Everyday Science — Mixed Practice — Part 1: 40 MCQs with Explanations
40 exam-level everyday science — mixed practice MCQs with answers and explanations for PPSC, FPSC, NTS preparation.
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Exam-Level PPSC FPSC NTS CSS
Last updated: Oct 13, 2026
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Q1 of 40
How Many Megapixels is the Human Eye?
Correct Answer: Option A — 576
Detailed Academic Explanation:
576 is the correct answer to “How Many Megapixels is the Human Eye”. Items of this type are drawn from the Everyday Science — Mixed Practice — Part 1 syllabus of Pakistani competitive exams, where the fact is tested verbatim.
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q2 of 40
Elastic rebound theory explains:
Correct Answer: Option B — causes of earthquake
Detailed Academic Explanation:
causes of earthquake is the correct answer to “Elastic rebound theory explains:”. Items of this type are drawn from the Everyday Science — Mixed Practice — Part 1 syllabus of Pakistani competitive exams, where the fact is tested verbatim.
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q3 of 40
The SI unit of Dipole moment is __________?
Correct Answer: Option A — Debye
Detailed Academic Explanation:
The SI unit of Dipole moment is Debye .
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q4 of 40
Tetanus is a _________ infection.
Correct Answer: Option A — Bacterial
Detailed Academic Explanation:
Tetanus is a Bacterial infection.
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q5 of 40
Chlorophyll contains _____metal.
Correct Answer: Option A — Magnesium
Detailed Academic Explanation:
Chlorophyll contains Magnesium metal.
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q6 of 40
Tuberculosis is a _________ infection?
Correct Answer: Option A — Bacterial
Detailed Academic Explanation:
Tuberculosis is a Bacterial infection.
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q7 of 40
The correct age of solar system is approximately __________?
Correct Answer: Option C — 4.5 Billion years
Detailed Academic Explanation:
The correct age of solar system is approximately 4.5 Billion years .
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q8 of 40
Bolometer measures: ____________?
Correct Answer: Option D — Heat radiation
Detailed Academic Explanation:
Bolometer measures: Heat radiation .
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q9 of 40
How Many Brains Does an Octopus Have?
Correct Answer: Option B — 9
Detailed Academic Explanation:
9 is the correct answer to “How Many Brains Does an Octopus Have”. Items of this type are drawn from the Everyday Science — Mixed Practice — Part 1 syllabus of Pakistani competitive exams, where the fact is tested verbatim.
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q10 of 40
Dr. James Watson discovered the structure of DNA in __________?
Correct Answer: Option A — 1953
Detailed Academic Explanation:
Dr. James Watson discovered the structure of DNA in 1953 .
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q11 of 40
Outer layer of the human skin is called __________?
Correct Answer: Option D — Epidermis
Detailed Academic Explanation:
Outer layer of the human skin is called Epidermis .
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q12 of 40
Which amongst the following cannot pass through vacuum?
Correct Answer: Option C — Sound
Detailed Academic Explanation:
Sound is the correct answer to “Which amongst the following cannot pass through vacuum”. Items of this type are drawn from the Everyday Science — Mixed Practice — Part 1 syllabus of Pakistani competitive exams, where the fact is tested verbatim.
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q13 of 40
RBCs are also called as_______?
Correct Answer: Option D — Erythrocytes
Detailed Academic Explanation:
RBCs are also called as Erythrocytes .
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q14 of 40
WBCs are also called as _________?
Correct Answer: Option B — Leukocytes
Detailed Academic Explanation:
WBCs are also called as Leukocytes .
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q15 of 40
Night vision is possible with the help of ___________?
Correct Answer: Option D — Infrared Rays
Detailed Academic Explanation:
Night vision is possible with the help of Infrared Rays .
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q16 of 40
The respiratory problem common in smokers is______?
Correct Answer: Option A — Emphysema
Detailed Academic Explanation:
The respiratory problem common in smokers is Emphysema .
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q17 of 40
A fathom is equal to ________feets?
Correct Answer: Option D — 6
Detailed Academic Explanation:
A fathom is equal to 6 feets.
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q18 of 40
What is a Geiger Counter used to measure?
Correct Answer: Option A — Radioactivity
Detailed Academic Explanation:
Radioactivity is the correct answer to “What is a Geiger Counter used to measure”. Items of this type are drawn from the Everyday Science — Mixed Practice — Part 1 syllabus of Pakistani competitive exams, where the fact is tested verbatim.
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q19 of 40
Which one of the following is not a true fruit?
Correct Answer: Option A — Apple
Detailed Academic Explanation:
Apple is the correct answer to “Which one of the following is not a true fruit”. Items of this type are drawn from the Everyday Science — Mixed Practice — Part 1 syllabus of Pakistani competitive exams, where the fact is tested verbatim.
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q20 of 40
What measurement scale is used to determine wind speed?
Correct Answer: Option B — Beaufort Scale
Detailed Academic Explanation:
Beaufort Scale is the correct answer to “What measurement scale is used to determine wind speed”. Items of this type are drawn from the Everyday Science — Mixed Practice — Part 1 syllabus of Pakistani competitive exams, where the fact is tested verbatim.
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q21 of 40
Earthquake waves travel faster in __________?
Correct Answer: Option B — Water
Detailed Academic Explanation:
Earthquake waves travel faster in Water .
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q22 of 40
Activity of Brain is recorded by ____________?
