Peat' is an important source of domestic fuel in serveral countries. How is 'peat' formed in nature?

What is the commercial sources of cork. How is it formed in plant?

How many protein forming amino acids occur in nature?

One method of prodocing two in - phase point sources of light for interference is to form two images of a point source by means of the two halves of a lens,which has been split along a diameter[Fig.6.17]. How must the two halves of a 5 cm focal length lens be placed to form two real images sources0.24 cm apart and 20 cm from the source?

A radioactive source, in the form of a metallic sphere of radius 10^(-2)m emits beta -particles at the rate of 5xx10^(10) particles per second. The source is electrically insulated. How long will it take for its potential to be raised by 2V, assuming that 40% of the emitted beta -particles escape the source.

How to meet the needs of ever increasing population of our country ? List two main steps. Give in a tabulated form some of the crops grown in India.

Beryllium occurs naturally in the form of beryl. The metal is produced from its ore by electrolysis after the ore has been converted to the oxide and then to the chloride.How many grams of Be(s) is deposited form a BeCl_2 solution by a current of 5.0 A that flows for 1.0 h? (Atomic weight:Be=9)

Read the given passage and answers following questions : The cleansing action of soap is due to emulsification and micelle formation. Soaps are basically sodium and potassium salts of long chain fatty acids, R-COO- Na^(+) . The end of the molecule to which the sodium is attached is polar in nature, while the alkyl-end is non-polar. Thus, a soap molecule contains a hydrophilic (polar) and a hydrophobic (nonpolar) part. When soap is added to water containing dirt, the soap molecules surround the dirt particles in such a manner that their hydrophobic parts get attached to the dirt molecule and the hydrophilic parts point away from the dirt molecule. This is known as micelle formation. Thus, we can say that the polar group dissolves in water while the non-polar group dissolves in the dirt particle. Now, as these micelles are negatively charged, they do not coalesce and a stable emulsion is formed. How many parts of soaps exist ?