Science and Technology MCQs

Static General Knowledge

Science and Technology MCQs

Practice Science and Technology MCQs with answers and detailed explanations covering scientific inventions, technological advancements, space missions, information technology, biotechnology, artificial intelligence, discoveries, innovations and current developments frequently asked in SSC, Railway, Banking, UPSC, JKSSB, Police, Defence, Teaching and other competitive examinations.

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Total Questions

Practice Questions

Page 14 of 24
Question #261
What is the powerhouse of the cell?
A. Cytoplasm
B. Nucleus
C. Cell Membrane
D. Mitochondria
Discuss
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Correct Answer: Option D

Explanation:
Mitochondria produce energy (ATP).
This question belongs to: Static General Knowledge Science and Technology
Question #262
Which gas is essential for photosynthesis?
A. Carbon Dioxide
B. Nitrogen
C. Oxygen
D. Argon
Discuss
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Correct Answer: Option A

Explanation:
Plants require carbon dioxide for the photosynthesis process.
This question belongs to: Static General Knowledge Science and Technology
Question #263
Which element is commonly used in light bulb filaments?
A. Tungsten
B. Copper
C. Silver
D. Gold
Discuss
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Correct Answer: Option A

Explanation:
Tungsten has a very high melting point, making it perfect for light bulb filaments.
This question belongs to: Static General Knowledge Science and Technology
Question #264
What is the SI unit of force?
A. Joule
B. Pascal
C. Newton
D. Watt
Discuss
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Correct Answer: Option C

Explanation:
The Newton (N) is the SI unit of force.
This question belongs to: Static General Knowledge Science and Technology
Question #265
Which planet is farthest from the sun?
A. Jupiter
B. Saturn
C. Neptune
D. Uranus
Discuss
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Correct Answer: Option C

Explanation:
Neptune is the eighth and farthest known planet from the Sun.
This question belongs to: Static General Knowledge Science and Technology
Question #266
Which disease is caused by mosquito bites?
A. Typhoid
B. Cholera
C. Pneumonia
D. Malaria
Discuss
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Correct Answer: Option D

Explanation:
Malaria is transmitted through the bite of infected Anopheles mosquitoes.
This question belongs to: Static General Knowledge Science and Technology
Question #267
What is the speed of light in vacuum?
A. 2.5 x 10^8 m/s
B. 3 x 10^8 m/s
C. 5 x 10^8 m/s
D. 4 x 10^8 m/s
Discuss
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Correct Answer: Option B

Explanation:
The speed of light is approximately 300,000 km/s or 3 x 10^8 m/s.
This question belongs to: Static General Knowledge Science and Technology
Question #268
Which metal is the best conductor of electricity?
A. Gold
B. Aluminum
C. Silver
D. Copper
Discuss
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Correct Answer: Option C

Explanation:
Silver is the most electrically conductive element, although copper is often used due to cost.
This question belongs to: Static General Knowledge Science and Technology
Question #269
What is the main component of natural gas?
A. Propane
B. Methane
C. Butane
D. Ethane
Discuss
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Correct Answer: Option B

Explanation:
Natural gas is primarily composed of methane (CH4).
This question belongs to: Static General Knowledge Science and Technology
Question #270
Who developed the periodic table?
A. Antoine Lavoisier
B. John Dalton
C. Dmitri Mendeleev
D. Isaac Newton
Discuss
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Correct Answer: Option C

Explanation:
Dmitri Mendeleev organized elements into the first periodic table.
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Question #271
What is the boiling point of water in Celsius?
A. 110°C
B. 90°C
C. 80°C
D. 100°C
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Correct Answer: Option D

Explanation:
Water boils at 100°C at sea level.
This question belongs to: Static General Knowledge Science and Technology
Question #272
Which organ produces insulin in the body?
A. Liver
B. Gall bladder
C. Pancreas
D. Kidney
Discuss
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Correct Answer: Option C

Explanation:
The pancreas produces insulin, which regulates blood sugar levels.
This question belongs to: Static General Knowledge Science and Technology
Question #273
Which planet is called the 'Blue Planet'?
A. Venus
B. Mars
C. Neptune
D. Earth
Discuss
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Correct Answer: Option D

Explanation:
Earth is called the Blue Planet because of its abundant water.
This question belongs to: Static General Knowledge Science and Technology
Question #274
What is the chemical formula for water?
A. OH
B. H2O2
C. H2CO3
D. H2O
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Correct Answer: Option D

Explanation:
Water consists of two hydrogen atoms and one oxygen atom.
This question belongs to: Static General Knowledge Science and Technology
Question #275
What is the study of bacteria called?
A. Virology
B. Phycology
C. Bacteriology
D. Mycology
Discuss
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Correct Answer: Option C

Explanation:
Bacteriology is the branch of science that studies bacteria.
This question belongs to: Static General Knowledge Science and Technology
Question #276
Which element is required for combustion?
A. Argon
B. Nitrogen
C. Carbon dioxide
D. Oxygen
Discuss
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Correct Answer: Option D

Explanation:
Oxygen is a key reactant in combustion reactions.
This question belongs to: Static General Knowledge Science and Technology
Question #277
Which vitamin is synthesized by sunlight in the skin?
A. Vitamin C
B. Vitamin B
C. Vitamin D
D. Vitamin A
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Correct Answer: Option C

Explanation:
Exposure to sunlight allows the skin to produce Vitamin D.
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Question #278
Which state of matter has a fixed volume but no fixed shape?
A. Solid
B. Gas
C. Liquid
D. Plasma
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Correct Answer: Option C

Explanation:
Liquids take the shape of their container but maintain a constant volume.
This question belongs to: Static General Knowledge Science and Technology
Question #279
Which scientist formulated the laws of motion?
A. Isaac Newton
B. Albert Einstein
C. Galileo
D. Stephen Hawking
Discuss
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Correct Answer: Option A

Explanation:
Sir Isaac Newton formulated the three laws of motion that describe the relationship between motion and forces.
This question belongs to: Static General Knowledge Science and Technology
Question #280
What is the chemical name for salt?
A. Sodium Chloride
B. Calcium Chloride
C. Potassium Chloride
D. Magnesium Sulfate
Discuss
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Correct Answer: Option A

Explanation:
Common table salt is Sodium Chloride (NaCl).
This question belongs to: Static General Knowledge Science and Technology

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Select the most appropriate meaning of the idiom: 'Cloud cuckoo land'.
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