Correct Answer: Option A — EEG (Electroencephalogram)
Detailed Academic Explanation:
Activity of Brain is recorded by EEG (Electroencephalogram) .
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q23 of 40
The winter solstice in the southern Hemisphere occurs on __________?
Correct Answer: Option D — 21 June
Detailed Academic Explanation:
The winter solstice in the southern Hemisphere occurs on 21 June .
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q24 of 40
The Summer solstice in the Northern Hemisphere happens on: __________?
Correct Answer: Option C — 21 June
Detailed Academic Explanation:
The Summer solstice in the Northern Hemisphere happens on: 21 June .
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q25 of 40
The importance of perspiration is to ___________?
Correct Answer: Option C — Regulate body temperature
Detailed Academic Explanation:
The importance of perspiration is to Regulate body temperature .
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q26 of 40
Maximum biological damage is caused by ____________?
Correct Answer: Option D — Gamma rays
Detailed Academic Explanation:
Maximum biological damage is caused by Gamma rays .
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q27 of 40
Which diagnostic scan gives some of the highest radiation doses in diagnostic radiography?
Correct Answer: Option B — CT-Scan
Detailed Academic Explanation:
CT-Scan is the correct answer to “Which diagnostic scan gives some of the highest radiation doses in diagnostic radiography”. Items of this type are drawn from the Everyday Science — Mixed Practice — Part 1 syllabus of Pakistani competitive exams, where the fact is tested verbatim.
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q28 of 40
Which medicine can be used to make urine red in colour?
Correct Answer: Option C — Rifampicin
Detailed Academic Explanation:
Rifampicin is the correct answer to “Which medicine can be used to make urine red in colour”. Items of this type are drawn from the Everyday Science — Mixed Practice — Part 1 syllabus of Pakistani competitive exams, where the fact is tested verbatim.
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q29 of 40
Velometer is used to measure?
Correct Answer: Option B — Speed of Air
Detailed Academic Explanation:
Speed of Air is the correct answer to “Velometer is used to measure”. Items of this type are drawn from the Everyday Science — Mixed Practice — Part 1 syllabus of Pakistani competitive exams, where the fact is tested verbatim.
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q30 of 40
The spray bottles used as window or household cleaner or perfume spray works on: __________?
Correct Answer: Option D — Bernoulli’s Principle
Detailed Academic Explanation:
The spray bottles used as window or household cleaner or perfume spray works on: Bernoulli’s Principle .
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q31 of 40
Selenology is the study of __________?
Correct Answer: Option B — Moon
Detailed Academic Explanation:
Selenology is the study of Moon .
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q32 of 40
1 Carat is equal to __________?
Correct Answer: Option C — 0.2 g
Detailed Academic Explanation:
1 Carat is equal to 0.2 g .
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q33 of 40
What is unit of Pressure?
Correct Answer: Option A — All of these
Detailed Academic Explanation:
All of these is the correct answer to “What is unit of Pressure”. Items of this type are drawn from the Everyday Science — Mixed Practice — Part 1 syllabus of Pakistani competitive exams, where the fact is tested verbatim.
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q34 of 40
What is ‘Tokamak’?
Correct Answer: Option B — A device used in nuclear-fusion research for magnetic confinement of plasma
Detailed Academic Explanation:
A device used in nuclear-fusion research for magnetic confinement of plasma is the correct answer to “What is ‘Tokamak’”. Items of this type are drawn from the Everyday Science — Mixed Practice — Part 1 syllabus of Pakistani competitive exams, where the fact is tested verbatim.
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q35 of 40
Nowadays Milk is not considered balanced diet because it is lacking in ___________?
Correct Answer: Option A — Iron and Vitamin C
Detailed Academic Explanation:
Nowadays Milk is not considered balanced diet because it is lacking in Iron and Vitamin C .
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q36 of 40
Pure limestone is called _______?
Correct Answer: Option A — Calcium Carbonate
Detailed Academic Explanation:
Pure limestone is called Calcium Carbonate .
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q37 of 40
The color which we see when our eyes are closed?
Correct Answer: Option A — Eigengrau
Detailed Academic Explanation:
Eigengrau is the correct answer to “The color which we see when our eyes are closed”. Items of this type are drawn from the Everyday Science — Mixed Practice — Part 1 syllabus of Pakistani competitive exams, where the fact is tested verbatim.
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q38 of 40
Which of the following is a tissue?
Correct Answer: Option D — Blood
Detailed Academic Explanation:
Blood is the correct answer to “Which of the following is a tissue”. Items of this type are drawn from the Everyday Science — Mixed Practice — Part 1 syllabus of Pakistani competitive exams, where the fact is tested verbatim.
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q39 of 40
1 tonne = _____ kg?
Correct Answer: Option B — 1000
Detailed Academic Explanation:
1 tonne = 1000 kg.
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
Q40 of 40
Erythrocyte is another name for a ___________?
Correct Answer: Option D — Red Blood cells
Detailed Academic Explanation:
Erythrocyte is another name for a Red Blood cells .
💡 Key Conceptual Anchor:
Everyday Science — Mixed Practice
💡 How to Use These MCQs
Self-Assessment: Test your current knowledge level before studying.
Learning Aid: Read explanations carefully to understand concepts, not just memorize answers.
Revision Tool: Review these questions periodically before exams.
Time Management: Practice answering within time limits to improve speed.