an object into two symmetrical halves. Such that one half of the molecule is a mirror image of t
Ammonia is present in small quantities in air and soil where it is formed by the decay of nitrogenous organic matter such as urea.
NH2CONH2 +
Crystal Lattices and Unit Cells
Crystal lattice is the depiction of three dimensional arrangements of constituent particles (atoms, molecules, ions
Question 1: Show that the sum of (m + n)th and (m – n)th terms of an A.P. is equal to twice the mth term.
Crystalline Solids:
Amorphous solids are very useful but most of the solids are crystalline in nature due to thermodynamically favorable conditions
To give sense to the probability approach, Schrodinger in1926 derived an equation known after his name as Schrodinger's wave equation. This equation is the ba
Biomolecules
Biomicromolecules:
All living organism, from microbes to mammals, are composed of chemical substan
Power consumed by a series combination of appliance:
AS shown in fig. consider a series combination on three bulbs of power P1, P2
Fundamental Concepts in Organic Reaction Mechanism
Concept of homolytic and herterolytic fission
Organic reactions usua
Non infectious diseases:
AIDs and Cancer are explained below:
The motion of an object is called two dimensional, if two of the three co-ordinates are required to specify the position of the object in space changes w.r.t time and
Catalysis:-
A substance which changes the speed of a chemical reaction without being consumed is called catalyst and the phenomenon is called cata
What is
Common names of organic compounds
Common nomenclature
In the common system, cyanides are named by any of the following
Question 1: Find the 20th and nth terms of the G.P. 52,
Significant Figures.
Significant figures are the sum total number of reliable digits and one unreliable digit. Larger the number of significant figures obtained in a measurement, greater is the accuracy of the measurement. The reverse is also true.
Significant Figures.
Significant figures are the sum total number of reliable digits and one unreliable digit. Larger the number of significant fig
Structure of Embryo Sac (Female Gametophyte):
In angiosperms, the female ga- metophyte is called embryo sac. Embryo sac is an oval multicellular haploid structure
Question 1: How many 3-digit numbers can be formed from the digits 1, 2, 3, 4 and 5 assuming that
(i) repetition of the digits is allowed?
Structure of Ovule:
Ovule is an integumented megasporangium found in sper- matophytes which develops into seed after fertilisation. An angiosperm o
Mode of classification:
Here,individuals are classified on the basis of:
1) Arrangement of cells (level of organization
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