Metals and Its Properties

Q. Identify the properties of copper because of which it is used for making electrical wires.

1. Thermal conductivity
2. Electrical Conductivity
3. Ductility
4. Malleability

Q. is the most malleable metal.

1. Silver
2. Aluminum
3. Sodium
4. Gold
5. Lithium

Q.

Identify the most reactive and least reactive metal among the following: Al, K, Ca, Au.

Q. Which of the following can be easily drawn into wires?

1. Phosphorus
2. Copper
3. Sulphur
4. Oxygen

Q.

Identify the properties of the metals from the uses mentioned in the table given below.
$$\begin{array}{cc}\text{Uses}& \text{Property}\\ \text{Used to make foils to wrap food}& \text{X}\\ \text{Used to make electric wires}& \text{Y}\\ \text{Used to make ornaments}& \text{Z}\end{array}$$

1. X:- Malleability

   Y:- Metallic lustre

   Z:- Ductility
2. X:- Malleability

   Y:- Ductility

   Z:- Metallic lustre
3. X:- Metallic lustre

   Y:- Ductility

   Z:- Malleability
4. X:- Metallic lustre

   Y:- Malleability

   Z:- Ductility

Q. The metals that produce ringing sounds, are said to be ______.

1. malleable
2. lustrous
3. ductile
4. sonorous

Q. Iron articles are shiny when new, but get coated with a reddish brown layer when left in open for a long time.

1. True
2. False

Q. Identify the property by virtue of which a metal can be beaten into thin sheets along with the correct example of metals.

1. Property:- Ductility
   Example:- Bar of graphite
2. Property:- Ductility
   Example:- Crystal of iodine
3. Property:- Malleability
   Example:- Granules of zinc
4. Property:- Malleability
   Example:- Lump of coal

Q.

Name a metal that reacts vigorously with dil.HCl

Q. Difference between metal and non metals?

Q.

Write the physical properties of metals

S

Q.

Lead is not used for the preparation of hydrogen from acid give reason.

Q.

________ are generally good conductors of heat and electricity.

Q. Which element is most suitable for making all of the following materials?​
1. Cooking utensils​
2. Chocolate wrappers​
3. Electric wires​

1. Silicon
2. Carbon
3. Mercury
4. Aluminium

Q. Which of the following substance can be flattened on beating with a hammer?

1. Lump of sulphur
2. Piece of coal
3. Lump of phosphorus
4. Piece of aluminium

Q. Question 5
Metals are generally hard. Which of the following metals is an exception and can be cut with a knife?

(a) iron
(b) sodium
(c) gold
(d) magnesium

Q.

Complete and balance the following equation.

$\mathrm{S}+6{\mathrm{HNO}}_3\to \mathrm{\_\_\_\_\_}+\mathrm{\_\_\_\_\_\_}+\mathrm{\_\_\_\_\_}$

Q. Identify the total number of substances that are malleable from the list given below:

Iron, copper, oxygen, gold, sulphur

1. 3

Q. Magnesium reacts with steam to produce magnesium oxide and .

1. hydrogen gas
2. oxygen gas
3. magnesium hydride

Q.

Which among the following will have the highest increase in temperature for the same amount of heat?

1. Sand

2. Copper

3. Water

4. Aluminium

Q. is the best conductor of electricity.

1. Copper
2. Aluminium
3. Silver
4. Gold
5. Platinum

Q.
Match the substances give in column A with their uses given in column B

Q.

Why are school bells made up of metal?

Q.

Aluminium is a metal.

1. True

2. False

Q.

Which of the following is a metal?

1. Sugar

2. Wood

3. Iron

4. Oxygen

Q. [TBQ.1]
Complete the table:

Property of metal	Use in everyday life
i. Ductility
ii. Malleability
iii. Conduction of heat
iv. Conduction of electricity
v. Sonority

Q. Choose the correct statement for aluminium.

1. It can be drawn into wire.
2. It is a bad conductor of electricity.
3. It cannot be hammered into thin sheets.
4. It is a bad conductor of heat.

Q.

What is the property that all alloys have in common?

1. Lower melting point

2. Higher melting point

3. Ductility

4. Malleability

Q. The ability of metals to be drawn into thin wires is known as:

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

Q. Burning of paper is a ________ change.