📘 MOST REPEATED IMPORTANT MCQs - PART 3
Everyday Science | IBA STS BPS 5 to 15 Test Preparation
📌 Exam Pattern Information:
- ✅ MCQs English me
- ✅ Roman Urdu detailed explanation (points style)
- ✅ Past papers + repeated concepts based
- ✅ IBA STS BPS 5-15 level
3
PART 3 (1–50) | Everyday Science MCQs - Repeated Concepts
🧬 Human Body & Health
🧬 Human Body & Health
1. Which organ stores urine?
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Kidney urine banati hai
• Urinary bladder urine store karta hai
• Urethra se urine bahar nikalta hai
• Urinary bladder urine store karta hai
• Urethra se urine bahar nikalta hai
🧬 Human Body & Health
2. Which vitamin is fat soluble?
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Fat soluble vitamins: A, D, E, K
• Body me store ho jate hain
• Water soluble vitamins: B complex, C
• Body me store ho jate hain
• Water soluble vitamins: B complex, C
🧬 Human Body & Health
3. Which disease is caused by lack of iodine?
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Iodine thyroid gland ke liye zaroori
• Kami se Goiter (gardan ka phoolna) hota hai
• Source: iodized salt, seafood
• Kami se Goiter (gardan ka phoolna) hota hai
• Source: iodized salt, seafood
🧬 Human Body & Health
4. Which organ controls balance of body?
✅ Correct Answer: B
📝 Explanation (Roman Urdu):
• Cerebellum balance aur posture control karta hai
• Chalna, kharay rehna isi se hota hai
• Cerebrum: thinking, learning
• Chalna, kharay rehna isi se hota hai
• Cerebrum: thinking, learning
🧬 Human Body & Health
5. Which blood group is universal recipient?
✅ Correct Answer: D
📝 Explanation (Roman Urdu):
• AB positive blood group sab se blood receive kar sakta hai
• Isi liye universal recipient kehte hain
• O negative: universal donor
• Isi liye universal recipient kehte hain
• O negative: universal donor
🌱 Plants & Biology
🌱 Plants & Biology
6. Germination requires:
✅ Correct Answer: B
📝 Explanation (Roman Urdu):
• Beej ugne ke liye:
- Water
- Oxygen
- Suitable temperature zaroori
• Sunlight germination ke baad chahiye
- Water
- Oxygen
- Suitable temperature zaroori
• Sunlight germination ke baad chahiye
🌱 Plants & Biology
7. Which part of plant prepares food?
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Leaf me chlorophyll hota hai
• Photosynthesis leaf me hoti hai
• Roots: water absorb, Stem: support, transport
• Photosynthesis leaf me hoti hai
• Roots: water absorb, Stem: support, transport
🌱 Plants & Biology
8. Animals that eat both plants and meat are called:
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Omnivores = plants + meat
• Example: human, bear, crow
• Herbivores: plants only
• Carnivores: meat only
• Example: human, bear, crow
• Herbivores: plants only
• Carnivores: meat only
🌱 Plants & Biology
9. Which gas is released during photosynthesis?
✅ Correct Answer: B
📝 Explanation (Roman Urdu):
• Photosynthesis me plants:
- CO₂ lete hain
- Oxygen release karte hain
• Ye process sunlight aur chlorophyll se hoti hai
- CO₂ lete hain
- Oxygen release karte hain
• Ye process sunlight aur chlorophyll se hoti hai
🌱 Plants & Biology
10. Which organ helps plants in respiration?
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Stomata leaf ke chotay pores hotay hain
• Gas exchange hoti hai (oxygen in, CO₂ out)
• Respiration plants me din raat dono time hoti hai
• Gas exchange hoti hai (oxygen in, CO₂ out)
• Respiration plants me din raat dono time hoti hai
⚡ Physics
⚡ Physics
11. Unit of electric resistance is:
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Electric resistance ki unit Ohm (Ω) hai
• Current ki unit: Ampere
• Voltage ki unit: Volt
• Power ki unit: Watt
• Current ki unit: Ampere
• Voltage ki unit: Volt
• Power ki unit: Watt
⚡ Physics
12. Which type of mirror forms real image?
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Concave mirror real image banata hai
• Torch, headlights, shaving mirror me use hota hai
• Convex mirror virtual image banata hai
• Torch, headlights, shaving mirror me use hota hai
• Convex mirror virtual image banata hai
⚡ Physics
13. Energy of position is called:
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Potential energy position ki wajah se hoti hai
