Metals And Non Metals

Q1: Which of the following metals is present in the anode mud during the electrolytic refining of copper?

• Sodium
• Aluminium
• Gold
• Iron

Q2: Which of the given properties is generally not shown by metals?

• Electrical conduction
• Sonorous in nature
• Dullness
• Ductility

Q3: 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

• calcium
• carbon
• iron
• silicon

Q4: The ability of metals to be drawn into thin wire is known as

• Ductility
• Malleability
• Sonorousity
• Conductivity

Q5: An alloy of Zn and Cu is dissolved in dil. HC1. Hydrogen gas is evolved. In this evolution of gas

• only zinc reacts with dil. HC1
• only copper reacts with dil. HC1
• both zinc and copper react with dil. HC1
• only copper reacts with water

Q6: Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?

• Good thermal conductivity
• Good electrical conductivity
• Ductility
• High melting point

Q7: A greenish coating develops on copper utensils due to formation of

• CuCo3
• Cu(OH)2
• Cu(OH)2.CuCO3
• CuO

Q8: Which one of the given metals does not react with cold as well as hot water?

• Na

Q9: The second most abundant metal in the earth’s crust is

• oxygen
• silicon
• aluminium
• iron

Q10: Which of the given oxide(s) of iron would be obtained on prolonged reaction of iron with steam?

• FeO
• Fe₂O₃
• Fe₃O₄
• Fe₂O₃ and Fe₃O₄

Q11: Rusting of iron takes place in

• ordinary water
• distilled water
• both ordinary and distilled water
• none of the above

Q12: What happens when calcium is treated with water?

• It does not react with water
• It reacts violently with water
• It reacts less violently with water
• Bubbles of hydrogen gas formed stick to the surface of calcium

Q13: The bronze medals are made up of

• Cu and Zn
• Zn and Ni
• Cu and Sn
• Cu, Zn, Tn

Q14: 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)?

• H₂SO₄
• HCl
• HNO₃
• All the these

Q15: The composition of aqua-regia is

• Dil.HCl : Conc. HNO₃ = 3 : 1
• Conc.HCl : Dil. HNO₃ = 3 : 1
• Conc.HCl : Conc. HNO₃ = 3 : 1
• Dil.HCl : Dil. HNO₃ = 3 : 1

Q16: Silver articles becomes black on prolonged exposure to air. This is due to the formation of

• Ag2O
• Ag2S
• AgCN
• Ag2O and Ag2S

Q17: During smelting, an additional substance is added which combines with impurities to form a fusible product known as

• slag
• mud
• gangue
• flux

Q18: A student placed an iron nail in copper sulphate solution. He observed the reddish brown coating on the iron nail which is

• soft and dull
• hard and flading
• smooth and shining
• rough and granular

Q19: Which of the following are not ionic compounds?

• KCl
• HCl
• CCl₄
• NaCl
• (A) & (B)
• (B) & (C)
• (C) & (D)
• (A) & (C)

Q20: Which one of the given properties is not generally exhibited by ionic compounds?

• Solubility in water
• Electrical conductivity in solid state
• High melting and boiling points
• Electrical conductivity in molten state

Q21: Which of the following metals cannot be extracted using smelting?

• Fe
• Al
• Zn
• Pb

Q22: In general, the number of electrons in the outermost shell of a metal atom is

• 1
• 1 to 3
• 5 to 8
• 8

Q23: Aluminum is used for making cooking utensils. Which of the following properties of aluminum are responsible for the same?

• Good thermal conductivity
• Good electrical conductivity
• Ductility
• High melting point

Q24: An aluminium strip is kept immersed in freshly prepared ferrous sulphate solution taken in a test tube, the change observed is that

• Green solution slowly turns brown
• Lower end of test tube become slightly warm
• A colourless gas with the smell of burning sulphur is observed
• Light green solution changes to blue

Q25: 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

• Statement A is correct only
• Statement A is correct only
• Both Statement A and B are correct
• Both Statement A and B are incorrect

Q26: Which among the given alloys contain non-metal as one of its constituents?

