Practicing Class 7 Science MCQ and Class 7 Science Chapter 4 The World of Metals and Non metals MCQ Questions Online Test with Answers daily helps in time management.
Class 7 The World of Metals and Non metals MCQ with Answers
MCQ on The World of Metals and Non metals Class 7
Class 7 Science Chapter 4 The World of Metals and Non metals MCQ Questions with Answers
Question 1.
The ability of metals to be drawn into thin wire is known as
(a) Ductility
(b) Malleability
(a) Sonority
(d) Conductivity
Answer:
(a) Ductility
Question 2.
Which of the following can be beaten into thin sheets?
(a) Zinc
(b) Phosphorus
(c) Sulfur
(d) Oxygen
Answer:
(a) Zinc
Question 3.
Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?
(i) Good thermal conductivity (heat transfer)
(ii) Good electricity conductivity
(iii) Ductility
(iv) High melting point
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iii)
(d) (i) and (iv)
Answer:
(d) (i) and (iv)
Question 4.
Which of the following oxides is acidic in nature?
(a) Sodium oxide
(b) Iron oxide
(c) Calcium oxide
(d) Sulfur dioxide
Answer:
(d) Sulfur dioxide
Question 5.
Which of the following elements would yield basic oxide?
(a) Phosphorus
(b) Sodium
(c) Nitrogen
(d) Sulfur
Answer:
(b) Sodium
Question 6.
During galvanization, the iron is coated with
(a) Nickel
(b) Zinc
(c) Aluminium
(d) Chromium
Answer:
(b) Zinc
The World of Metals and Non metals Class 7 Assertion-Reason Type Questions
Assertion-Reason Directions: Each of the questions (i) and (ii) contain two statements – first ‘Assertion’ and second ‘Reason’. Select the correct answer to these question from the codes (a), (b), (c) or (d) as given below:
(a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
(b) Both Assertion and Reason are true and Reason is NOT the correct explanation Qf Assertion.
(c) Assertion is true and Reason is false.
(d) Assertion is false and Reason is true.
(i) Assertion (A): Most of the metals are hard.
Reason (R): Sodium and potassium can be easily cut with a knife.
Answer:
(b) Both Assertion and Reason are true and Reason is NOT the correct explanation of Assertion.
(ii) Assertion (A): Aluminium foil is used for wrapping food items; it is formed by beating it with a hammer.
Reason (R): Aluminium is a metal and is malleable.
Answer:
(a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
The World of Metals and Non metals Class 7 Fill in the blanks
1. Sodium is a reactive ___________.
Answer:
metal
2. Metals are good conductors of ___________ and ___________.
Answer:
heat, electricity
3. ___________ is the only metal which is liquid at room temperature.
Answer:
Mercury
4. Metals like ___________ and ___________ are soft and can be ___________ cut with a knife.
Answer:
Sodium, potassium
5. Oxides of non-metals are generally ___________ in nature.
Answer:
acidic
The World of Metals and Non metals Class 7 True or False
Question 1.
Sulfur can be drawn into wires.
Answer:
False.
Explanation:
Sulfur is a non-metal and non-metals are not ductile (cannot be drawn into wires).
Question 2.
Magnesium oxide is acidic in nature.
Answer:
False.
Explanation:
Oxides of metals are basic in nature and magnesium is a metal.
The World of Metals and Non metals Class 7 Match the following
Question 1.
Match the following items given in Column A with that in Column B:
| Column A | Column B |
| 1. Mercury | (a) Jewellery |
| 2. Gold | (b) Machinery |
| 3. Copper | (c) Liquid |
| 4. Iron | (d) Electric wires |
| 5. Aluminium | (e) Wrapping food |
Answer:
| Column A | Column B |
| 1. Mercury | (c) Liquid |
| 2. Gold | (a) Jewellery |
| 3. Copper | (d) Electric wires |
| 4. Iron | (b) Machinery |
| 5. Aluminium | (e) Wrapping food |