Exceptions in Physical Properties

Q.

Mercury is a non-metal which is liquid at normal temperature.

1. True

2. False

Q.

What are superconductor examples?

Q. Why are bells made of metals?

Q.

Why mercury is considered as a metal ?

Q.

Name the hardest non-metal?

Q.

Graphite is a non-metal and has very low melting and boiling points.

1. False

2. True

Q. Which of the following is a non-metal but is lustrous?

1. Iodine
2. Carbon
3. Mercury
4. Fluorine

Q.

Are diamonds brittle?

Q.

Give two uses of Copper.

Q.

Is sulfur a conductor?

Q. Which one of the following set of non-metals has shining lustrous surfaces?

1. Graphite and phosphorous
2. Graphite and iodine
3. Iodine and phosphorous
4. Phosphorous and chlorine

Q.

Name a non-metal which is lustrous and conduct electricity.

Q. Metals have shiny surfaces and this property of metals is called _____.

1. malleability
2. ductility
3. sonority
4. lustre

Q. Which of the following is a lustrous non-metal?

1. Gold
2. Iodine
3. Sulphur
4. Silver

Q. Which non-metal is a good conductor of both heat and electricity?

Q.

Maximum metals are obtained in the state of

1. Liquid
2. Solid
3. Gaseous
4. Plasma

Q.

Question 3 (a)
Phosphorus is a very ___ non-metal.

Q. Identify the true statement from the following

1. All metals are malleable
2. The hardest substance known is a non metal
3. All metals have fixed melting points whereas non metals do not
4. Tungsten is a good conductor of heat and electricity.

Q.

Name two lustrous non-metals.

Q.

List any five important uses of metals.
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Q. Graphite has each of the following properties except

1. ability to conduct electricity
2. grey black colour
3. hardness
4. metallic lustre

Q. Metals have shiny surfaces and this property of metals is called _____.

1. sonority
2. ductility
3. malleability
4. lustre

Q. Why are bells made of metals?

Q.

Mercury is the only metal found in Liquid state at room temperature.

1. True

2. False

Q. Which of the following is/are lustrous non-metals?

1. Iodine
2. Graphite
3. Selenium
4. Sulphur

Q.

The metallic element which exists as liquid at room temperature is:

1. all of the above
2. gallium
3. bromine
4. mercury

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Generally, non-metals are not conductors of electricity. Which of the following is a good conductor of electricity?
(a) Diamond
(b) Graphite
(c) Sulphur
(d) Fullerene

Q.

1. True
2. False

Q.

Identify the element X, that can exhibit the properties of both metals and non-metals.

1. Oxygen
2. Gold
3. Silicon
4. Carbon

Q. Generally, non-metals are not lustrous. Which of the following non-metal is lustrous?

1. Sulphur
2. Nitrogen
3. Iodine
4. Oxygen