• Brass
• Amalgam
• Gunmetal
• None of these

Q27: A student placed an iron nail in copper sulphate solution. He observed the reddish brown coating on the iron nail which is

• Soft and dull
• Hard and flading
• Smooth and shining
• Rough and granular

Q28: Hematite is an ore of

• iron
• aluminum
• copper
• tin

Q29: Metals are refined by using different methods. Which of the following metals are refined by electrolytic refining?

• Au
• Cu
• Na
• K

Q30: A greenish coating develops on copper utensils due to formation of

• CuCO₃
• Cu(OH)₂
• Cu(OH)₂.CuCO₃
• CuO

Q31: 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

• Calcium
• Carbon
• Iron
• Silicon

Q32: Copper objects lose their shine and form green coating of

• Copper oxide
• Copper hydroxide and Copper oxide
• Basic Copper carbonate
• Copper carbonate

Q33: Rock salt is an ore of one of the following metals. This metal is:

• Mn
• Na
• Fe
• Cu

Q34: Amalgam is an alloy of

• Copper and Tin
• Mercury
• Lead and Tin
• Copper and Zinc

Q35: The metal which is always present in an amalgam is:

• iron
• aluminium
• mercury
• magnes

Q36: 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?

• X is a metal
• Y is a metal
• Z is a non-metal
• Y is a non-metal and Z is a metal

Q37: Which of the following alloys contains a non-metal as one of the constituents?

• Brass
• Amalgam
• Steel
• Bronze

Q38: Which of the following pair of metals exist in their native state in nature?

• Ag and Hg
• Ag and Zn
• Au and Hg
• Au and Ag

Q39: 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?

• Has high melting point
• Has low melting point
• Conducts electricity in molten state
• Occurs as solid

Q40: 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

• Mg
• Na
• P
• Ca

Q41: Which of the following is an ore of mercury metal?

• Rock salt
• Cinnabar
• Calamine
• Haematite

Q42: Galvanisation is a method of protecting iron from rudftng by coating with a thin layer of

• Galium
• Aluminium
• Zinc
• Silver

Q43: In stainless steel alloy, iron metal is mixed with:

• Cu and Cr
• Cr and Ni
• Cr and Sn
• Cu and Ni

Q44: The metal which can be extracted from the bauxite ore is:

• Na
• Mn
• Al
• Hg

Q45: 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.

• iron (III) oxide and aluminium powder
• iron (II) oxide and aluminium powder
• iron (III) chloride and aluminium powder
• iron (III) sulphate and aluminium powder

Q46: Oxides of moderately reactive metals like Zinc, Iron, Nickel, Tin, Copper etc. are reduced by using

• Aluminium as reducing agent
• Sodium as reducing agent
• Carbon as reducing agent
• Calcium as reducing agent

Q47: Which of the following is an iron ore?

• Cinnabar
• Calamine
• Haematite
• Rock salt

Q48: The atomic number of an element Y is 17. The number of electrons in its ion Y– will be:

• 17
• 18
• 19
• 20

Q49: The atomic number of an element X is 19. The number of electrons in its ion X+ will be:

• 18
• 19
• 20
• 21

Q50: 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 and D
• B and C
• A and C
• B and D

Q51: 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:

• Mg
• Na
• P
• Ca

Q52: 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?

• Has a high melting point
• Has a low melting point
• Conducts electricity in a molten state
• Occurs as solid

Q53: Which of the following alloys contains a non-metal as one of its constituents?

• Steel
• Brass
• Amalgam
• Bronze

Q54: Galvanisation is a method of protecting steel and iron from rusting by coating them with a thin layer of

• Copper
• Aluminum
• Zinc
• Bauxite

Q55: Metal always found in a free state is

• Gold
• Silver
• Copper
• Sodium

Q56: In the extraction of copper, the flux used is

• CaO
• SiO2
• FeO
• FeSiO3

Q57: During smelting, an additional substance is added which combines with impurities to form a fusible product. It is known as

• Slag
• Mud
• Gangue
• Flux

Q58: 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?

• Brass
• Bronze
• Amalgam
• Steel

Q59: 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:

• Mg
• Na
• P
• Ca