MCQ Questions for Class 10 Science Metals and Non-Metals with Answers

Free PDF Download of CBSE Class 10 Science Metals and Non-Metals Multiple Choice Questions with Answers. Science Multiple Choice Questions with Answers for Class 10 are Prepared Based on Latest Exam Pattern. Students can solve mcq questions for class 10 Science Metals and Non-Metals to know their preparation level.

Class 10 Science MCQ Chapter 3 Metals and Non-Metals

Question 1. Aluminium is used for making cooking uten¬sils. Which of the following properties of alu¬minium are responsible for the same?
(i) Good thermal conductivity
(ii) Good electrical conductivity
(iii) Ductility
(iv) High melting point
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iii)
(d) (i) and (iv)

Question 2. The most abundant metal in the earth’s crust is
(a) Iron
(b) Aluminium
(c) Calcium
(d) Sodium

Question 3. The poorest conductor of heat among metals is
(a) Lead
(b) Mercury
(c) Calcium
(d) Sodium

Question 4. Which property of metals is used for making bells and strings of musical instruments like Sitar and Violin?
(a) Sonorousness
(b) Malleability
(c) Ductility
(d) Conductivity

Question 5. Al₂O₃ + 2NaOH → …… + H₂O
(a) Al(OH)₃
(b) Na₂O
(c) NaAlO₂
(d) AlNaO₂

Question 6. Which of the following is the correct arrange-ment of the given metals in ascending order of their reactivity?
Zinc, Iron, Magnesium, Sodium
(a) Zinc > Iron > Magnesium > Sodium
(b) Sodium > Magnesium > Iron > Zinc
(c) Sodium > Zinc > Magnesium > Iron
(d) Sodium > Magnesium > Zinc > Iron

Question 7. Which of the following pairs will give dis-placement reactions?
(a) FeSO₄ solution and Copper metal
(b) AgNO₃ solution and Copper metal
(c) CuSO₄ solution and Silver metal
(d) NaCl solution and Copper metal

Question 8. Non-metals form covalent chlorides because
(a) they can give electrons to chlorine
(b) they can share electrons with chlorine
(c) they can give electrons to chlorine atoms to form chloride ions
(d) they cannot share electrons with chlorine atoms

Question 9. Which of the following oxide(s) of iron would be obtained on prolonged reaction of iron with steam?
(a) FeO
(b) Fe₂O₃
(c) Fe₃O₄
(d) Fe₂O₃ and Fe₂O₄

Question 10. Which of tire following are not ionic compounds?
(i) KCl
(ii) HCl
(iii) CCl₄
(iv) NaCl
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (i) and (iii)

Question 11. The electronic configuration of three elements X, Y and Z are as follows:
X = 2, 4, Y = 2, 7, Z = 2,1 Which two elements will combine to form an ionic compound and write the correct formula,
(a) X₂Y
(b) YZ
(c) XZ_{3</sub
(d) Y2Z}

Question 12. The highly reactive metals like Sodium, Potas-sium, Magnesium, etc. are extracted by the
(a) electrolysis of their molten chloride
(b) electrolysis of their molten oxides
(c) reduction by aluminium
(d) reduction by carbon

Question 13. Which of the following non-metal is lustrous?
(a) Sulphur
(b) Oxygen
(c) Nitrogen
(d) Iodine

Question 14. Example of an amphoteric oxide is:
(a) Na₂O
(b) K₂O
(C) Al₂O₃
(d) MgO

Question 15. Which one among the following is an acidic oxide?
(a) Na₂O
(b) CO
(c) CO₂
(d) Al₂O₃

Question 16. The atomic number of an element ‘X’ is 12. Which inert gas is nearest to X?
(a) He
(b) Ar
(c) Ne
(d) Kr

Question 17, The process in which a carbonate ore is heated strongly in the absence of air to convert it into metal oxide is called
(a) Roasting
(b) Reduction
(c) Calcination
(d) Smelting

Question 18. Oxides of moderately reactive metals like Zinc, Iron, Nickel, Tin, Copper etc. are reduced by using
(a) Aluminium as reducing agent
(b) Sodium as reducing agent
(c) Carbon as reducing agent
(d) Calcium as reducing agent

Question 19. In thermite welding a mixture of …… and …… is ignited with a burning magnesium ribbon which produces molten iron metal as large amount of heat is evolved.
(a) iron (III) oxide and aluminium powder
(b) iron (II) oxide and aluminium powder
(c) iron (III) chloride and aluminium powder
(d) iron (III) sulphate and aluminium powder

Question 20. Galvanisation is a method of protecting iron from rudftng by coating with a thin layer of
(a) Galium
(b) Aluminium
(c) Zinc
(d) Silver

Question 21. An element X 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
(a) Mg
(b) Na
(c) P
(d) Ca

Question 22. Reaction between X and Y forms compound Z. X loses electron and Y gains electron. Which of the following properties is not shown by Z?
(a) Has high melting point
(b) Has low melting point
(c) Conducts electricity in molten state
(d) Occurs as solid

Question 23. The electronic configurations of three ele¬ments X, Y and Z are X — 2, 8; Y — 2, 8, 7 and Z — 2, 8, 2. Which’of the following is correct?
(a) X is a metal
(b) Y is a metal
(c) Z is a non-metal
(d) Y is a non-metal and Z is a metal

Question 24. Amalgam is an alloy of
(a) Copper and Tin
(b) Mercury
(c) Lead and Tin
(d) Copper and Zinc

Question 25. Copper objects lose their shine and form green coating of
(a) Copper oxide
(b) Copper hydroxide and Copper oxide
(c) Basic Copper carbonate
(d) Copper carbonate

Fill in the blanks

1. Elements can be classified as ……… and ……. .
2. Two examples of metals which are poor conductors of heat are ………, ……… .
3. Two metals which melt when kept on the palm are ………, ……… .
4. A non-metal which is a good conductor of electricity is ……… .
5. Metals can form positive ions by ……… .
6. A non-metal which is lustrous is ……… .
7. A metal which burns in air with a dazzling white flame is ……… .
8. Metals above hydrogen in the activity series can displace ……… from dilute acids.
9. The extraction of metals from their ores and then refining them for use is known as ……… .
10. ……… is an allotroph of carbon and is the hardest natural substance.
11. Metals which are so soft that they can be cut with a knife are ………, ………
12. Metal oxides ……… and ……… dissolve in water to form alkalis.

Answers

1. metals, non-metals
2. Lead, Mercury
3. Gallium, Caesium
4. Graphite
5. losing electrons
6. Iodine
7. Magnesium
8. Hydrogen
9. metallurgy
10. Diamond
11. Sodium, Potassium
12. Sodium Oxide and Potassium oxide
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