ECAT Chemistry Chapter 13 S-Block Elements Online Test With Answers

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ECAT Chemistry Chapter 13 S-Block Elements Online Test

Sr. # Questions Answers Choice
1 Lime is often used as an agent dehydrating hydrating oxidizing reducing
2 Milk of lime is MgO CaO Ca(OH)<sub>2</sub> Mg(OH)<sub>2</sub>
3 Chlorophyll contains in it Li Na Mg Ca
4 Which is insoluble carbonate? KCO<sub>3</sub> CaCO<sub>3</sub> Na<sub>2</sub>CO<sub>3</sub> K<sub>2</sub>CO<sub>3</sub>
5 Which is plaster of paris? CaSO<sub>4</sub>.H<sub>2</sub>O (CaSO<sub>4</sub>)<sub>2</sub>.H<sub>2</sub>O CaSO<sub>4</sub>.2H<sub>2</sub>O CaSO<sub>4</sub>.3H<sub>2</sub>O
6 Maximum shielding effect is observing in Li Be Mg Ca
7 Decomposition of carbonate of alkaline earth metals produce gas N<sub>2</sub> Oxide CO<sub>2</sub> CO
8 Diaphragm cell is used to prepare sodium sodium hydroxide calcium magnesium
9 Which oxide is insouluble Li<sub>2</sub>O Na<sub>2</sub>O K<sub>2</sub>O BaO
10 Which are being formed by alkali metals? oxides nitrides carbides peroxides
11 Which are being formed by alakli metals? oxides nitrides carbides peroxides
12 All alkali metals react with acetylene to form acetylides except Li Na K Rb
13 Carbonates of alkaline earth metals decomposes to respective metal oxides nitrates sulphates CO<sub>2</sub>
14 Which element is deposited at the cathode during the electrolysis of brine in Nelson's cell? H<sub>2</sub> Na Cl<sub>2</sub> O<sub>2</sub>
15 The mineral CaSO4.2H2O has the general name gypsum dolomite calcite epsom salt
16 Chile saltpetre has the chemical formule 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
17 Which of the following sulphates is not soluble in water? Sodium sulphate Potassium sulphate Zinc sulphate Barium sulphate
18 Which one of the following is not an alkali metal? Francium Caesium Rubidium Radium
19 Which ion will have the maximum value of heat of hydration? Na<sup>+</sup> Cs<sup>+</sup> Ba<sup>+</sup> Mg<sup>+2</sup>
20 The oxides of beryllium are acidic basic amphoteric none of these
21 Which one of the following does not belong to alkaline earth metals? Be Ra Ba Rn
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