Which chemical element is found in all organic compounds? MCQ with Answer and Explanation

Which chemical element is found in all organic compounds?
A. Carbon
B. Nitrogen
C. Oxygen
D. Sulfur
Answer: Option A
Solution (By JKSSB Mock Tests)
Organic chemistry is defined as the study of carbon-based compounds.

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Practice More Science and Technology Questions

Question #1
What is the use of LiDAR?
A. Sound navigation
B. Magnetic detection
C. Radio communication
D. Measuring distance with laser

Correct Answer: Option D


Explanation:
LiDAR is used in mapping and autonomous vehicles.

Question #2
What is the use of 'Li-Fi' technology?
A. Radio waves
B. Sound waves
C. Data transmission using light
D. Magnetic fields

Correct Answer: Option C


Explanation:
Li-Fi uses visible light for wireless communication.

Question #3
The James Webb Space Telescope is primarily designed to observe in which spectrum?
A. Visible light
B. Ultraviolet
C. X-ray
D. Infrared

Correct Answer: Option D


Explanation:
JWST is optimized for infrared astronomy.