Question
The graph shows how waste is disposed of in three cities.
Which statement describes waste disposal in all of the three cities?
A) Burning is the second most common form of waste disposal.
B) Landfill is the main form of waste disposal.
C) More waste is burnt than recycled.
D) Recycling and burning together are the main forms of waste disposal.
▶️Answer/Explanation
Ans: C
The correct answer is C, because :
On an average, the more waste is burnt inspite of other disposal options.
• Recycling is better option but it’s not achieved most.
Question
Some methods of transmitting pathogens are listed.
1 drinking contaminated water
2 contact with another person’s blood
3 contact with another person’s saliva
4 touching contaminated surfaces
How many are indirect methods of transmitting pathogens?
A none
B one
C two
D three
▶️Answer/Explanation
Ans: C
The correct answer is C, because :
Transmission of pathogens is way of infection spread.
Following methods are in transmission of pathogens:
• Drinking contaminated water.
• Contact with another person’s blood.
Question
Statements about pathogens are given.
1 A pathogen is a disease-causing organism.
2 All pathogens are bacteria.
3 A pathogen can be transmitted by indirect contact through contaminated food.
Which statements are correct?
A 1 and 2
B 1 and 3
C 1 only
D 3 only
▶️Answer/Explanation
Ans B
The correct answer is B, because :
Pathogen is the organism that causes infection to infected person.
Pathogens can be any microorganism.
Pathogen can be transmitted by indirect contact through contaminated food, Water.
Question
Campylobacter is a bacterium that can cause food poisoning.
Which word describes Campylobacter?
(A) antibody
(B) disease
(C) pathogen
(D) symptom
▶️Answer/Explanation
Ans: C
The correct answer is C, because :
Food poising is caused by bacterium campylobacter.
It can be described as Pathogen.