Everyday Science MCQs with Answers and Explanations
Everyday science is a compulsory part of the CSS General Science and Ability paper and appears in almost every PPSC, FPSC, KPPSC, SPSC, BPSC, NTS and OTS test, as well as in armed forces initial tests and teaching jobs. These everyday science MCQs with answers are arranged by topic so you can revise one area at a time: chemistry, physics, the human body, health, diseases and nutrition, biology of cells, plants and animals, scientific instruments, units and inventions, space and astronomy and environment, ecology and energy. Every answer has been checked, and each MCQ appears on only one topic page. For quick revision before a test, start with our 100 most repeated everyday science MCQs.
Take a scored quiz instead →Everyday Science Quick Facts for PPSC, FPSC, NTS and CSS
Everyday science MCQs reward quick recall of instruments, units, chemical names and body facts. The tables below collect the answers that examiners repeat most often. Revise them first, then practise the topic pages above.
Instruments and what they measure
| Instrument | Measures |
|---|---|
| Barometer | Atmospheric pressure |
| Hygrometer | Relative humidity of the air |
| Anemometer | Wind speed |
| Seismograph | Earthquake ground motion (magnitude on the Richter scale) |
| Lactometer / Hydrometer | Purity of milk / density (specific gravity) of liquids |
| Pyrometer | Very high temperatures, such as in furnaces |
| Ammeter / Voltmeter / Galvanometer | Electric current / voltage / very small currents |
| Altimeter / Odometer | Altitude / distance travelled by a vehicle |
SI units and common chemical names
| Quantity or substance | Answer |
|---|---|
| Force / energy / power | Newton / joule / watt |
| Pressure / frequency / resistance | Pascal / hertz / ohm |
| Temperature / luminous intensity | Kelvin / candela |
| Common salt | Sodium chloride (NaCl) |
| Baking soda / washing soda | Sodium bicarbonate (NaHCO3) / sodium carbonate decahydrate |
| Plaster of Paris / quicklime | Calcium sulphate hemihydrate / calcium oxide |
| Laughing gas / dry ice | Nitrous oxide (N2O) / solid carbon dioxide |
| Natural gas (Sui gas) / LPG | Mainly methane / propane and butane |
Human body and health facts
| Fact | Answer |
|---|---|
| Bones in an adult skeleton | 206 (longest: femur; smallest: stapes) |
| Normal body temperature / blood pressure | About 37 °C / about 120/80 mmHg |
| Universal donor / universal recipient | O negative / AB positive |
| Lifespan of red blood cells | About 120 days |
| Chromosomes in a human body cell | 46 (23 pairs) |
| Vitamin A / C / D / K deficiency | Night blindness / scurvy / rickets / poor blood clotting |
| Malaria / dengue carrier | Female Anopheles mosquito / Aedes mosquito |
Frequently Asked Questions
Which everyday science topics are most important for PPSC, FPSC and NTS?
The human body, vitamins and diseases, scientific instruments and SI units, chemical names and formulas, and basic physics such as light, sound and electricity supply most questions. Space facts, the atmosphere and environmental issues such as the ozone layer and the greenhouse effect follow closely.
Is everyday science part of the CSS exam?
Yes. General Science and Ability is a compulsory 100-mark CSS paper. Its science part covers physical sciences, biological sciences, environmental science, food and agriculture and information technology, so the topic pages above match most of its MCQ syllabus.
What is the difference between mass and weight?
Mass is the amount of matter in an object and stays the same everywhere; it is measured in kilograms. Weight is the force of gravity on that mass, measured in newtons, so it changes from place to place. An astronaut has the same mass on the Moon but weighs about one-sixth as much.
Why does the sky look blue?
Sunlight is scattered by the gas molecules of the atmosphere, and shorter blue wavelengths are scattered much more than red ones. This effect, called Rayleigh scattering, spreads blue light across the whole sky. At sunrise and sunset the light travels through more air, so the blue is scattered away and the sky looks red and orange.
How should I prepare everyday science MCQs?
Study one topic at a time, starting with the human body and health, then chemistry and physics. Make short lists of instruments, units, chemical names and vitamin deficiencies, practise the MCQs of each topic page, and revise the quick-facts tables above before the test.