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3 years ago Palak23 jee jee main the s block elements Which is incorrect statement? (a) The heats of hydration of the dipositive alkaline earth metal decrease with an increase in their ionic size 3 years ago Palak23 jee jee main the s block elements If NaOH is added to an aqueous solution of Zn^2+ ions, a white precipitate appears and on adding excess NaOH, the precipitate dissolves. In this solution zinc exists in the 3 years ago Palak23 jee jee main the s block elements Mg2C3 reacts with water forming propyne gas. C3^4- ions has 3 years ago Palak23 jee jee main the s block elements Which of the following statement about the sulphate of alkali metal is correct? (a) Except Li2SO4 all sulphate of other alkali metals are soluble in water 3 years ago Palak23 jee jee main the s block elements CaCl2 is preferred over NaCl for clearing ice on roads particularly in very cold countries. This is because: 3 years ago Palak23 jee jee main the s block elements Which is not obtained when metal carbides react with H2O? 3 years ago Palak23 jee jee main the s block elements The difference of number of water molecules in gypsum and plaster of Paris is 3 years ago Palak23 jee jee main the s block elements For which one of the following minerals, the composition given is incorrect? 3 years ago Palak23 jee jee main the s block elements Amongst the following hydroxides, the one which has the lowest value of Ksp is 3 years ago Palak23 jee jee main the s block elements A solid compound ‘X’ on heating gives CO2 gas and a residue. The residue mixed with water forms ‘Y’. On passing an excess of CO2 through ‘Y’ in water, a clear solution ‘Z’, is obtained. On boiling ‘Z’, compound ‘X’ is reformed. The compound ‘X’ is 3 years ago Palak23 jee jee main the s block elements Which one is the correct statement with reference to solubility of MgSO4 in water? 3 years ago Palak23 jee jee main the s block elements Calcium imide on hydrolysis gives gas (B) which on oxidation by bleaching powder gives gas (C). Gas (C) on reaction with magnesium give compound (D) which on hydrolysis gives again gas (B). Identify (B), (C) and (D). 3 years ago Palak23 jee jee main the s block elements Among the given statements, the incorrect one is (a) Be differs much from other alkali metals than Li does from other alkali metals. (b) Be generally forms covalent compounds. 3 years ago Palak23 jee jee main the s block elements Two metals (A) and (B) belong to the same group of the periodic table. Metal (A) forms an insoluble oxide but a soluble sulphate, metal (B) forms a soluble oxide but an insoluble sulphate. 3 years ago Palak23 jee jee main the s block elements Acidified solution of sodium thiosulphate is unstable because in thiosulphate 3 years ago Palak23 jee jee main the s block elements The metal X is prepared by the electrolysis of fused chloride. It reacts with hydrogen to form a colourless solid from which hydrogen is released on treatment with water. The metal is 3 years ago Palak23 jee jee main the s block elements The pair of compounds which cannot exist together in solution is 3 years ago Palak23 jee jee main the s block elements Which of the following statements is correct for CsBr3? (a) It is a covalent compound. 3 years ago Palak23 jee jee main the s block elements When a crystal of caustic soda is exposed to air, a liquid layer is deposited because 3 years ago Palak23 jee jee main the s block elements Page 1 / 3 1 2 3 Next Share: Super Globals Requests: Server: Options and Features route: community use_home_url: url: https://eanshub.com/community/ pageid:187 default_groupid: 3 2022 How Can We Help? Δ Home About Us Contact Us Privacy Policy Term of Use Copyright © 2020 Eanshub All Rights Reserved