Digestion begins mechanically via chewing and chemically via saliva in the mouth, where salivary amylase starts breaking down complex carbohydrates.
27. Doctor has advised Suhana to eat sprouts because
(A) they are tasty
(B) they are nutritious
(C) they are cheap
(D) they are easily available
Answer:
(B) they are nutritious
Explanation:
The process of sprouting seeds significantly multiplies their nutritional profile, making vitamins, minerals, and proteins much easier for the human body to absorb.
28. The amount of water vapour present in the atmosphere is called
(A) volume
(B) humidity
(C) density
(D) none of these
Answer:
(B) humidity
Explanation:
In meteorology, humidity is the precise scientific term used to describe the concentration or amount of water vapor present in the air.
29. Which of the following gas supports burning?
(A) Carbon dioxide
(B) Oxygen
(C) Nitrogen
(D) Both (A) & (C)
Answer:
(B) Oxygen
Explanation:
Oxygen is a reactive gas that is absolutely essential for the chemical process of combustion (burning) to occur.
30. Mount Everest is located in
(A) India
(B) Nepal
(C) Sri Lanka
(D) China
Answer:
(B) Nepal
Explanation:
Mount Everest, the Earth’s highest mountain above sea level, is located in the Mahalangur Himal sub-range of the Himalayas, exactly on the border between Nepal and Tibet (China), with the summit accessed primarily from Nepal.
