MCQs for Class 10 Science Chapter 3 Metals and Non-Metals

MCQs for Class 10 Science Chapter 3 Metals and Non-Metals: In this article, we have covered all the important MCQs for Free for Class 10 Term 1 2021-22 Board Exams. In accordance with the latest pattern, Padhle is here with MCQ Questions for Class 10.

[adinserter block=”3″]

[twy_show_add_bookmark]

MCQ for Class 10 Science Chapter 3 Metals and Non-Metals

Question 1:
Which of the following metals is present in the anode mud during the electrolytic refining of copper?
(a) Sodium
(b) Aluminium
(c) Gold
(d) Iron

Answer: (d) Iron

Question 2:
Which of the given properties is generally not shown by metals?
(a) Electrical conduction
(b) Sonorous in nature
(c) Dullness
(d) Ductility

Answer: (c) Dullness

Question 3:
An element reacts with oxygen to give a compound with a high melting point. The compound is soluble in water. The element is likely to be
(a) calcium
(b) carbon
(c) iron
(d) silicon

Answer: (c) iron

Question 4:
The ability of metals to be drawn into thin wire is known as
(a) Ductility
(b) Malleability
(c) Sonorousity
(d) Conductivity

Answer: (a) Ductility

Question 5:
An alloy of Zn and Cu is dissolved in dil. HC1. Hydrogen gas is evolved. In this evolution of gas
(a) only zinc reacts with dil. HC1
(b) only copper reacts with dil. HC1
(c) both zinc and copper react with dil. HC1
(d) only copper reacts with water

Answer: (a) only zinc reacts with dil. HC1

Question 6:
Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?
(a) Good thermal conductivity
(b) Good electrical conductivity
(c) Ductility
(d) High melting point
A. (A) & (B)
B. (A) & (C)
C. (B) & (C)
D. (A) & (D)

Answer: (d) (A) & (D)

[adinserter block=”3″]

Question 7:
A greenish coating develops on copper utensils due to formation of
(a) CuCo3
(b) Cu(OH)2
(c) Cu(OH)2.CuCO3
(d) CuO

Answer: (a) CuCo3

Question 8:
Which one of the given metals does not react with cold as well as hot water?
(a) Na
B. Ca
C. Mg
D. Fe

Answer: (c) Mg

Question 9:
The second most abundant metal in the earth’s crust is
(a) oxygen
(b) silicon
(c) aluminium
(d) iron

Answer: (d) iron

Question 10:
Which of the given oxide(s) of iron would be obtained on prolonged reaction of iron with steam?
(a) FeO
(b) Fe₂O₃
(c) Fe₃O₄
(d) Fe₂O₃ and Fe₃O₄

Answer: (c) Fe₃O₄

Question 11:
Rusting of iron takes place in
(a) ordinary water
(b) distilled water
(c) both ordinary and distilled water
(d) none of the above

Answer: (c) both ordinary and distilled water

Question 12:
What happens when calcium is treated with water?
(a) It does not react with water
(b) It reacts violently with water
(c) It reacts less violently with water
(d) Bubbles of hydrogen gas formed stick to the surface of calcium
A. (A) & (D)
B. (B) & (C)
C. (A) & (B)
D. (C) & (D)

Answer: (d) (C) & (D)

[adinserter block=”3″]

Question 13:
The bronze medals are made up of
(a) Cu and Zn
(b) Zn and Ni
(c) Cu and Sn
(d) Cu, Zn, Tn

Answer: (d) (C) & (D)

Question 14:
Generally metals react with acids to give salt and hydrogen gas. Which of the given acids does not give hydrogen gas on reacting with metals (except Mn and Mg)?
(a) H₂SO₄
(b) HCl
(c) HNO₃
(d) All the these

Answer: (c)HNO₃

Question 15:
The composition of aqua-regia is
(a) Dil.HCl : Conc. HNO₃ = 3 : 1
(b) Conc.HCl : Dil. HNO₃ = 3 : 1
(c) Conc.HCl : Conc. HNO₃ = 3 : 1
(d) Dil.HCl : Dil. HNO₃ = 3 : 1

