Answer: Question 73. MgCl2 and CaCl2 are easily hydrated, while NaCl and KCl are not hydrated. (a) Alabaster Answer: D. Cement (c) gypsum plaster X-ray detector Write the chemical equations for the reactions involved in Solvay process of preparation of sodium carbonate. Answer: Gd-doped ceria electrolytes (GDC, 10 at.% Gd) were prepared using a eutectic mixture of Li and Na carbonates as sintering aid (NLC - 0, 1, 3 and 5 mol%), using two processing routes (ceramic and chemical). (a) both (A) and (R) are correct and (R) is the correct explanation of (A) (a) Magnesium chloride, Question 32. (c) Limestone True blue fireworks arc the hardest to make since the compound copper chloride breaks down in a hot flame. Many alkaline earth metals are used in creating colours and used in fireworks. Na + H2O → NaOH + ½H2 C. Gypsum Answer: (b) Ionization energy : Li > Na > K > Rb possible dissolution routes of mono- and diuranates are discussed. Department of Materials Science and Metallurgy, Uniersity of Cambridge, Pembroke Street, Cambridge, UK, c Mention about the uses of barium. Which one of the following is called ornamental stone? Calcium plays important roles in neuromuscular function, intemeuronal transmission, cell membrane integrity and blood coagulation. D. CaSO4 .½2H2O Answer: List-I The metal is more likely be sodium. Answer: Question 38. (d) BeCO3 (d) K (c) CaCO3 > BaCO3 > SrCO3 > MgCO3 Gypsum is a soft mineral and it is less soluble in water as the temperature increases. Rock salt is major source of …………. A. Na2CO3 The anomalous behaviour of lithium is due to the exceptionally small size of the atom and high polarizing power, which is a ratio of charge to radius and hydration energy. formally request permission using Copyright Clearance Center. Why are lithium salts commonly hydrated and those of the other alkali metal ions usually anhydrous? (b) MI < MBr < MCl < MF Scavenger to remove oxygen in TV Lithium chloride (LiCl) is ionic in nature and it is soluble in polar solvent water, whereas lithium bromide and lithium iodide are covalent and are soluble in non-polar organic solvents. (d) Sodium 1. Answer: (b) Na+, K+, Question 24. Answer: Question 56. (a) p – 2, q – 1, r – 4, s – 5, t – 6, u – 3 (a) Na