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 of the following is non-ductile?

  1. Selenium

  2. Copper

  3. Aluminium

  4. Magnesium
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Selenium is a chemical element with symbol Se and atomic number 34. It is a nonmetal with properties that are intermediate between those of its periodic table column-adjacent chalcogen elements sulfur and tellurium. As it a non-metal, it cannot be deformed into a wire as it is brittle.

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 poor conductors of heat, which are tend to:

  1. be brittle

  2. conduct an electrical current

  3. have a shiny luster

  4. be malleable

  5. lose electrons
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Non metals tend to gain or share electrons when they react with other substances. 
They are poor conductors of heat and electricity. 
They are non-lustrous and have various colors. 
They are brittle and non-malleable hard or soft. 
Multiple choice chemistry metals physical properties of non-metals uses of metals and non metals physical properties of metals and non-metals

______________ is the non-metal which conduct electricity.

  1. Carbon

  2. Nitrogen

  3. Oxygen

  4. Sulphur
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Carbon is the non-metal which conduct electricity in the form of graphite which is it's allotrope. Allotropes are the compound of the element in which they have same chemical properties but different physical properties. 

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

Non-metals do not show ductility due to absence of:

  1. metallic bonds which allow one electron to slip over another

  2. covalent bonds which gives strength

  3. ionic bonds which gives makes it hard

  4. co-ordinate bonds which which gives extra stability
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Non-metals do not show ductility due to absence of metallic bonds which allow one electron to slip over another. High degrees of ductility in metals occur due to metallic bonds. In metallic bonds valence shell electrons are delocalized and shared between many atoms. The delocalized electrons allow metal atoms to slide over one another without being subjected to strong repulsive forces that would cause non-metals to shatter.