Tag: chemistry

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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

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).

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

Explain lustre.

  1. Shining by reflecting light

  2. Deformation into thin sheets

  3. Deformation into rods

  4. Free electrons to conduct electricity and heat
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Lustre is the way light interacts with the surface of a crystal, rock, or mineral. There are various types of lustre like greasy lustre, metallic lustre, dull lustre etc.

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

Which metal is soft in nature?

  1. Sodium

  2. Potassium

  3. Both A and B

  4. None of above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

All the metals are hard in nature. However, both sodium and potassium metals are soft and can be cut using a knife. The bonding in these metals is weak and electrons are not located over a single atom but over a number of atoms.

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 is non-malleable?

  1. Sulphur

  2. Chlorine

  3. Xenon

  4. None of the above
Reveal answer Fill a bubble to check yourself
A,B,C Correct answer
Explanation

Sulphur, chlorine and xenon, all are $p-$block elements.

Element I.e sulphur, chlorine, and xenon posses properties of non-metal like a poor conductor of heat and electricity,  electrons are not free to move, exist in the gaseous state.We know that non-metal are non-malleable.