Month: January 2023

Some Important Metals and their Ores

Metals are not available naturally in the form that we use. They are extracted from their ores. Metals and their ores are shown in the table below: S.No Metal Ores 1 Sodium(Na) Chile saltpetreTronaBoraxCommon salt 2 Aluminium(Al) BauxiteCorundumFeldsparCryoliteAluniteKaolin 3 Potassium(K) Nitrate(saltpetre)Carnalite 4 Magnesium(Mg) MagnesiteDolomiteEpsom saltKieseriteCarnalite 5 Calcium(Ca) DolomiteCalciteGypsumFluorsparAsbestos 6 Strontium(Sr) StrontianiteSilestone 7 Copper(Cu) CupriteCopper glanceCopper …

Some important Chemical Compounds, their Chemical Formulas, and Uses

1. Calcium Carbonate  Formula: CaCO3 Uses: Non-prescription drug for relief from acid indigestion and heartburn. It is also considered as a calcium supplement. 2. Sodium Chloride Formula: NaCl Uses: Used to season food (during food preparation and at the table), also used in the past as a method of food preservation. 3. Methane Formula: CH4 Uses: natural gas, fuel (also called …

Words for Practice for Spelling Bee – Upper Secondary Group (Grade 10, 11 & 12)

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Words for Practice for Spelling Bee – Lower Secondary Group (Grade 7, 8 & 9)

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Chemistry Quiz Questions

Which of the following is an element? (A) Diamond (B) Emerald (C) Sapphire (D) Ruby Answer: A (Graphite and Diamond are allotropes of Carbon) The catalyst used in the production of ammonia by the Haber’s process is (A) Platinum (B) Molybdenum (C) Iron (D) Nickel Answer: B Which of the following is to be found …