why high availability

Hydrogen is not available as such. It does not occur in a free state in nature. The cheap production of hydrogen is a basic requirement of hydrogen economy. The source of hydrogen is water and using nuclear energy or solar energy might generate i..

Since Haber's process proceeds with a decrease in volume, it is favored by high pressure. In actual practice, a pressure of 200 - 900 atmospheres is employe..

Polymers are classified based on their source of availability as follows: 1. Naturally occurring polymers 2. Semi synthetic polymers 3. Synthetic polyme..

Soil is a living medium consisting of physical part - called as soil particles, chemical part - consisting of various compounds as well as biological part - consisting of various microbes, vertebrates, invertebrates inhabiting in soil. Unless all these components are kept in harmony, the crop plant..

Polymers are classified based on their source of availability as follows: 1. Naturally occurring polymers 2. Semi synthetic polymers 3. Synthetic polyme..

Soil is the major source of water for plants. The plants absorb water through root hairs from the soil. The total water content present in the soil is called holard. Out of this, the water which can be absorbed by plants is chresard and remaining is called echard. Broadly we can recognize the fol..

When the soil gets dry, soil solution becomes more concentrated and the rate of absorption by cells decreases. This leads to reduction in transpiration and stomata close quickly to keep the water loss to minim..

As a result of sustained research in agriculture, many high yielding varieties /hybrids have been released in our countries (India 2000). In rice, more than 600 high yielding, early maturing, dwarf disease resistant varieties have been evolve..

Density of population in many cities and urban centers is so high that their respiration has caused imbalance in air composition. Their constant intake of oxygen and release of carbon dioxide has the potentiality to change the composition of ai..

Halogens have very high electron affinity values and therefore, have very strong tendency to gain an electron. Thus halogens are very reactive elements due to their low dissociation energies and high electron affinity values. As clear from the values of bond dissociation energi..