ECAT Chemistry MCQ's Test For Full Book With Answers

ECAT Chemistry MCQ's Test For Full Book

Sr. # Questions Answers Choice
1 s-block elements belong to groups I-A & II-A III-A to VIII-A I-B to X-B Lanthanides
2 Which alkaline earth metal makes peroxide? Be Mg Ca Ba
3 CO2absorber used in breathing tanks is K<sub>2</sub>O<sub>2</sub> K<sub>2</sub>O KO<sub>2</sub> Na<sub>2</sub>O<sub>2</sub>
4 acidic soils are neutralized by adding plaster of paris brine lime milk of magnesia
5 Cement plaster is made by mixing plaster of paris with glue or oil gypson glycol alum or borax
6 Gypsom added in cement is 1% 2% 3% 4%
7 Lime is often used as an agent dehydrating hydrating oxidizing reducing
8 Milk of lime is MgO CaO Ca(OH)<sub>2</sub> Mg(OH)<sub>2</sub>
9 Chlorophyll contains in it Li Na Mg Ca
10 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>
11 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
12 Maximum shielding effect is observing in Li Be Mg Ca
13 Decomposition of carbonate of alkaline earth metals produce gas N<sub>2</sub> Oxide CO<sub>2</sub> CO
14 Diaphragm cell is used to prepare sodium sodium hydroxide calcium magnesium
15 Which oxide is insouluble Li<sub>2</sub>O Na<sub>2</sub>O K<sub>2</sub>O BaO
16 Which are being formed by alkali metals? oxides nitrides carbides peroxides
17 Which are being formed by alakli metals? oxides nitrides carbides peroxides
18 All alkali metals react with acetylene to form acetylides except Li Na K Rb
19 Carbonates of alkaline earth metals decomposes to respective metal oxides nitrates sulphates CO<sub>2</sub>
20 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>
21 The mineral CaSO4.2H2O has the general name gypsum dolomite calcite epsom salt
22 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
23 Which of the following sulphates is not soluble in water? Sodium sulphate Potassium sulphate Zinc sulphate Barium sulphate
24 Which one of the following is not an alkali metal? Francium Caesium Rubidium Radium
25 Which ion will have the maximum value of heat of hydration? Na<sup>+</sup> Cs<sup>+</sup> Ba<sup>+</sup> Mg<sup>+2</sup>
26 The oxides of beryllium are acidic basic amphoteric none of these
27 Which one of the following does not belong to alkaline earth metals? Be Ra Ba Rn
28 A state function is a Microscopic property Macroscopic Unique property Both a and c
29 By comparing both initial and final states of the system, we can describe the change taking place in the Surrounding Both a and c System None of above
30 Reaction between Zn and CuSO4can be called a system under Surrounding Observation system None of above
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