Answer: (a)Dil.HCl : Conc. HNO₃ = 3 : 1

Question 16:
Silver articles becomes black on prolonged exposure to air. This is due to the formation of
(a) Ag2O
(b) Ag2S
(c) AgCN
(d) Ag2O and Ag2S

Answer: (b)Ag2S

Question 17:
During smelting, an additional substance is added which combines with impurities to form a fusible product known as
(a) slag
(b) mud
(c) gangue
(d) flux

Answer: (a)slag

Question 18:
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

Answer: (d)rough and granular

[adinserter block=”3″]

Question 19:
Which of the following are not ionic compounds?
(a) KCl
(b) HCl
(c) CCl₄
(d) NaCl
(a) (A) & (B)
(b) (B) & (C)
(c) (C) & (D)
(d) (A) & (C)

Answer: (b) (B) & (C)

Question 20:
Which one of the given properties is not generally exhibited by ionic compounds?
(a) Solubility in water
(b) Electrical conductivity in solid state
(c) High melting and boiling points
(d) Electrical conductivity in molten state

Answer: (b) Electrical conductivity in solid state

Question 21:
Which of the following metals cannot be extracted using smelting?
(a) Fe
(b) Al
(c)Zn
(d) Pb

Answer: (b) Al

Question 22:
In general, the number of electrons in the outermost shell of a metal atom is
(a) 1
(b) 1 to 3
(c) 5 to 8
(d) 8

Answer: (b) 1 to 3

Question 23:
Aluminum is used for making cooking utensils. Which of the following properties of aluminum are responsible for the same?
(a) Good thermal conductivity
(b) Good electrical conductivity
(c) Ductility
(d) High melting point
A. (A) & (B)
B. (A) & (C)
C. (B) & (C)
D. (A) & (D)

Answer: (d) (A) & (D)

Question 24:
An aluminium strip is kept immersed in freshly prepared ferrous sulphate solution taken in a test tube, the change observed is that
(a) Green solution slowly turns brown
(b) Lower end of test tube become slightly warm
(c) A colourless gas with the smell of burning sulphur is observed
(d) Light green solution changes to blue

Answer: (a) Green solution slowly turns brown

[adinserter block=”3″]

Question 25:
Two Statement are made
Statement A: Zinc is used in the galvanization of iron
Statement B: Its coating on Iron articles increasing the life of it by protecting it from rusting
(a)Statement A is correct only
(b) Statement A is correct only
(c) Both Statement A and B are correct
(d) Both Statement A and B are incorrect

Answer: (c) Both Statement A and B are correct

Question 26:
Which among the given alloys contain non-metal as one of its constituents?
(a) Brass
(b) Amalgam
(c) Gunmetal
(d) None of these

Answer: (b) Amalgam

Question 27:
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

Answer: (d) Rough and granular

Question 28:
Hematite is an ore of
(a) iron
(b) aluminum
(c) copper
(d) tin

Answer: (a) iron

Question 29:
Metals are refined by using different methods. Which of the following metals are refined by electrolytic refining?
(a) Au
(b) Cu
(c) Na
(d) K

Answer: (c) Na and (d) K

Question 30:
A greenish coating develops on copper utensils due to formation of
(a) CuCO₃
(b) Cu(OH)₂
(c) Cu(OH)₂.CuCO₃
(d) CuO

Answer: (a) CuCO₃

[adinserter block=”3″]

Question 31:
An element reacts with oxygen to give a compound with a high melting point. The compound is soluble in water. The element is likely to be
(a) Calcium
(b) Carbon
(c) Iron
(d) Silicon

Answer: (c) Iron

Question 32:
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

Answer: (c) Basic Copper carbonate

Question 33:
Rock salt is an ore of one of the following metals. This metal is:
(a) Mn
(b) Na
(c) Fe
(d) Cu

Answer: (b) Na

Question 34:
Amalgam is an alloy of
(a) Copper and Tin
(b) Mercury
(c) Lead and Tin
(d) Copper and Zinc

