Tag: metals

Quizzes (9) Questions (306)

Questions Related to metals

Multiple choice chemistry metals physical properties of non-metals uses of metals and non metals physical properties of metals and non-metals

Which allotrope of carbon do not conduct electricity?

  1. Graphite

  2. Diamond

  3. Fullerene

  4. Both b and c
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Carbon is a non-metal which have allotropic form that is graphite, diamond and fullerene. Out of this three only graphite is conductor of electricity. Diamond and fullerene do not conduct electricity.

Multiple choice chemistry metals physical properties of non-metals uses of metals and non metals physical properties of metals and non-metals

Non-metals are brittle while metals are ductile. Why?

  1. Because of lesser extent of bonding in non-metals

  2. Because of greater extent of bonding in non-metals

  3. Because of smaller size of non-metallic atoms

  4. Because of lower conductivity of non-metals
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The basic difference between metals and non-metals is the extent of bonding.Metals have very high extent of bonding than that in non-metals which makes the metal malleable. and non-metals brittle.

Multiple choice chemistry metals physical properties of non-metals uses of metals and non metals physical properties of metals and non-metals

Which of the following element is not in the liquid state at room temperature?

  1. $Hg$
  2. $Li$
  3. $Ga$
  4. $Br$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Bromine and mercury are metal which is liquid at room temperature. Gallium a brittle solid at low temperatures, and a liquid at temperatures greater than $29.76^o C$ (slightly above room temperature).Thus gallium is liquid at room temperature.
Bromine is a liquid because electrons are well apart from the nuclei so they are easily distorted .Intermediate intermolecular forces exists and thus it is in liquid state.
 Lithium  is a solid at room temperature.
Multiple choice chemistry metals chemical properties and uses of metals and non-metals introduction to metals physical properties of non-metals

Find the incorrect match.

  1. Fine duct of aluminium - Paints and Lacquers

  2. Reducing agent in the manufacture of dye-stuffs, paints, etc. - copper dust

  3. For cutting tools and crushing machines - Chrome steel

  4. For making cables, automobiles and aeroplane parts - Nickel steel
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The fine duct of aluminium is used in paints and lacquers. For cutting tools and crushing machines chrome steel is used.

For making cables, automobiles and aeroplane part – nickel steel is used. But copper dust is not used as a reducing agent in the manufacture of dyestuffs and paints. So this second is the mismatch.

Correct option is B.

Multiple choice chemistry metals chemical properties and uses of metals and non-metals introduction to metals physical properties of non-metals

Iron is used in construction of bridges and houses.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

There are many different types of steels available today. Each type is made with iron combined with different elements including carbon, silicon, and nickel among others. Steel is an important component in every structure, in every type of construction. Therefore Buildings, bridges, skyscrapers, and other types of construction would not be complete if it does not include iron in its framework.