Science Quiz-2 Metal and non-metal

Sceince Quiz -2

Quiz

 

1. The ability of metals to be drawn into thin wire is known as
   
   1.   Ductility
   2.   Malleability
   3.   Sonorousity
   4.   Conductivity
2. Which of the given properties is generally not shown by metals?
   
   1.   A. Electrical conduction
   2.   Sonorous in nature
   3.   Dullness
   4.   Ductility
3. 3. 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
   1.   (A) & (B)
   2.   (A) & (C)
   3.   (B) & (C)
   4.   (A) & (D)
4. 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
   
   1.   (A) & (D)
   2.   (B) & (C)
   3.   (A) & (B)
   4.   (C) & (D)
5. 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)?
   
   1.   H₂SO₄
   2.   HCl
   3.   HNO₃
   4.   All the these
6. The composition of aqua-regia is
   
   1.   Dil.HCl : Conc. HNO₃ = 3 : 1
   2.   Conc.HCl : Dil. HNO₃ = 3 : 1
   3.   Conc.HCl : Conc. HNO₃ = 3 : 1
   4.   Dil.HCl : Dil. HNO₃ = 3 : 1
7. Which one of the given properties is not generally exhibited by ionic compounds?
   
   1.   Solubility in water
   2.   Electrical conductivity in solid state
   3.   High melting and boiling points
   4.   Electrical conductivity in molten state
8. Which of the following metals exists in its native state in nature?
   (a) Cu
   (b) Au
   (c) Zn
   (d) Ag
   1.   (A) & (B)
   2.   (B) & (C)
   3.   (B) & (D)
   4.   (C) & (D)
9. Silver articles become black on prolonged exposure to air. This is due to the formation of
   A. Ag₃N
   B. Ag₂O
   C. Ag₂S
   D. Ag₂S and Ag₃N
   
   Silver articles become black on prolonged exposure to air. This is due to the formation of
   
   1.   Ag₃N
   2.   Ag₂O
   3.   Ag₂S
   4.   Ag₂S and Ag₃N
10. Galvanisation is a method of protecting iron from rusting by coating with a thin layer of
    
    1.   A. Gallium
    2.   Aluminium
    3.   Zinc
    4.   Silver
11. If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of
    
    1.   CuCO₃
    2.   Cu(OH)₂.CuCO₃
    3.   CuO
    4.   Cu(OH)₂
12. Generally, non-metals are not lustrous. Which of the given nonmetals is lustrous?
    
    1.   Sulphur
    2.   Oxygen
    3.   Nitrogen
    4.   Iodine
13. Which one of the given four metals would be displaced from the solution of its salts by other three metals?
    1.   Mg
    2.   Ag
    3.   Zn
    4.   Cu
14. An element A 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
    1.   Mg
    2.   Na
    3.   P
    4.   Ca
15. Which among the given statements is incorrect for magnesium metal?
    
    1.   It burns in oxygen with a dazzling white flame
    2.   It reacts with cold water to form magnesium oxide and evolves hydrogen gas
    3.   It reacts with hot water to form magnesium hydroxide and evolves hydrogen gas
    4.   It reacts with steam to form magnesium hydroxide and evolves hydrogen gas
16. 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
    1.   (A) & (B)
    2.   (A) & (C)
    3.   (B) & (C)
    4.   (A) & (D)
17. An aluminium strip is kept immersed in freshly prepared ferrous sulphate solution taken in a test tube, the change observed is that
    1.   Green solution slowly turns brown further colourless
    2.   Lower end of test tube become slightly warm
    3.   A colourless gas with the smell of burning sulphur is observed
    4.   Light green solution changes to blue
18. Rusting of iron takes place in
    1.   Ordinary water
    2.   Distilled water
    3.   Both ordinary & Distilled water
    4.   None of these
19. An alloy of Zn and Cu is dissolved in dil. HCl. Hydrogen gas is evolved. In this evolution of gas
    1.   Only zinc reacts with dil. HCl
    2.   Only copper reacts with dil. HCl
    3.   Both zinc and copper react with dil. HCl
    4.   Only copper reacts with water
20. If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of
    1.   CuSO₄
    2.   CuCO₃
    3.   Cu(NO₃)₂
    4.   CuO
21. 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 given is correct?
    1.   X is a metal
       .
    2.   Y is a metal
    3.   Z is a non-metal
    4.   Y is a non-metal & Z is a metal
22. Reaction between X and Y, forms compound Z. X loses electron and Y gains electron. Which of the given properties is not shown by Z?
    1.   Has high melting point
    2.   Has low melting point
    3.   Conducts electricity in molten state
    4.   Occurs as solid
23. If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of
    1.   CuSO₄
    2.   CuCO₃
    3.   Cu(NO₃)₂
    4.   CuO
24. Which of the following represent the correct order of decreasing reactivity?
    1.   Mg > Al > Zn > Fe
    2.   Mg > Zn > Al > Fe
    3.   Al > Zn > Fe > Mg
    4.   Mg > Fe > Zn > Al
25. Which of the following pairs will give displacement reactions?
    1.   NaCl solution and copper metal
    2.   MgCl2 solution and aluminium metal
    3.   FeSO4 solution and silver metal
    4.   AgNO3 solution and copper metal