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The number of moles of Calcium oxide in 672 g is
Choose the most appropriate answer from the following options : Identify the metallic oxide which is amphoteric in nature : Calcium oxide Barium oxide Zinc oxide Copper(ll)oxide
(a) Write the electron dot structure for calcium and oxygen. The atomic numbers of calcium and oxygen are 20 and 8 respectively. (b) Show the formation of calcium oxide by the transfer of electrons. (c) Ionic compounds are high melting solids. Give reason.
Magnesium is an element of group 2 of the periodic table. It forms compounds such as (i) magnesium oxide, MgO, (ii) magnesium hydroxide, Mg(OH)_2 , (iii) magnesium sulphate, MgSO_4 and (iv) magnesium chloride, MgCl_2 . Calcium is also an element of group 2. Write the formulae of calcium oxide, calcium hydroxide, calcium sulphate and calcium chloride.
The commerical name of polymethyl (methacrylate)is:
The radius of a calcium ion is 94 pm and of an oxide ion is 146 pm. Predict the crystal structure of calcium oxide.
The radius of calcium ion is 94 pm and of oxide ion is 146pm. Predict the crystal structure of calcium oxide.
Write skeletal equations for the following word equations. calcium carbonate to calcium oxide + carbon dioxide
What is the commerical source of cork ? How is it formed in the plant ?
Statement 1:Plexiglas is the commerical name of PMMA Statement 2:It is used in making contact lens.because it has an excellent lighr=transmission property.
JEE MAINS PREVIOUS YEAR ENGLISH-JEE MAINS-QUESTION