• Example: raised object, stretched spring
• Kinetic energy: motion ki wajah se
• Example: raised object, stretched spring
• Kinetic energy: motion ki wajah se
⚡ Physics
14. Which force pulls objects towards earth?
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Gravitational force objects ko earth ki taraf kheenchti hai
• Isi ki wajah se hum zameen par chalte hain
• Gravity ka discovery Isaac Newton ne kiya
• Isi ki wajah se hum zameen par chalte hain
• Gravity ka discovery Isaac Newton ne kiya
⚡ Physics
15. Device used to convert AC to DC is:
✅ Correct Answer: B
📝 Explanation (Roman Urdu):
• Rectifier AC (Alternating Current) ko DC (Direct Current) me convert karta hai
• Mobile charger me use hota hai
• Transformer: voltage increase/decrease karta hai
• Mobile charger me use hota hai
• Transformer: voltage increase/decrease karta hai
🧪 Chemistry
🧪 Chemistry
16. Common salt is chemically called:
✅ Correct Answer: B
📝 Explanation (Roman Urdu):
• Common salt = Sodium chloride (NaCl)
• Sea water se milta hai
• Body ke liye zaroori, blood pressure control karta hai
• Sea water se milta hai
• Body ke liye zaroori, blood pressure control karta hai
🧪 Chemistry
17. Which metal is best conductor of electricity?
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Copper electricity ka best conductor hai
• Isi liye wires me use hota hai
• Silver sab se behtar hai lekin mehnga hai
• Isi liye wires me use hota hai
• Silver sab se behtar hai lekin mehnga hai
🧪 Chemistry
18. Which substance turns blue litmus red?
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Acid blue litmus ko red karta hai
• Base red litmus ko blue karta hai
• Neutral substances dono ko change nahi karte
• Base red litmus ko blue karta hai
• Neutral substances dono ko change nahi karte
🧪 Chemistry
19. Which gas is used in fire extinguishers?
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• CO₂ fire ko oxygen nahi milne deta
• Is liye fire extinguish hoti hai
• CO₂ heavier than air, fire par gir kar oxygen ko block karti hai
• Is liye fire extinguish hoti hai
• CO₂ heavier than air, fire par gir kar oxygen ko block karti hai
🧪 Chemistry
20. Rusting occurs due to:
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Rusting iron ka reaction hai oxygen aur water ke sath
• Iron + Oxygen + Water → Iron oxide (rust)
• Prevention: painting, galvanizing
• Iron + Oxygen + Water → Iron oxide (rust)
• Prevention: painting, galvanizing
🌍 Earth, Space & Environment
🌍 Earth, Space & Environment
21. The nearest planet to sun is:
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Mercury sun ka sab se qareeb planet hai
• Planets order: Mercury → Venus → Earth → Mars
• Sab se door: Neptune
• Planets order: Mercury → Venus → Earth → Mars
• Sab se door: Neptune
🌍 Earth, Space & Environment
22. Which planet has rings?
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Saturn ka ring system sab se prominent hai
• Jupiter, Uranus, Neptune ke bhi rings hain lekin chotay
• Saturn ke rings ice aur dust se bane hain
• Jupiter, Uranus, Neptune ke bhi rings hain lekin chotay
• Saturn ke rings ice aur dust se bane hain
🌍 Earth, Space & Environment
23. Which layer of earth supports life?
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Crust earth ki upper layer hai
• Isi par plants, animals, humans rehte hain
• Mantle: semi-solid layer, Core: center, bahut garam
• Isi par plants, animals, humans rehte hain
• Mantle: semi-solid layer, Core: center, bahut garam
🌍 Earth, Space & Environment
24. Which gas is most abundant in air?
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Air me sab se zyada Nitrogen (78%) hoti hai
• Oxygen: 21%
• Argon: 0.9%
• CO₂: 0.04%
• Oxygen: 21%
• Argon: 0.9%
• CO₂: 0.04%
🌍 Earth, Space & Environment
25. Deforestation increases:
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Deforestation se soil erosion badh jati hai
• Trees mitti ko pakre rakhte hain
• Jungle katne se pani ka cycle bhi disturb hota hai
• Trees mitti ko pakre rakhte hain
• Jungle katne se pani ka cycle bhi disturb hota hai
🔬 General Science Mix (Most Repeated)
🔬 General Science Mix
26. Instrument to measure pressure:
✅ Correct Answer: B
📝 Explanation (Roman Urdu):
• Barometer atmospheric pressure naapta hai
• Thermometer: temperature
• Hygrometer: humidity
• Anemometer: wind speed
• Thermometer: temperature
• Hygrometer: humidity
• Anemometer: wind speed
🔬 General Science Mix
27. Study of animals is called:
✅ Correct Answer: B
📝 Explanation (Roman Urdu):
