Metal and Non Metals Class 10 MCQ with Solutions
1. The most abundant metal in the earth crust is:
(A) Al
(B) Fe
(C) Ca
(D) Cu
Ans. (A)
Sol. Al is most abundant metal on earth crust.
2. Which of the following statement is true :
(A) All ores are minerals
(B) All minerals can be ores
(C) A mineral cannot be an ore
(D) An ore cannot be a mineral
Ans. (A)
Sol. All ore are mineral but all minerals are not ore.
3. Which of the following is not a strategic metal:
(A) Titanium
(B) Chromium
(C) Zirconium
(D) Platinum
Ans. (D)
Sol. Those metal which are responsible for country is defiance and economy they are called strategic metal.
4. Alloy is an example of :
(A) Colloidal solution
(B) Solid solution
(C) Emulsion
(D) Gel
Ans. (B)
Sol. Alloy is a homogeneous solid solution
5. Highly malleable metal among the following is :
(A) Sodium
(B) Potassium
(C) Silver
(D) Calcium
Ans. (C)
Sol. Silver is most malleable metal.
6. Metal which can cut with a knife :
(A) Copper
(B) Sodium
(C) Iron
(D) Aluminium
Ans. (B)
Sol. Sodium is a soft metal and can be cut with knife.
7. Which is the worst conductor of heat :
(A) Copper
(B) Lead
(C) Silver
(D) Aluminium
Ans. (B)
Sol. Lead is poorest conductor.
8. Best conductor of heat is :
(A) Tin
(B) Silver
(C) Aluminium
(D) Chromium
Ans. (B)
Sol. Silver is best conductor.
9. Property by which metal can be drawn into thin wires is :
(A) Malleability
(B) Ductility
(C) Sonority
(D) Lustre
Ans. (B)
Sol. Ductility
10. Most ductile metals is/are :
(A) Gold
(B) Silver
(C) Both A and B
(D) Iron
Ans. (C)
Sol. Gold and silver are most ductile metal.
11. Non metals generally contain ………… electrons in their outer most shell :
(A) 1, 2 or 3
(B) 5, 6 , 7or 8
(C) 10 to 18
(D) 8, 9 or 10
Ans. (B)
Sol. Non metals generally contain 5, 6, 7 or 8 electron.
12. In gaseous state which metal is most reactive:
(A) Li
(B) K
(C) Na
(D) Cs
Ans. (D)
Sol. In Gaseous state Cs is most reactive metal.
13. Electric conductivity of metals ___________with the increase of temperature :
(A) Increases
(B) Decreases
(C) Remains the same
(D) Depends upon pressure conditions also
Ans. (B)
Sol. Electric conductivity of metals decrease with increase of temperature.
14. Which of the following does not act both as metals and nonmetals :
(A) Arsenic
(B) Bismuth
(C) Boron
(D) Germanium
Ans. (B)
Sol. Bismuth shows metallic property only.
15. Molten sodium chloride conducts electricity due to the presence of :
(A) Free electrons
(B) Free molecules
(C) Free ions
(D) Atoms of sodium and chlorine
Ans. (C)
Sol. Due to presence of free ion molten sodium chloride conducts electricity.
16. Which of the following known as Bengal nitre :
(A) KNO3
(B) NaNO3
(C) CuSO4
(D) BaSO4
Ans. (A)
Sol. KNO3 known as Bengal nitre.
17. Which of the following element is used in making microchips ?
(A) Nickel
(B) Silicon
(C) Gallium
(D) Silver
Ans. (B)
Sol. Silicon element is used in making microchips
18. Which of the following alloy is light and strong ?
(A) Brass
(B) Stainless steel
(C) Duralium
(D) Bronze
Ans. (A)
Sol. Brass is light and strong alloy.
19. Which of the following is non metallic :
(A) Brass
(B) Tungsten
(C) Chlorine
(D) Chromium
Ans. (C)
Sol. Chlorine is non metallic.
20. What is the correct order of the abundance of non-metal in earth’s crust :
(A) Oxygen > Silicon > Sodium > Iron
(B) Oxygen > Silicon > Phosphorus > Sulphur
(C) Sulphur > Phosphorus > Silicon > Oxygen
(D) Iron > Aluminium > Silver > Gold
Ans. (B)
Sol. Correct order of the abundance of non-metal in earth’s crust is Oxygen > Silicon > Phosphorus > Sulphur.
