Here you have got MCQ Questions for Class 10 Science Metals and Non-Metals with Answers. These will help you with getting prepare with the important Questions for these chapters. It also helps in the revision of the whole concept clearly. It gives an idea about what types of questions can be asked in the examination. These MCQ Questions are prepared as per the Latest Exam Pattern and syllabus. Students can solve these Class 10 Science MCQ Questions of Metals and Non-Metals with Answers and evaluate your exam preparation level.
Practice the listed 25 MCQ Questions which are given below and score better marks in the exams: -
1. The most abundant metal in the earth’s crust is
(a) Iron
(b) Aluminium
(c) Calcium
(d) Sodium
2. The poorest conductor of heat among metals is
(a) Lead
(b) Mercury
(c) Calcium
(d) Sodium
3. 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
4. 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
5. The highly reactive metals like Sodium, Potassium, 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
6. Galvanisation is a method of protecting iron from grudging by coating with a thin layer of
(a) Gallium
(b) Aluminium
(c) Zinc
(d) Silver
7. The ability of metals to be drawn into thin wire is known as
(a) Ductility
(b) Malleability
(c) Sonorousity
(d) Conductivity
8. 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
9. Chemically rust is
(a) Hydrated ferrous oxide
(b) Hydrated ferric oxide
(c) only ferric oxide
(d) none of these
10. 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
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iii)
(d) (i) and (iv)
11. Which one of the following four metals would be displaced from the solution of its salts by other three metals?
(a) Mg
(b) Ag
(c) Zn
(d) Cu
12. Which of the given properties is generally not shown by metals?
(a) Electrical conduction
(b) Sonorous in nature
(c) Dullness
(d) Ductility
13. Which of the given can undergo a chemical reaction?
(a) \(MgSO_4 + Fe\)
(b) \(ZnSO_4 + Fe\)
(c) \(MgSO_4 + Pb\)
(d) \(CuSO_4 + Fe\)
14. Metals are extracted from:
(a) compounds
(b) minerals
(c) ores
(d) both minerals and ores.
15. Calcination is:
(a) heating the ore in a limited supply of air
(b) heating the ore in excess of air
(c) cooling the ore
(d) none of these.
16. Setting of Plaster of Paris takes place due to
(a) Solder
(b) Bronze
(c) Brass
(d) Bell metal
17. Heating pyrites to remove sulphur is called
(a) Smelting
(b) Calcination
(c) Liquation
(d) Roasting
18. The second most abundant metal in the earth’s crust is
(a) oxygen
(b) silicon
(c) aluminium
(d) iron
19. A student placed an iron nail in copper sulphate solution. He observed the reddish-brown coating on the iron nail which is
(a) soft and dull
(b) hard and flading
(c) smooth and shining
(d) rough and granular
20. An element A is soft and can be cut with a knife. This is very reactive to air and cannot be kept in open. It reacts vigorously with water. Identify the element from the following:
(a) Mg
(b) Na
(c) P
(d) Ca
21. Alloys are homogeneous mixtures of a metal with a metal or non-metal. Which among the following alloys contain non-metal as one of its constituents?
(a) Brass
(b) Bronze
(c) Amalgam
(d) Steel
22. During smelting, an additional substance is added which combines with impurities to form a fusible product. It is known as
(a) Slag
(b) Mud
(c) Gangue
(d) Flux
23. In extraction of copper, the flux used is
(a) \(CaO\)
(b) \(SiO_2\)
(c) \(FeO\)
(d) \(FeSiO_3\)
24. Metal always found in free state is:
(a) Gold
(b) Silver
(c) Copper
(d) Sodium
25. 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
Answer Key
1. (b) Aluminium
2. (a) Lead
3. (a) Sonorousness
4. (b) they can share electrons with chlorine
5. (a) electrolysis of their molten chloride
6. (c) Zinc
7. (b) Malleability
8. (c) Basic Copper carbonate
9. (b) Hydrated ferric oxide
10. (d) (i) and (iv)
11. (b) Ag
12. (c) Dullness
13. (d) \(CuSO_4 + Fe\)
14. (c) ores
15. (a) heating the ore in a limited supply of air
16. (a) Solder
17. (d) Roasting
18. (d) iron
19. (d) rough and granular
20. (b) Na
21. (d) Steel
22. (d) Flux
23. (b) \(SiO_2\)
24. (a) Gold
25. (b) Has low melting point
Answered by Mayu | 2 years ago
Give reasons why copper is used to making hot water tanks and not steel (an alloy of iron)
A man went door to door posing as a goldsmith. He promised to bring back the glitter of old and dull gold ornaments. An unsuspecting lady gave a set of gold bangles to him which he dipped in a particular solution. The bangles sparkled like new but their weight was reduced drastically. The lady was upset but after a futile argument the man beat a hasty retreat. Can you play the detective to find out the nature of the solution he had used?
Differentiate between metal and non-metal on the basis of their chemical properties
You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice. Explain why these sour substances are effective in cleaning the vessels
Give reasons
(a) Platinum, gold and silver are used to make jewellery.
(b) Sodium, potassium and lithium are stored under oil.
(c) Aluminium is a highly reactive metal, yet it is used to make utensils for cooking.
(d) Carbonate and sulphide ores are usually converted into oxides during the process of extraction.