• Zoology = animals ka study
• Botany = plants ka study
• Biology = living things ka study
• Ecology = environment ka study
• Botany = plants ka study
• Biology = living things ka study
• Ecology = environment ka study
🔬 General Science Mix
28. Which disease spreads through polluted water?
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Cholera polluted water se phailta hai
• Symptoms: diarrhea, dehydration
• Malaria aur Dengue mosquitoes se phailte hain
• TB air se phailti hai
• Symptoms: diarrhea, dehydration
• Malaria aur Dengue mosquitoes se phailte hain
• TB air se phailti hai
🔬 General Science Mix
29. Which organ produces insulin?
✅ Correct Answer: B
📝 Explanation (Roman Urdu):
• Pancreas insulin produce karta hai
• Insulin blood sugar control karta hai
• Diabetes me insulin production kam ho jati hai
• Insulin blood sugar control karta hai
• Diabetes me insulin production kam ho jati hai
🔬 General Science Mix
30. Which vitamin helps in calcium absorption?
✅ Correct Answer: D
📝 Explanation (Roman Urdu):
• Vitamin D calcium absorption me madad karta hai
• Strong bones aur teeth ke liye zaroori
• Source: sunlight, fish, eggs
• Strong bones aur teeth ke liye zaroori
• Source: sunlight, fish, eggs
🧠 Rapid Revision MCQs (31-50)
🧠 Rapid Revision
31. Boiling point of water = ___
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Normal atmospheric pressure par water 100°C par boil hota hai
• Freezing point: 0°C
• Freezing point: 0°C
🧠 Rapid Revision
32. SI unit of temperature:
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• SI unit of temperature: Kelvin (K)
• Daily use: Celsius (°C)
• USA me: Fahrenheit (°F)
• 0 K = absolute zero (-273.15°C)
• Daily use: Celsius (°C)
• USA me: Fahrenheit (°F)
• 0 K = absolute zero (-273.15°C)
🧠 Rapid Revision
33. Blood is a:
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Blood ek liquid tissue hai
• Cells se mil kar banta hai (RBC, WBC, Platelets)
• Body me transportation ka kaam karta hai
• Cells se mil kar banta hai (RBC, WBC, Platelets)
• Body me transportation ka kaam karta hai
🧠 Rapid Revision
34. Which metal is used in thermometer?
✅ Correct Answer: B
📝 Explanation (Roman Urdu):
• Mercury thermometer me use hota hai
• Ye temperature change par easily expand/contract hota hai
• Digital thermometers me alcohol use hoti hai
• Ye temperature change par easily expand/contract hota hai
• Digital thermometers me alcohol use hoti hai
🧠 Rapid Revision
35. Which sense organ detects taste?
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Tongue taste detect karta hai
• Taste buds par taste receptors hotay hain
• Basic tastes: sweet, sour, salty, bitter, umami
• Taste buds par taste receptors hotay hain
• Basic tastes: sweet, sour, salty, bitter, umami
🧠 Rapid Revision
36. Which organ helps in digestion?
✅ Correct Answer: B
📝 Explanation (Roman Urdu):
• Stomach food digest karta hai
• Hydrochloric acid aur enzymes food ko break karte hain
• Small intestine me complete digestion hota hai
• Hydrochloric acid aur enzymes food ko break karte hain
• Small intestine me complete digestion hota hai
🧠 Rapid Revision
37. Which vitamin is called sunshine vitamin?
✅ Correct Answer: D
📝 Explanation (Roman Urdu):
• Vitamin D ko sunshine vitamin kehte hain
• Sunlight se skin me banta hai
• Bones aur teeth ke liye zaroori
• Sunlight se skin me banta hai
• Bones aur teeth ke liye zaroori
🧠 Rapid Revision
38. Which type of teeth are used for cutting?
✅ Correct Answer: D
📝 Explanation (Roman Urdu):
• Incisors cutting ke liye hoti hain (front teeth)
