Which blood cells fight infection? MCQ with Answer and Explanation

Which blood cells fight infection?
A. Red Blood Cells
B. Plasma
C. Platelets
D. White Blood Cells
Answer: Option D
Solution (By JKSSB Mock Tests)
White blood cells (leukocytes) are part of the immune system and fight infections.

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Question #1
What is 'Big Data Analytics' used for?
A. Analyzing large data sets
B. Hardware maintenance
C. Software development
D. Small data processing

Correct Answer: Option A


Explanation:
It helps in extracting insights from large data.

Question #2
Which vehicle launched Mangalyaan?
A. GSLV
B. PSLV-C25
C. LVM3
D. SLV-3

Correct Answer: Option B


Explanation:
PSLV-C25 successfully launched Mangalyaan.

Question #3
What is 'Encryption' used for?
A. To print 3D documents
B. To secure data by converting it into a coded format
C. To make computers faster
D. To increase storage capacity

Correct Answer: Option B


Explanation:
Encryption encodes data so that only authorized parties can read it.