The rusting of iron is a chemical change because iron reacts with oxygen and moisture to form an entirely new chemical substance known as iron oxide (rust).
7. The outer most layer of earth is called.
(A) Crust
(B) Mantle
(C) Core
(D) Atmosphere
Answer:
(A) Crust
Explanation:
The Earth’s structure consists of distinct layers. The outermost solid rock layer upon which we live is called the crust.
8. The planet near the sun is:
(A) Saturn
(B) Mercury
(C) Earth
(D) Neptune
Answer:
(B) Mercury
Explanation:
Mercury is the innermost and smallest planet in the solar system, making it the closest planet to the Sun.
9. Things that are of no use
(A) Resources
(B) Waste
(C) Minerals
(D) None of these
Answer:
(B) Waste
Explanation:
Materials or items that are no longer useful, needed, or wanted after the completion of a process are defined as waste.
10. Capital of Utter Pradesh:
(A) Bhopal
(B) Lucknow
(C) Agra
(D) Kanpur
Answer:
(B) Lucknow
Explanation:
Lucknow is the executive and legislative capital city of the Indian state of Uttar Pradesh.
