CHAPTER 3 : Metals and Non-metals
GHS (RMSA) THORALAKKI, MALUR TALUK, KOLAR DISTRICT
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1) Which of the following property is generally not shown by metals? *
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2) The ability of metals to be drawn into thin wire is known as : *
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3) Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same? (i) Good thermal conductivity(ii) Good electrical conductivity (iii) Ductility (iv) High melting point *
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4) Which one of the following metals do not react with cold as well as hot water? *
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5) Which of the following oxide(s) of iron would be obtained on prolonged reaction of iron with steam? *
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6) What happens when calcium is treated with water? (i) It does not react with water (ii) It reacts violently with water (iii) It reacts less violently with water (iv) Bubbles of hydrogen gas formed stick to the surface of calcium *
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7) Generally metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except Mn and Mg)? *
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8) The composition of Aqua-Regia is : *
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9) Which of the following are not ionic compounds?(i) KCl (ii) HCl (iii) CCl4 (iv) NaCl *
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10) Which one of the following properties is not generally exhibited by ionic compounds? *
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11) Which of the following metals exist in their native state in nature? (i) Al (ii) Au (iii) Zn (iv) Ag *
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12) Which of the following metals are refined by electrolytic refining? *
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13) Silver articles become black on prolonged exposure to air. This is due to the formation of : *
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14) Galvanization is a method of protecting iron from rusting by coating with a thin layer of : *
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15) In Stainless steel, iron is mixed with *
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16) If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of : *
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17) Which one of the following metals is found in liquid state at room temperature? *
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18) Which of the following metals are obtained by electrolysis of their chlorides in molten state ? (i) Na (ii) Ca (iii) Fe (iv) Cu *
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19) Generally non-metals are not lustrous. Which of the following nonmetal is lustrous? *
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20) Which one of the following four metals would be displaced from the solution of its salts by other three metals? *
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21) An alloy is : *
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22) An electrolytic cell consists of : *
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23) During electrolytic refining of copper, it gets : *
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24) An element A is soft and can be cut with a knife. This is very reactive to air and cannot be kept open in air. It reacts vigorously with water. Identify the element from the following : *
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25) Alloys are homogeneous mixtures of a metal with a metal or nonmetal. Which among the following alloys contain non-metal as one of its constituents? *
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26) Which among the following statements is incorrect for magnesium metal? *
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27) Which among the following alloys contain mercury as one of its constituents? *
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28) X loses electron and Y gains electron. Reaction between X and Y, forms compound Z. Which of the following properties is not shown by Z? *
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29) The electronic configurations of three elements X, Y and Z are X — 2, 8; Y — 2, 8, 7 and Z — 2, 8, 2. Which of the following is correct? *
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30) Although metals form basic oxides, which of the following metals form an amphoteric oxide? *
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31) Generally, non-metals are not conductors of electricity. Which of the following is a good conductor of electricity? *
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32) Electrical wires have a coating of an insulting material. The material, generally used is : *
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33) Which of the following non-metals is a liquid? *
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34) Which of the following can undergo a chemical reaction? *
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35) Which one of the following figures correctly describes the process of electrolytic refining? *
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36) Which of the following pairs will give displacement reactions? *
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37) Which of the following methods is suitable for preventing an iron frying pan from rusting? *
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38) An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be : *
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39) Food cans are coated with tin and not with zinc because : *
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40) Solution of which of the following oxides in water will change the colour of blue litmus to red ? *
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Action of Steam on a Metal :
Testing the conductivity of a salt solution :
Electrolytic refining of copper :
 Formation of sodium chloride :
Formation of magnesium chloride :
Steps involved in the extraction of metals from ores :
Activity series : Relative reactivities of metals :
GOPALA RAO C K
GHS (RMSA) THORALAKKI, MALUR TALUK, KOLAR DISTRICT 563137
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