• Canines: tearing ke liye
• Premolars aur Molars: chewing aur grinding ke liye
• Canines: tearing ke liye
• Premolars aur Molars: chewing aur grinding ke liye
🧠 Rapid Revision
39. Which gas causes acid rain?
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Sulphur dioxide (SO₂) acid rain ka main cause hai
• Factories aur vehicles se nikalta hai
• Barish ke pani ke sath mix ho kar acid banta hai
• Factories aur vehicles se nikalta hai
• Barish ke pani ke sath mix ho kar acid banta hai
🧠 Rapid Revision
40. Which process converts liquid into gas?
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Liquid → Gas = Evaporation
• Gas → Liquid = Condensation
• Solid → Liquid = Melting
• Liquid → Solid = Freezing
• Gas → Liquid = Condensation
• Solid → Liquid = Melting
• Liquid → Solid = Freezing
🧠 Rapid Revision
41. Which organ helps in hearing?
✅ Correct Answer: B
📝 Explanation (Roman Urdu):
• Ear hearing aur balance dono ke liye kaam karta hai
• Outer ear: sound collect
• Middle ear: amplify
• Inner ear: convert to nerve signals
• Outer ear: sound collect
• Middle ear: amplify
• Inner ear: convert to nerve signals
🧠 Rapid Revision
42. Which nutrient repairs body tissues?
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Proteins body ki tissues ko repair karte hain
• Growth aur development ke liye zaroori
• Sources: meat, eggs, milk, pulses
• Growth aur development ke liye zaroori
• Sources: meat, eggs, milk, pulses
🧠 Rapid Revision
43. Which planet is called Earth's twin?
✅ Correct Answer: B
📝 Explanation (Roman Urdu):
• Venus ko Earth's twin kehte hain
• Size aur mass me Earth ke barabar hai
• Atmosphere CO₂ se bhari hai, bahut garam hai
• Size aur mass me Earth ke barabar hai
• Atmosphere CO₂ se bhari hai, bahut garam hai
🧠 Rapid Revision
44. Which cell lacks nucleus?
✅ Correct Answer: B
📝 Explanation (Roman Urdu):
• Red blood cells (RBCs) me nucleus nahi hota
• Isi liye zyada oxygen carry kar sakte hain
• WBCs, nerve cells, muscle cells sab me nucleus hota hai
• Isi liye zyada oxygen carry kar sakte hain
• WBCs, nerve cells, muscle cells sab me nucleus hota hai
🧠 Rapid Revision
45. Which part of brain controls heartbeat?
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Medulla oblongata involuntary functions control karta hai
• Heartbeat, breathing, blood pressure
• Brain stem ka hissa hai
• Heartbeat, breathing, blood pressure
• Brain stem ka hissa hai
🧠 Rapid Revision
46. Which material is insoluble in water?
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Sand water me dissolve nahi hoti
• Salt, sugar, glucose pani me dissolve hoti hain
• Insoluble solids filtration se separate kiye jatay hain
• Salt, sugar, glucose pani me dissolve hoti hain
• Insoluble solids filtration se separate kiye jatay hain
🧠 Rapid Revision
47. Which gas is used in respiration?
✅ Correct Answer: B
📝 Explanation (Roman Urdu):
• Oxygen respiration me use hota hai
• Cells oxygen se energy produce karti hain
• CO₂ waste product hai jo bahar nikalta hai
• Cells oxygen se energy produce karti hain
• CO₂ waste product hai jo bahar nikalta hai
🧠 Rapid Revision
48. Which vitamin helps eyesight?
✅ Correct Answer: A
📝 Explanation (Roman Urdu):
• Vitamin A eyesight ke liye zaroori hai
• Kami se night blindness hoti hai
• Sources: carrots, milk, eggs, green vegetables
• Kami se night blindness hoti hai
• Sources: carrots, milk, eggs, green vegetables
🧠 Rapid Revision
49. Which metal is lightest?
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Aluminum sab se light weight metals me se hai
• Aerospace industry me use hota hai
• Lithium sab se halka metal hai lekin normal use me nahi
• Aerospace industry me use hota hai
• Lithium sab se halka metal hai lekin normal use me nahi
🧠 Rapid Revision
50. Which organ is pumping station of body?
✅ Correct Answer: C
📝 Explanation (Roman Urdu):
• Heart body ka pumping station hai
• Blood ko poore body me pump karta hai
• 4 chambers hain: 2 atria, 2 ventricles
• Blood ko poore body me pump karta hai
• 4 chambers hain: 2 atria, 2 ventricles