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Chapter 3 Metals and Non-Metals Science Worksheet for Class 10
Class 10 Science students should refer to the following printable worksheet in Pdf in Class 10. This test paper with questions and solutions for Class 10 Science will be very useful for tests and exams and help you to score better marks
Class 10 Science Chapter 3 Metals and Non-Metals Worksheet Pdf
Question. 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: B
Question. The most abundant metal in the earth’s crust is
(a) Iron
(b) Aluminium
(c) Calcium
(d) Sodium
Answer: B
Question. The poorest conductor of heat among metals is
(a) Lead
(b) Mercury
(c) Calcium
(d) Sodium
Answer: A
Question. 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
Answer: B
Question. Al2O3 + 2NaOH → …… + H2O
(a) Al(OH)3
(b) Na2O
(c) NaAlO2
(d) AlNaO2
Answer: C
Question. Which of the following is the correct arrangement 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
Answer: D
Question. 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)
Answer: D
Question. 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?
(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
Answer: D
Question. 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
Answer: A
Question. 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) ZY
(c) XZ3
(d) Y2Z
Answer: B
Question. Which of the following non-metal is lustrous?
(a) Sulphur
(b) Oxygen
(c) Nitrogen
(d) Iodine
Answer: D
Question. The atomic number of an element ‘X’ is 12. Which inert gas is nearest to X?
(a) He
(b) Ar
(c) Ne
(d) Kr
Answer: C
Question. 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
Answer: B
Question. Which of the 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)
Answer: B
Question. Which one among the following is an acidic oxide?
(a) Na2O
(b) CO
(c) CO2
(d) Al2O3
Answer: C
Question. 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
Answer: C
Question. Composition of aqua-regia by volume is :
(a) Dil HCl (3) : Cone HNO3 (1)
(b) Cone HCl (3) : Dil HNO3 (1)
(c) Cone HCl (3) : Cone HNO3 (1)
(d) Dil HC1 (3) : Dil HNO3
Answer: C
Question. 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
Answer: B
Question. Galvanisation is a method of protecting iron from rusting by coating with a thin layer of
(a) Gallium
(b) Aluminium
(c) Zinc
(d) Silver
Answer: C
Question. Example of an amphoteric oxide is:
(a) Na2O
(b) K2O
(c) Al2O3
(d) MgO
Answer: C
CASE STUDY BASED QUESTIONS:
1. Read the following and answer the questions :
On the basis of reactivity of different metals with oxygen, water and acids as well as displacement reactions, the metals have been arranged in the decreasing order of their reactivities. This arrangement is known as activity series or reactivity series of metals.
The basis of reactivity is the tendency of metals to lose electrons. If a metal can lose electrons easily to form positive ions, it will react readily with other substances. Therefore, it will be a reactive metal. On the other hand, if a meal loses electrons less rapidly to form a positive ion, it will react slowly with other substances. Therefore, such a metal will be less reactive.
Question. Which of the following represents the correct order of reactivity for the given metals?
(a) Na > Mg > Al > Cu
(b) Mg > Na > Al > Cu
(c) Na > Mg > Cu > Al
(d) Mg > Al > Na > Cu
Answer: A
Question. Which of the following metals is less reactive than hydrogen?
(a) Copper
(b) Zinc
(c) Magnesium
(d) Lead
Answer: A
Question. Which of the following elements is not present in stainless steel?
(a) Iron
(b) Chromium
(c) Tungsten
(d) Nickel
Answer: C
Question. Hydrogen gas is not evolved when a metal reacts with nitric acid. It is because HNO3, is a strong oxidising agent. It oxidises the H, produced to water and itself gets reduced to any of the nitrogen oxides (N2O, NO, NO2). But _____________ and _____________ react with very dilute HNO3 to evolve H2 gas.
(a) Pb, Cu
(b) Na, K
(C) Mg, Mn
(d) Al, Zn
Answer: C
Question. Which of the following metals reacts vigorously with oxygen?
(a) Zinc
(b) Magnesium
(c) Sodium
(d) Copper
Answer: C
2. Read the following and answer the questions :
Metals as we know, are very useful in all fields, industries in particular. Non-metals are no less in any way. Oxygen present in air is essential for breathing as well as for combustion. Non-metals form a large number of compounds which are extremely useful, e.g., ammonia, nitric acid, sulphuric acid, etc.
Non-metals are found to exist in three states of matter. Only solid non-metals are expected to be hard however, they have low density and are brittle. They usually have low melting and boiling points and are poor conductors of electricity.
Question. Which of the following non-metals is a liquid?
(a) Carbon
(b) Bromine
(c) Iodine
(d) Sulphur
Answer: B
Question. Generally, non-metals are bad conductors of electricity but 'X'which is a form of carbon is a good conductor of electricity and is an exceptional non-metal. 'X'is
(a) diamond
(b) graphite
(c) coal
(d) coke
Answer: B
Question. ____________ is a non-metal but is lustrous
(a) Phosphorus
(b) Sulphur
(c) Bromine
(d) Iodine
Answer: D
Question. Hydrogen is used
(a) for the synthesis of ammonia
(b) for the synthesis of methyl alcohol
(c) in welding torches
(d) all of these
Answer: D
Question. Which of the following is known as 'King of chemicals'?
(a) Urea
(b) Ammonia
(c) Sulphuric acid
(d) Nitric acid
Answer: C
Question. When a strip of zinc metal is put in copper sulphate solution, the blue colour of copper sulphate fades gradually. Why?
Answer : When a strip of zinc metal is placed in copper sulphate solution, zinc being more reactive displaces copper from copper sulphate solution and thus colourless solution of zinc sulphate is formed. Due to formation of this colourless zinc sulphate solution, blue colour of copper sulphate fades gradually.
Question. On placing a piece of aluminium metal in the solution of mercuric chloride, it acquires a shining silvery surface but when it is placed in a solution of magnesium sulphate, no change is observed. Explain.
Answer : Aluminium is more reactive than mercury. Because of this it displaces mercury from mercuric chloride solution. This mercury deposits on the aluminium metal giving its surface silvery shining appearance. Aluminium is less reactive than magnesium. Hence, aluminium cannot displace magnesium from magnesium sulphate solution and so, no change is observed.
Question. Why does zinc react with sulphuric acid to give hydrogen gas but copper does not?
Answer : Zinc is more reactive than hydrogen. Hence, it can react with sulphuric acid to give hydrogen gas.
H2SO4 + Zn ⎯⎯⎯→ ZnSO4 + H2
Sulphuric acid Zinc Zinc sulphate Hydrogen
Copper is less reactive than hydrogen. Hence it cannot displace hydrogen from sulphuric acid.
H2SO4 + Cu ⎯⎯⎯→ No reaction
Question. Which of the faollowing pairs will give displacement reaction?
(i) FeSO4 and copper metal
(ii) FeSO4 and aluminium metal
Answer : (i) Copper metal is less reactive than iron metal, so no displacement reaction will occur between FeSO4 solution and copper metal.
(ii) Aluminium metal is more reactive than iron metal, so displacement reaction will occur between FeSO4 and aluminium metal.
Question. What would you observe when you put some aluminium pieces in copper sulphate solution?
Answer : Copper sulphate solution is blue in colour. When we put some aluminium pieces in copper sulphate solution, blue colour disappears and solution becomes colourless. As well as reddish brown deposits are seen on aluminium pieces. These changes are observed because of the following reaction.
2Al + CuSO4 ⎯⎯⎯→ 3Cu + Al2(SO4)3
White Blue Reddish brown Colourless
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CBSE Class 10 Science Chapter 3 Metals and Non-Metals Worksheet
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