ECAT Chemistry Chapter 14 Group IIIA & IVA Elements Online Test With Answers

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ECAT Chemistry Chapter 14 Group IIIA & IVA Elements Online Test

Sr. # Questions Answers Choice
1 Calcium carbide reacts with water to produce Acetylene Methane Ethylene Ethane
2 Where lime is not used In refining or metals In paper industry In glass industry In the preparation of NaOH
3 Lime, calcium oxide, is used in agriculture for Adding ca metal in soil Making soil acidic Neutralizing acidic soil Adding oxygen to soil
4 Plaster of pares is obtained by heating Gypsum Epsom Lime stone Dolomite
5 Gypsum is applied to the soil to provide calcium and Oxygen Nitrogen Phosphorous Sulphur
6 Down's cell is used to prepare Sodium carbonate Sodium bicarbonate Sodium metal Sodium hydroxide
7 The ore CaSO42H2O has the general name Gypsum Dolomite Calcite Epsom salt
8 Chile saltpetre has the chemical formula NaNO<sub>3</sub> KNO<sub>3</sub> Na<sub>2</sub>B<sub>4</sub>O<sub>7</sub> Na<sub>2</sub>CO<sub>3</sub>H<sub>2</sub>O
9 The element caesium bears resemblance with Ca Cr Rubidium None of the above
10 Which of the following sulphates is not soluble in water Sodium sulphate Potassium sulphate Zinc sulphate Barium sulphate
11 Which one of the following is not an alkali metal Francium Caesium Rubidium Radium
12 Which will have the maximum value of heat of hydration Na<sup>+</sup> Cs<sup>+</sup> Ba<sup>+2</sup> Mg<sup>+2</sup>
13 The oxide of beryllium is Acidic Amphoteric Superoxide Basic
14 Which one of the following does not belong to alkaline earth metals Be Ra Ba Rn
15 Alkaline earth metals are usually Reducing agent Oxidizing agent Amphoteric Acidic
16 Which of the following compound is industrially prepared by the electrolysis of solution of NaCl Na<sub>2</sub>CO<sub>3</sub> NaHCO3 NaOH NaOCl
17 Baking powder has which one of the following formula Na<sub>2</sub>CO<sub>3</sub> Na<sub>2</sub>SO<sub>4</sub> NaHCO<sub>3</sub> K<sub>2</sub>CO<sub>3</sub>
18 The silver bromide in hypo (Na2S2O3) solution is Soluble Not soluble Precipitated Not effect
19 Which metal of Group-II A of the periodic Table, will form the least ionic chloride Be Mg Ca Sr
20 Solvay process is used in the manufacture of Na<sub>2</sub>CO<sub>3</sub> NaHCO<sub>3</sub> CaCl<sub>2</sub> All
21 Francium is an element at the bottom of Group I in the Periodic Table. Which one of the following predication is likely to be correct? It will react with water to liberate oxygen Its hydroxide will be a strong alkali in water Its carbonate will decompose on heating to give carbon dioxide Its nitrate on heating will give nitrogen dioxide and oxygen
22 Which element has highest oxidation potential Li Be Ba Ra
23 Which of the following sulphates has the highest solubility in water BaSO<sub>4</sub> CaSO<sub>4</sub> MgSO<sub>4</sub> BeSO<sub>4</sub>
24 The chemical formula of Trona is KCl . MgCl<sub>2</sub>. 6H<sub>2</sub>O Na<sub>2</sub>CO<sub>3</sub>. 2NaHCO<sub>3</sub>. 2H<sub>2</sub>O Na<sub>2</sub>CO<sub>3</sub>. H<sub>2</sub>O KCl
25 Commercial common salt becomes slight damp on storing because Common salt is hygroscope Common salt contains some impurity, which is hygroscopic Salt in efflorescent Salt is crystalline
26 Sodium should be stored in Air free from moisture Air free form carbon dioxide Under water Under kerosene oil
27 Sodium is manufacture by the electrolysis of fused sodium chloride and not from an aqueous solution of sodium chloride because Sodium chloride does not ionize in the water solution Sodium chloride is not soluble in water Sodium deposited at the cathode may react with water to form sodium hydroxide Electricity does not pass through aqueous NaCl
28 Which of the following statement is not related to Solvay's process of Na2CO3 Cheap materials Pure product Continuous process Harmful by-products
29 Which of the following equations represents the action of heat on NaHCO3
30 Some of the elements of a period show similar behavior with the elements of next group in next period this is called Vertical relationship Oblique relationship Diagonal relationship None
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