21. When Copper (II) oxide is added to dil hydrochloric acid :
(A) Cupric chlorate is formed and hydrogen gas is evolved
(B) Cuprous chloride and water are formed
(C) Cupric chloride and water are formed
(D) No chemical reaction takes place
Ans. (C)
Sol. CuO + 2HCl → CuCl2 + H2O
22. When ferric chloride reacts with aq. NaOH, a ………………………………… coloured ppt is formed with NaCl, whose chemical formula is :………………………………….
(A) Brown, Fe(OH)2
(B) Green, Fe(OH)2
(C) Green, Fe(OH)3
(D) Brown, Fe(OH)3
Ans. (D)
Sol. 2 FeCl3 + 6NaOH →2Fe(OH)3 + 6NaCl
(Brown)
23. Aluminium reacts with _______ to form aluminium oxide and hydrogen gas :
(A) Cold water
(B) Hot water
(C) Steam
(D) Oxygen
Ans. (C)
Sol. 
24. Complete the reaction Zn + 2NaOH → :
(A) Zn(OH)2 + H2
(B) Na2ZnO2 + H2
(C) Zn(OH)2 + Na2
(D) Na2ZnO2 + Na2O
Ans. (B)
Sol. Zn + 2NaOH → Na2ZnO2 + H2
25. Magnesium metal react with steam and forms :
(A) Mg(OH)2
(B) MgO
(C) Mg(OH)2 and H2
(D) MgO and H2
Ans. (D)
Sol. Mg + H2O → MgO + H2
(Steam)
26. The most appropriate method of testing the odour of evolving gas is :”
(A) I
(B) II
(C) III
(D) IV
Ans. (B)
Sol. Glass tube does not dipped in solution.
27. Most reactive metal among the following is :
(A) Na
(B) Mg
(C) Al
(D) Fe
Ans. (A)
Sol. According to reactivity series : Na > Mg > Al > Fe
28. On adding a pinch of sodium bicarbonate to acetic acid, we observe the following changes.
The change is correctly represented by :
(A) I
(B) II
(C) III
(D) IV
Ans. (A)
Sol. NaHCO3 + CH3COOH → CH3 COONa + H2O + CO2 (strong effervescence)
29. Aqua regia is a 1 : 3 mixture of :
(A) dil. HCl and dil. HNO3
(B) conc. H2SO4 and conc.HNO3
(C) conc. HNO3 and conc. HCl
(D) conc. HCl and conc. H2SO4
Ans. (C)
Sol. Aqua regia = 1 part conc. HNO3 + 3 part HCl
30. When zinc reacts with dilute hydrochloric acid then :
(A) Surface of zinc becomes brighter
(B) The surface of zinc becomes black and dull
(C) The metal turns in to powder
(D) The reaction mixture turns green
Ans. (A)
Sol. Zn + dil. 2HCl → ZnCl2 + H2; zinc surface become brighter due to formation of ZnCl2.
31. Which of the following elements give hydrogen with very dilute nitric acid :
(A) Zn and Mg
(B) Mn and Sn
(C) Mg and Mn
(D) Mn and K
Ans. (C)
Sol. Mg and Mn give hydrogen with very dilute nitric acid.
32. The metal which react with hydrogen to form hydrides is :
(A) Hg
(B) Cu
(C) Ag
(D) Ca
Ans. (D)
Sol. Ca + H2 → CaH2 (alkaline hydride).
33. Metal which does not react with dil. HCl is :
(A) Ag
(B) Mg
(C) Al
(D) Fe
Ans. (A)
Sol. ‘Ag’ get lower position from hydrogen in reactivity series.
34. The oxide of non metal which is neutral is :
(A) SO2
(B) NO2
(C) P2O5
(D) CO
Ans. (D)
Sol. CO is a neutral oxide.
35. Phosphorus combine with oxygen to form ………… types of oxide.
(A) One
(B) Two
(C) Three
(D) Four
Ans. (B)
Sol. Phosphorus form two oxides P2O3 and P2O5.
