1
UPSC Civil Service Prelims Paper I 2022 (General Studies)
MCQ (Single Correct Answer)
+2
-0.66
Change Language
Which one of the following statements best describes the role of B cells and T cells in the human body?
A
They protect the body from environmental allergens.
B
They alleviate the body's pain and inflammation.
C
They act as immunosuppressants in the body.
D
They protect the body from the diseases caused by pathogens.
2
UPSC Civil Service Prelims Paper I 2022 (General Studies)
MCQ (Single Correct Answer)
+2
-0.66
Change Language

Consider the following statements:

1. Other than those made by humans, nanoparticles do not exist in nature.

2. Nanoparticles of some metallic oxides are used in the manufacture of some cosmetics.

3. Nanoparticles of same commercial products which enter the environment are unsafe for humans.

Which of the statements given above is/are correct?

A
1 only
B
3 only
C
1 and 2
D
2 and 3
3
UPSC Civil Service Prelims Paper I 2022 (General Studies)
MCQ (Single Correct Answer)
+2
-0.66
Change Language

Consider the following statements:

DNA Barcoding can be a tool to:

1. assess the age of a plant or animal.

2. distinguish among species that look alike.

3. identify undesirable animal or plant materials in processed foods.

Which of the statements given above is/are correct?

A
1 only
B
3 only
C
1 and 2
D
2 and 3
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