Tag: general characteristics and uses of metals

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Multiple choice chemistry metals physical properties of metals and non-metals some physical properties of metals general characteristics and uses of metals

Door locks are made of metals because metals:

  1. have lustre

  2. are opaque

  3. are good conductors of heat

  4. are hard and strong
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Door locks are usually needed to be strong to stop thieves or other trespassing. 

So we need a hard and strong material for the manufacturing of locks and metals are feasible for this purpose.

Hence, the correct option is $\text{D}$

Multiple choice chemistry metals physical properties of metals and non-metals some physical properties of metals general characteristics and uses of metals

The property of metals producing a ringing sound when struck is called :

  1. sonority

  2. permeability

  3. ductility

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

Sonority (of a material) is the property of producing a ringing sound when struck. Most metals are sonorous. Therefore, they are used in many instruments (eg. cymbals and bells). Almost all non-metals are non-sonorous, i.e. they don't produce a ringing sound when struck.


Hence, the correct option is $\text{A}$

Multiple choice chemistry metals physical properties of metals and non-metals some physical properties of metals general characteristics and uses of metals

A metal which is brittle in nature:

  1. zinc

  2. hydrogen

  3. sodium

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

Metals are a common type of ductile material. Copper, aluminum, and steel are examples of ductile metals. The opposite of ductility is brittleness, where a material breaks when tensile stress is applied to lengthen it. Examples of brittle materials include cast iron, concrete, and some glass products. Zinc is relatively more brittle than others.

The correct option is A.

Multiple choice chemistry metals physical properties of metals and non-metals some physical properties of metals general characteristics and uses of metals

Which of the following metals is soft in nature?

  1. Platinum

  2. Iron

  3. Aluminium

  4. Sodium
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sodium is the soft silvery metal at standard temperature and pressure. It can be readily cut with a knife as it is very soft. When freshly cut sodium has a bright silvery luster. If exposed to air the surface rapidly tarnishes, darkening at first and then forming a white coat of sodium hydroxide and sodium carbonate.

Multiple choice chemistry metals physical properties of metals and non-metals some physical properties of metals general characteristics and uses of metals

Which of the following compounds is known as sugar of lead?

  1. $PbSO _4$
  2. $PbCO _3$
  3. $(CH _3COO) _2Pb$
  4. $PbCl _2$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Lead (II)acetate also known as sugar of lead,salt of saturn and Goulard's powder is a white crystalline chemical compound with a sweetish taste. It is made by treating lead ($II$) oxide with acetic acid.

Multiple choice chemistry metals physical properties of metals and non-metals some physical properties of metals general characteristics and uses of metals

Metals are usually ________ in nature.

  1. soft

  2. hard

  3. data insufficient

  4. none of above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Metals are usually solid in nature. There is less metal that is soft in nature. Some metals are used to make items like coins because they are hard and will not wear away quickly. 


For example aluminium (which is shiny and white), gold (which is yellow and shiny), and silver and nickel (also white and shiny).