Homeostasis refers to:
[Image of homeostasis diagram feedback loop]- A) Maintenance of internal body balance
- B) Blood clotting
- C) Digestion
- D) Respiration
Hydrogen bomb was developed by:
- A) Enrico Fermi
- B) Edward Teller
- C) Robert Oppenheimer
- D) Otto Hahn
Sea water is salty mainly due to:
- A) Sodium chloride
- B) Magnesium sulphate
- C) Calcium carbonate
- D) Potassium iodide
International Thalassemia Day is observed on:
- A) 8 May
- B) 18 September
- C) 8 June
- D) 12 October
Highest number of deaths worldwide is caused by:
- A) AIDS
- B) Cardiovascular (heart) diseases
- C) Cancer
- D) Road accidents
Solar cells generate:
[Image of solar cell diagram]- A) Alternating current
- B) Direct current
- C) Both equally
- D) No current
Unit of illuminance (light) is:
- A) Joule
- B) Lux
- C) Watt
- D) Candela
The relationship between electricity and magnetism was discovered by:
- A) Hans Christian Oersted
- B) Michael Farady
- C) James Clerk Maxwell
- D) Ampère
Ostrich is the largest living bird. True or False?
- A) True – Ostrich
- B) Great Bustard
- C) Emperor Penguin
- D) Emu
Tim Cook is the CEO of:
- A) Apple
- B) Amazon
- C) Alibaba
- D) Microsoft
Saturated hydrocarbons are also called:
[Image of alkane structure methane ethane]- A) Alkanes
- B) Alkenes
- C) Alkynes
- D) Aromatic hydrocarbons
The protein factories of the cell are:
[Image of ribosome protein synthesis diagram]- A) Mitochondria
- B) Ribosomes
- C) Golgi bodies
- D) Lysosomes
Cyclones are:
- A) Earthquakes
- B) Large rotating storm systems
- C) Volcanic eruptions
- D) Tsunamis
The study of fruits and flowering plants cultivation is:
- A) Pomology / Horticulture
- B) Floriculture
- C) Olericulture
- D) Dendrology
Wheat grain is botanically a:
- A) Fruit
- B) Seed
- C) Vegetable
- D) Leaf
Insulin is secreted by the:
[Image of pancreas endocrine function]- A) Liver
- B) Pancreas
- C) Thyroid
- D) Pituitary gland
Mafic magma is rich in:
- A) Iron and magnesium, low silica
- B) High silica
- C) Sodium and potassium
- D) Aluminium only
Malaria medicine (quinine) originally contained:
- A) Arsenic
- B) Quinine (derived from cinchona bark)
- C) Chloroquine (modern)
- D) Penicillin
In human body, communication and control is primarily done by:
- A) Nervous system
- B) Blood
- C) Hormones only
- D) Bones
Long winter sleep in animals is called:
- A) Aestivation
- B) Hibernation
- C) Torpor
- D) Migration
Which vitamin is water-soluble?
[Image of water soluble vs fat soluble vitamins chart]- A) Vitamin B and C
- B) Vitamin A
- C) Vitamin D
- D) Vitamin E
Primary producers in a food chain are:
- A) Green plants
- B) Bacteria
- C) Animals
- D) Fungi
The cooling agent colder than ice commonly used is solid:
- A) Carbon dioxide (dry ice)
- B) Nitrogen
- C) Ammonia
- D) Oxygen
Plasmodium has:
- A) One nucleus
- B) Multiple nuclei (or coenocytic)
- C) No nucleus
- D) Two nuclei only
It takes sunlight approximately how long to reach Earth?
- A) 8 minutes 20 seconds
- B) 8 minutes
- C) 20 minutes
- D) 8 hours
Animal reserved energy is stored as:
- A) Starch
- B) Glycogen
- C) Cellulose
- D) Sucrose
The weight of an object at the centre of the Earth would be:
- A) Same
- B) Zero (weightless)
- C) Double
- D) Half
A full-grown tree can absorb approximately how much CO2 per year?
- A) 48 pounds
- B) 22 kg
- C) 100 pounds
- D) 10 pounds
Which country launched the Al-Amal (Hope) Mars mission?
- A) UAE
- B) Pakistan
- C) Turkey
- D) Iran
Gold, silver, and copper are classified as:
- A) Hard minerals
- B) Native (natural) metallic minerals
- C) Compound minerals
- D) Artificial minerals
Vertical movement of air creates:
- A) Wind (differential pressure)
- B) Atmospheric pressure only
- C) Absolute pressure
- D) Vacuum
The gemstone ruby is aluminium oxide containing traces of:
- A) Chromium
- B) Iron
- C) Titanium
- D) Magnesium
Far-sightedness (hypermetropia) is corrected using:
[Image of hypermetropia correction convex lens diagram]- A) Convex lens
- B) Concave lens
- C) Plano lens
- D) Cylindrical lens
The least polluting gas among common ones is:
- A) Nitrogen
- B) Carbon monoxide
- C) Sulphur dioxide
- D) Chlorine
Amount of water vapour present in the atmosphere is called:
- A) Pressure
- B) Humidity
- C) Temperature
- D) Density
Distance between Earth and Sun is generally measured in:
- A) Astronomical Units (AU)
- B) Light-years
- C) Parsecs
- D) Kilometres
The material that clots blood is mainly:
[Image of blood coagulation fibrin network]- A) Fibrin (protein)
- B) Platelet
- C) Plasma
- D) Haemoglobin
Pakistan’s approximate per capita annual sugar consumption is closest to:
- A) 15 kg
- B) 25 kg
- C) 35 kg
- D) 45 kg
The main purpose of the UN Framework Convention on Climate Change is to:
- A) Stabilise greenhouse gas concentrations
- B) Reduce air pollution only
- C) Protect ozone layer
- D) Ban CFCs
If a room is not ventilated, which gas accumulates and can be harmful?
- A) Carbon dioxide
- B) Nitrogen
- C) Oxygen
- D) Argon
Which gas is filled in airships to make them float?
- A) Helium
- B) Hydrogen
- C) Nitrogen
- D) Oxygen
The average sunlight travel time to Earth is:
- A) 8 hours
- B) 20 minutes
- C) About 8 minutes 20 seconds
- D) 1 hour
Conclusion
Outdated old answers do not constitute the PPSC Past Papers, but a full course of success. With studying the Everyday Science MCQs of 2021 and researching the previous trends in the period between 2011 and 2025, students will acquire the insights into the style of the examination and enhance their preparation to a large extent. The Success Station is committed to delivering the right and updated materials in a user-friendly format that can guide the candidates towards the realization of their ambitions. Keep in touch with The Success Station because of additional solved MCQs, study tips, and exam guides, with which you will be able to become closer to your dream job.
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