CBSE Class 7 Science Chapter 4 The World of Metals and Non-metals Worksheet - Free Download

Class 7 Science Worksheet - The World of Metals and Non-metals

MCQ Questions:

Q1: Which metal is commonly used to make food packaging materials as it is cheaper, and its thin sheets can be folded easily into any shape?
a) Aluminium
b) Copper
c) Iron
d) Gold

Q2: Which of the following metals catches fire when it comes in contact with water?
a) Copper
b) Aluminium
c) Zinc
d) Sodium

Q3: Which of the following properties do most metals possess?
a) Malleability
b) Dullness
c) Non-conductivity
d) Brittle

Q4: Which of these metals is known for being the most malleable and ductile?
a) Gold
b) Copper
c) Iron
d) Aluminium

Q5: What is the property that enables metals to produce a ringing sound when struck?
a) Malleability
b) Sonority
c) Ductility
d) Lustre

Fill in the Blanks:

Q1: Materials that allow electricity to flow through them easily are called __________.

Q2: The property of metals by which they can be beaten into thin sheets is called __________.

Q3: Metals react with oxygen to produce __________ which are basic in nature.

Q4: The process of formation of rust on objects made of iron is called __________.

Q5: The property by which materials can be drawn into wires is called __________.

True/False Questions:

Q1: All metals are hard and lustrous.

Q2: Non-metals are generally poor conductors of heat and electricity.

Q3: Metals do not react with oxygen.

Q4: The rusting of iron can be prevented by applying a protective layer of zinc.

Q5: Magnesium burns with a dazzling white flame and forms a white powder when exposed to oxygen.

Very Short Answer Questions:

Q1: What is the process by which metals like iron develop brown deposits?

Q2: What is the property of metals that allows them to be beaten into thin sheets?

Q3: Why are materials like copper and aluminium used in electrical wiring?

Q4: What happens when magnesium reacts with oxygen?

Q5: What is the nature of magnesium oxide when dissolved in water?

Long Answer Questions:

Q1: Explain the properties of metals and non-metals and how they differ.

Q2: Why are gold and silver used in jewellery, and why are only a few metals suitable for this purpose?

Q3: Describe the process of rusting and the methods used to prevent it.

Q4: How do the properties of metals and non-metals influence their uses in everyday life?

Q5: What is the significance of the Iron Pillar of Delhi, and what does it tell us about ancient Indian metallurgy?

For Worksheet Solutions, go to Worksheet Solutions: The World of Metals and Non-metals