Science MCQs
Science MCQs offer a general overview of multiple scientific disciplines such as physics, chemistry, and biology. These questions are ideal for students, job seekers, and competitive exam candidates looking to enhance their scientific knowledge. Whether you're preparing for SSC, HSSC, or general job tests, these MCQs provide a mix of theoretical and practical science questions. This category is particularly useful for testing concepts related to laws of motion, periodic table, cell structure, human anatomy, electricity, and more. The MCQs are curated to support concept building and revision. They also help in developing problem-solving abilities and logical analysis skills, which are crucial in science-based exams.
Q: Moon reflects light from
A) Stars
B) Planets
C) Sun
D) Earth
✅ Correct Answer: C
Explanation: Moon does not emit its own light; it reflects sunlight.
Q: Organ involved in digestion of food
A) Heart
B) Stomach
C) Brain
D) Lungs
✅ Correct Answer: B
Explanation: The stomach secretes enzymes and acids to break down food.
Q: Primary component of natural gas
A) Butane
B) Methane
C) Ethane
D) Propane
✅ Correct Answer: B
Explanation: Methane is the main ingredient in natural gas used for fuel.
Q: Disease caused by lack of insulin
A) Asthma
B) Cholera
C) Anemia
D) Diabetes
✅ Correct Answer: D
Explanation: Diabetes results when the body cannot produce or use insulin effectively.
Q: State of matter with no fixed shape but fixed volume
A) Liquid
B) Plasma
C) Gas
D) Solid
✅ Correct Answer: A
Explanation: Liquids adjust to container shape but retain constant volume.
Q: Element used in nuclear power generation
A) Iron
B) Gold
C) Uranium
D) Lead
✅ Correct Answer: C
Explanation: Uranium is used as a fuel in nuclear reactors to produce electricity.
Q: Primary gas in exhaled air
A) Hydrogen
B) Carbon dioxide
C) Oxygen
D) Nitrogen
✅ Correct Answer: B
Explanation: Carbon dioxide is the main gas exhaled after respiration.
Q: First man-made satellite sent into space
A) Hubble
B) Sputnik 1
C) Apollo 11
D) Voyager 1
✅ Correct Answer: B
Explanation: Sputnik 1 was launched by the Soviet Union in 1957 as the first satellite.
Q: Human organ storing bile
A) Liver
B) Intestine
C) Pancreas
D) Gallbladder
✅ Correct Answer: D
Explanation: The gallbladder stores bile produced by the liver to aid fat digestion.
Q: Device measuring temperature
A) Hygrometer
B) Speedometer
C) Barometer
D) Thermometer
✅ Correct Answer: D
Explanation: A thermometer is used to measure the temperature of substances.