SureDen
Air Pollution:-
Any undesirable change in composition of air which is harmful for living organism.
Causes of air pollutio
Heavy water:
Preparation of heavy water
Heavy water is prepared either by prolonged electrolysis or by fractional disti
Water pollution:-
Any undesirable change in composition of water which is harmful for living organism.
About 99.9% water is pure, only 0.1% impurity make unfit for domestic purposes.
0.1% impurity include:
1. Suspen
Active Transport: Uses energy to pump molecules against a concentration gradient. Casparian strip presents in the endodermis (the i
Water:
Structure of water:
In the Earth's biosphere, water is essential to all forms of lifeAbout 75% of the Eart
In plants, special long distance transport is necessary as sites of production or absorption and sites for storage too far and at much faster rate. This is generally done by m
Ortho and Para hydrogen:
A molecule of dihydrogen contains two atoms, in which the nuclei of both the atoms are spinning. Depending upon the direct
Quality of diesel - cetane number
Cetane number is defined as the percentage of cetane in a mixture of cetane and -methyl naphthalene, which has th
Water provides medium in which many substances are dissolved. Protoplasm of cell is consist of water in which different molecules are dissolved and suspended.
A wat
Introduction
Everything in this universe
Transpiration:- The loss of water through stomata in the leaves is called transpiration.
- It is evaporative loss of water through
Medicines:- Medicines in colloidal form are easily absorbed by the body tissues and hence are more effective.
Sewage dispos
Emulsions:-
Emulsions are the colloidal solutions of liquid. Both the dispersed phases as well as dispersion medium are the liquids. The two liqui
Fuel cells:- Cells which can convert energy produced during the confusion of fuels directly into electrical energy. Fuel can be hydrogen, methane, methanol et
Algae
-Algae are chlorophyll-bearing, simple, autotrophic and largely aquatic organisms.
-They occur in a variety of habitats like moist damp places .Some of them also occur in a-ssociation with fungi (lichen) and animals.
- They occur as unice
Osmo-regulatory role of kidney:
Water: Excess of water in blood increases the volume of
(1) When mercury is split on a clean glass plate, it forms gl
Biological oxygen demand:
It refers to the amount of oxygen consumed if all the organic matter in one litre of water is oxidized by bacteria.
It states that if gravity effect is neglected, the pressure at every point of liquid in equilibrium of rest is same.
Origin of coal and petroleum
Coal and petroleum have organic origin, being decomposed plant and animal matter buried deep inside the earth. Coal is
Physical properties of aliphatic aldehydes and ketones
Aldehydes and ketones are simple compounds which contain acarbonyl group - a carbon-oxygen d
2.Osmosis and osmotic pressure:-
Osmosis may be defined as “The process of passage of solvent from solution of lower concentration into the
Solvent property of water:
The polarity of water: Water has a simple molecular structure. It is composed of one oxygen atom and
VITAMINS
Vitamins may be defined as a group of biomolecules (other than fats, carbohydrates and proteins) which are required in small amounts for n
Preparation of colloidal solutions:-
The Lyophoilic sols are prepared simply by mixing the dispersed phase in the dispersion medium.
Bu
Hess’s Law
It is states that total enthalpy change that occur in physical & chemical process is the same whether the process
Urine Formation:
The process of formation of urine is called Uropoiesis. This process involves three steps:
(1) Formation of double bubble : If r1 and r2 are the radii of smaller and larger bubble and P0 is the atmospheric
Agents of Pollination:
1) Abiotic agents:
a) &
Coming Soon...