Exercise: Metals and Non Metals

Multiple Choice Questions

Which of the following pairs will give displacement reactions?

Which of the following methods is suitable for preventing an iron frying pan from rusting?

An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be-

Food cans are coated with tin and not with zinc because-

Which of the following non-metals is a good conductor of electricity?

Metal exist in liquid state-

In the thermite process, the reducing agent used is-

Electrolytic reduction is used in the extraction of-

Roasting is done generally in case of-

Which among the following is present in human blood?

The border line elements, which neither fit with metals nor with non-metals are known as-

The metals which can displace hydrogen from water at room temperature appear in the activity series-

Which of the following is the lightest metals?

Which of these metals does not liberate hydrogen from dilute acids?

Rusting of iron takes place in-

Silver articles become black on prolonged exposure to air. This is due to the formation of-

The most reactive metal is-

Which property is not exhibited by metals-

Which of the following is an example of amphoteric oxide?

Fill in the Blanks

  1. The ability of metals to be drawn into thin wires is called ________.
  2. ________ is a non-metal, but it is lustrous.
  3. ________ is the most ductile metal.
  4. Chemical formula of rust is _______.
  5. Metals can be beaten into thin sheets. This property is called ________.
  6.  ________ a liquid metal.
  7. Metal oxides react with both acids and bases to produce salt and water are called ________ oxide.
  8. ________ can dissolve gold and platinum.
  9. The green substance formed on the surface of copper when exposed to air is ________.
  10.  ________ is an ore of mercury.
  11. Carbonate ores are changed into oxides by heating strongly in limited air, this process is called ________.
  12. A homologous mixture of two or more than two metals is called ________.
Answers

(1). Ductility, (2). Iodine, (3). Gold, (4). Fe₂O₃.nH₂O, (5). Malleability, (6). Mercury, (7). Amphoteric, (8). Aqua regia, (9). Copper Carbonate, (10). Cinnabar (HgS), (11). Calcination, (12). Alloys.

True/ False

  1. Stainless steel is an alloy of nickel and chromium. (T/ F)
  2. Hydrogen is the lightest non-metal. (T/ F)
  3. Solder is an alloy of lead and zinc. (T/ F)
  4. Ionic compounds have high melting and boiling points. (T/ F)
  5. Bronze is a good conductor of electricity. (T/ F)
Answers

(1). True, (2). True, (3). False, (4). True, (5). False

One-Word Answer

  1. Which metal melts on keeping on palm?
  2. Term used to express the purity of gold.
  3. Bronze is an alloy of which elements?
  4. What is added to Gold to increase its strength?
  5. Name two metals which float in water.
  6. What is the homogeneous mixture of two or more metals?
  7. Which metal does not corrode easily?
  8. What are alloys?
  9. Write on example of alloy.
  10. Give two examples of ionic compound.
Answers

(1). Gallium, (2). Carat, (3). Copper and tin (Cu and Sn), (4). Silver or Copper, (5). Calcium and Magnesium, (6). Alloy, (7). Gold (Au), (8). The homogeneous mixture of two or more metals, (9). Nichrome, (10).  (i) NaCl, (ii) KCl  

Match the column

Section ASection B
1). Solder a). Good conductor  
2). Metal b). Quick Silver
3). Mercury c).Welding
4). Gold d). Allotrope of Carbon
5). Diamonde). Free state
6). Sodium f). Highly reactive metal
7). Non-metal iodine g). Bronze
8). Alloy h). Lustrous
9). Brominei). Liquid non-metal
Answers

(1). > (c), (2). > (a), (3). > (b), (4). > (e), (5). > (d), (6). > (f), (7). > (h), (8). > (g), (9). > (i)