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Oxidising Substances : It includes oxidising substances and the organic peroxides. Oxidising substances are by themselves not combustible but by feeding oxygen to other substances cause or contribute to their combustion. Organic peroxides (having 0-0-bond) undergo thermal decomposition leading to explosion and/or rapid burning. A few of the examples are potassium permanganate, potassium dichromate, hydrogen peroxide, peracetic acid, acetyl peroxide etc.
An aneroid barometer The corrugated rubber tube from a gas mask, or a cycle grip, can be used to make a model aneroid barometer. No huge accuracy is to be expected due to the m
Test for studying suitable chemical treatment for changing the chemical nature of iodine Reactivity of iodine is tested with 1. Water and, 2. Sodium thiosulphate soluti
how many types of heterotrophic nutrition in plants?..
Explain Folic acid Folic acid is a water soluble B-vitamin that helps build healthy cells. Along with iron, this vitamin is crucial during pregnancy as you may already know
What is a hormone? A hormone, as you may already know, can be described as a chemical substance which having been formed in one particular organ or a gland is carried in the bl
Explain Vagus Nerve - Neural Control of Respiration The rhythm and depth of respiration are controlled by the reflexes from the vagus nerve. When the lungs are inflated, the
Explain the Radioactive Proteins If a sample of plasma is allowed to incubate with the radioactive iodine ( 131 I) for 30 minutes or more, some of the protein combines with iod
In what ways does over-grazing lead to soil erosion?
A balance barometer This device depends on the fact that dry air is heavier than moist air at the similar temperature. Two equal cylinders (tin cans would do) are mounted, o
To study the relation between volume and pressure of air Get a rubber bung or 'door stop' which just fits in a narrow glass jar or measuring cylinder. Attach it to the lowe
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