36. The gas evolved and the soluble substance formed when aluminium is dissolved in an alkali are respectively :
(A) H2 and Al
(B) H2 and Al2O3
(C) H2 and NaAlO2
(D) H2 and Na2AlO3
Ans. (C)
Sol. 2NaOH + 2Al → 2NaAlO2 + H2
37. The nature of non-metallic oxides can be :
(A) Basic
(B) Acidic
(C) Neutral
(D) Both (B) & (C)
Ans. (D)
Sol. Generally the nature of non-metallic oxides is acidic & neutral (e.g. H2O)
38. An element ‘X’ form an oxide XO2, which is a very useful gas used in photosynthesis process. The element is :
(A) Sulphur
(B) Nitrogen
(C) Carbon
(D) Phosphorus
Ans. (C)
Sol. Element is carbon C + O2 → CO2
39. The acid formed when sulphur trioxide reacts with water is :
(A) Sulphurous acid
(B) Sulphuric acid
(C) Both (A) & (B)
(D) None of these
Ans. (B)
Sol. SO3 + H2O → H2SO4 (sulphuric acid)
40. The metal which do not liberate hydrogen gas after reacting with acids is :
(A) Zinc
(B) Lead
(C) Tin
(D) Gold
Ans. (D)
Sol. ‘Au’ get lower position from hydrogen in reactivity series.
41. Which of the following bonds will have directional character?
(A) ionic bond
(B) Metallic bond
(C) Covalent bond
(D) Both covalent and metallic bonds
Ans. (C)
Sol. Covalent bond has directional character because it forms by over lapping of orbital.
42. The compound which contains both ionic and covalent bonds is :
(A) CH4
(B) H2
(C) KCN
(D) KCl
Ans. (C)
Sol. Ionic bond form between metal and non-metal while covalent bond form between non-metal & non-metal
K⊕ CÈ ≡ N.
43. The necessary condition (s) for the formation of ionic bond is/are :
(A) Low ionisation energy of electropositive element
(B) High electron affinity of electronegative element
(C) Both (A) and (B)
(D) None of these
Ans. (C)
Sol. Low ionisation energy and high electron affinity is necessary for formation of ionic bond.
44. Ionic bond is formed by :
(A) Loss of electrons only
(B) Gain of electrons only
(C) Both loss and gain of electrons
(D) Sharing of electrons
Ans. (C)
Sol. Loss of electron and gain of electron form ionic bond.
45. Ionic bond is formed between :
(A) Two electropositive elements
(B) Two electronegative elements
(C) Electropositive and electronegative elements
(D) None of these
Ans. (C)
Sol. Ionic bond is formed between electropositive metal and electronegative non metal.
46. During formation of ionic bond :
(A) There is force of repulsion between two negative ions
(B) There is force of repulsion between two positive ions
(C) There is a force of attraction between positive and negative ions
(D) None of these
Ans. (C)
Sol. During formation of ionic bond there is a force of attraction between positive and negative ions present.
47. Ionic compounds have :
(A) Low melting and high melting points
(B) High melting and low boiling
(C) Low melting and low boiling points
(D) High melting and high boiling points
Ans. (D)
Sol. Ionic compounds have high m.p. and high b.p.
48. Ionic compounds conduct electricity in :
(A) Solid state
(B) Fused state
(C) Gaseous state
(D) Do not conduct electricity at all
Ans. (B)
Sol. Ionic compounds conduct electricity is fused state
49. The electronic configurations of four elements
L : 1s22s22p4 ;
Q : 1s22s22p63s23p5
P : 1s22s22p63s1
R : 1s22s22p63s2
The formulae of ionic compounds that could be formed between them are :
(A) L2P, RL, PQ, R2Q
(B) P2L, RL, PQ, RQ2
(C) LP, RL, PQ, RQ
(D) LP, R2L, P2O, RQ
Ans. (B)
Sol. P2L, RL, PQ, RQ2 form between ionic reaction of ions.
50. In the formation of a compound A2B3, two atoms of A lose three electrons each while three atoms of B gain two electrons each. Which of the following statements is incorrect regarding the compound A2B3 ?
(A) A2B3 will be insoluble in organic solvents but soluble in water
(B) High temperatures are to be supplied to cause melting and boiling of A2B3
(C) A2B3 will have an ordered arrangement of its costituent species
(D) A2B3 will conduct electricity in solid state, molten state as well as in aqueous solution.
Ans. (D)
Sol. Ionic compound shows conductivity in fused state.