Answer: (b) Mercury

Question 35:
The metal which is always present in an amalgam is:
(a) iron
(b) aluminium
(c) mercury
(d) magnes

Answer: (c) Mercury

Question 36:
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

Answer: (c) Z is a non-metal

[adinserter block=”3″]

Question 37:
Which of the following alloys contains a non-metal as one of the constituents?
(a) Brass
(b) Amalgam
(c) Steel
(d) Bronze

Answer: (c) Steel

Question 38:
Which of the following pair of metals exist in their native state in nature?
(a) Ag and Hg
(b) Ag and Zn
(c) Au and Hg
(d) Au and Ag

Answer: (d) Au and Ag

Question 39:
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: (c) Conducts electricity in molten state

Question 40:
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) Na

Question 41:
Which of the following is an ore of mercury metal?
(a) Rock salt
(b) Cinnabar
(c) Calamine
(d) Haematite

Answer: (b) Cinnabar

Question 42:
Galvanisation is a method of protecting iron from rudftng by coating with a thin layer of
(a) Galium
(b) Aluminium
(c) Zinc
(d) Silver

Answer: (c) Zinc

[adinserter block=”3″]

Question 43:
In stainless steel alloy, iron metal is mixed with:
(a) Cu and Cr
(b) Cr and Ni
(c) Cr and Sn
(d) Cu and Ni

Answer: (b) Cr and Ni

Question 44:
The metal which can be extracted from the bauxite ore is:
(a) Na
(b) Mn
(c) Al
(d) Hg

Answer: (c) Al

Question 45:
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

Answer: (a) iron (III) oxide and aluminium powder

Question 46:
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

Answer: (c) Carbon as reducing agent

Question 47:
Which of the following is an iron ore?
(a) Cinnabar
(b) Calamine
(c) Haematite
(d) Rock salt

Answer: (c) Haematite

Question 48:
The atomic number of an element Y is 17. The number of electrons in its ion Y^– will be:
(a) 17
(b) 18
(c) 19
(d) 20

Answer: (b) 18

[adinserter block=”3″]

Question 49:
The atomic number of an element X is 19. The number of electrons in its ion X⁺ will be:
(a) 18
(b) 19
(c) 20
(d) 21

Answer: (a) 18

Question 50:
The atomic numbers of four elements A, B, C and D are 6, 8, 10 and 12 respectively. The two elements which can react to form ionic bonds (or ionic compounds) are:
(a) A and D
(b) B and C
(c) A and C
(d) B and D

Answer: (d) B and D

Question 51:
An element X is soft and can be cut with the help of a knife. It is very reactive to air and cannot be kept open in the air. It reacts vigorously with water. Identify the element from the following:
(a) Mg
(b) Na
(c) P
(d) Ca

Answer: (b) Na

Question 52:
The reaction between X and Y forms compound Z. X loses electrons and Y gains electrons. Which of the following properties is not shown by Z?
(a) Has a high melting point
(b) Has a low melting point
(c) Conducts electricity in a molten state
(d) Occurs as solid

Answer: (b) Has a low melting point

Question 53:
Which of the following alloys contains a non-metal as one of its constituents?
(a) Steel
(b) Brass
(c) Amalgam
(d) Bronze

Answer: (a) Steel

Question 54:
Galvanisation is a method of protecting steel and iron from rusting by coating them with a thin layer of
(a) Copper
(b) Aluminum
(c) Zinc
(d) Bauxite

Answer: (c) Zinc

[adinserter block=”3″]

Question 55:
Metal always found in a free state is
(a) Gold
(b) Silver
(c) Copper
(d) Sodium

Answer: (a) Gold

Question 56:
In the extraction of copper, the flux used is
(a) CaO
(b) SiO2
(c) FeO
(d) FeSiO3

Answer: (b) SiO2

Question 57:
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

Answer: (d) Flux

Question 58:
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

Answer: (d) Steel

[adinserter block=”3″]

Question 60:
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

Answer: (b) Na