a) Sodium and chloride ions will be obtained by the electrolysis of_ .
(b) The sound waves travel slowest in_ .
(c) The vibrations and frequency less than 20 Hz is called_ .
(d) A chromatin is made up of _and _.
(e) Forest Conservation Act was passed in the year_ .
(f) Fuel produces _and _energy on combustion.
(g) Brass is an alloy of_ and_ .
(h) Viruses are made up of genetic material surrounded by a _coat.
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A ...Sodium metal and chlorine gas can be obtained with the electrolysis of molten sodium chloride. Electrolysis of aqueous sodium chloride yields hydrogen and chlorine, with aqueous sodium hydroxide remaining in solutions
b..In colloquial speech of sound refers to the speed of sound waves in air. However, the speed of sound varies from substance to substance: typically sound travels most slowly in gases, faster in liquids, and faster still in solids
c..Infrasound, sometimes referred to as low-frequency sound, describes sound waves with a frequency below the lower limit of audibility (generally 20 Hz). ... The study of such sound waves is sometimes referred to as infrasonics, covering sounds beneath 20 Hz down to 0.1 Hz (and rarely to 0.001 Hz).
d..Chromatin is the material that makes up a chromosome that consists of DNA and protein. The major proteins in chromatin are proteins called histones. They act as packaging elements for the DNA.
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