Which of the following statements are CORRECT?
I. Ethanol is a good solvent for organic compounds.
II. Boiling and melting points of ethanol are low with respect to water.
III. Ethanol is used tincture iodine
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Which of the following statements is/are true or false?
Statements :
A) H2S burns in air to give H2O and SO2
B) The decomposition of Ferrous Sulphate into Fe2O3, SO2 and SO3 occurs in the presence of heat.
What is the position of metallic ion and non-metallic ion in a chemical formula?
Valency of an element depends on which of the following?
I. Number of losing electron
II. Number of gaining electron
III. Number of sharing electron
What is formed when helium atom loses one electron?
The vast amount of sea weeds present in oceans may produce an endless source of
An object is placed at the centre of curvature of a concave mirror. Its image is formed at