Metallurgy
1. Which of the following combinations represent a metal and a non – metal
respectively?
(a) lead and mercury (b) carbon and oxygen
(c) hydrogen and nickel (d) nickel and sulphur
2. A metal which occurs native is _________
(a) nickel (b) sodium
(c) gold (d) mercury
3. Metals which are more reactive occur in nature as _____________
(a) native (b) oxides
(c) sulphides (d) both (b) and (c)
4. Copper occurs in nature as its
(a) oxide (b) chloride
(c) sulphide (d) bromide
5. Generally metals have high density. An exception is _______
(a) Cu (b) Ag
(c) K (d) Hg
6. A metal which is not a good conductor of heat and electricity is
(a) Hg (b) Cu
(c) Bi (d) Ag
7. An allotrope of non metal which is a good conductor of heat and electricity
(a) diamond (b) graphite
(c) greytin (d) plastic sulphur
8. Metals are generally lustrous. As example of a non metal which is lustrous is
______
(a) Carbon (b) Gold
(c) Iodine (d) Mercury
, 9. Which of the following statements is not correct with respect to a non metal?
(a) they are non ductile (b) they have low tensite strength
(c) they are sonorous (d) they are non lustrous
10. Which property of a metal and non metal is wrongly matched?
S.NO. Property Metal Non metal
1. Malleability Malleable Non malleable
2. Hardness Generally hard Generally soft
3. Conductivity Poor conductors Good conductors
4. Melting point High Low
(a) 1 (b) 2
(c) 3 (d) 4
11. Pick out the wrong statement
(a) oxides of metal are basic (b) oxides of non metal are acidic
(c) metals are good oxidising agents (d) non metals are good oxidising
agents
12. Which one of the following chlorides is not hydrolysed?
(a) AlCl3 (b) NaCl
(c) PCl3 (d) SiCl4
13. Non volatile stable hydrides are formed by _____________
(a) nitrogen and phosphorus (b) sodium and calcium
(c) tin and lead (d) hydrogen and phosphorus
14. Metals are hard because ______________
(a) they occur in nature in the combined state
(b) they are electropositive
(c) the force of attraction between the atoms is strong
(d) the force of attraction between the nucleus and the valence electron is
weak.
15. A metal which has relatively low density is
(a) gold (b) mercury
(c) lithium (d) iron
16. A metal, which does not react with water and produce hydrogen is
(a) Na (b) Mg
(c) Fe (d) Au
1. Which of the following combinations represent a metal and a non – metal
respectively?
(a) lead and mercury (b) carbon and oxygen
(c) hydrogen and nickel (d) nickel and sulphur
2. A metal which occurs native is _________
(a) nickel (b) sodium
(c) gold (d) mercury
3. Metals which are more reactive occur in nature as _____________
(a) native (b) oxides
(c) sulphides (d) both (b) and (c)
4. Copper occurs in nature as its
(a) oxide (b) chloride
(c) sulphide (d) bromide
5. Generally metals have high density. An exception is _______
(a) Cu (b) Ag
(c) K (d) Hg
6. A metal which is not a good conductor of heat and electricity is
(a) Hg (b) Cu
(c) Bi (d) Ag
7. An allotrope of non metal which is a good conductor of heat and electricity
(a) diamond (b) graphite
(c) greytin (d) plastic sulphur
8. Metals are generally lustrous. As example of a non metal which is lustrous is
______
(a) Carbon (b) Gold
(c) Iodine (d) Mercury
, 9. Which of the following statements is not correct with respect to a non metal?
(a) they are non ductile (b) they have low tensite strength
(c) they are sonorous (d) they are non lustrous
10. Which property of a metal and non metal is wrongly matched?
S.NO. Property Metal Non metal
1. Malleability Malleable Non malleable
2. Hardness Generally hard Generally soft
3. Conductivity Poor conductors Good conductors
4. Melting point High Low
(a) 1 (b) 2
(c) 3 (d) 4
11. Pick out the wrong statement
(a) oxides of metal are basic (b) oxides of non metal are acidic
(c) metals are good oxidising agents (d) non metals are good oxidising
agents
12. Which one of the following chlorides is not hydrolysed?
(a) AlCl3 (b) NaCl
(c) PCl3 (d) SiCl4
13. Non volatile stable hydrides are formed by _____________
(a) nitrogen and phosphorus (b) sodium and calcium
(c) tin and lead (d) hydrogen and phosphorus
14. Metals are hard because ______________
(a) they occur in nature in the combined state
(b) they are electropositive
(c) the force of attraction between the atoms is strong
(d) the force of attraction between the nucleus and the valence electron is
weak.
15. A metal which has relatively low density is
(a) gold (b) mercury
(c) lithium (d) iron
16. A metal, which does not react with water and produce hydrogen is
(a) Na (b) Mg
(c) Fe (d) Au
