Everyday Science Phenomena — Homi Bhabha Class 6 General Knowledge MCQs with Solutions
Free Homi Bhabha Class 6 General Knowledge Everyday Science Phenomena MCQs with step-by-step solutions (20 questions). Part of Everyday Science & Environment. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Everyday Science Phenomena · easy · theory
During a storm, why do we usually see the lightning first and hear the thunder a little later?
A. Light travels faster than sound ✓ Correct
B. Our ears are slow
C. Thunder starts much later
D. Sound travels faster than light
Solution: Light travels much faster than sound, so we see the flash before the sound reaches us.
Q2 — Everyday Science Phenomena · easy · theory
Why does a piece of ice float on the surface of water?
A. Water sticks under the ice
B. Ice pushes the water down
C. Ice is lighter (less dense) than water ✓ Correct
D. Ice is heavier than water
Solution: Ice is less dense than water, so it floats instead of sinking.
Q3 — Everyday Science Phenomena · easy · theory
A straw kept in a glass of water looks bent at the surface. This happens because light
A. bends when it passes between water and air ✓ Correct
B. turns into heat
C. stops inside water
D. disappears in water
Solution: Light bends (refracts) as it moves between water and air, making the straw look bent.
Q4 — Everyday Science Phenomena · easy · theory
Why does a wet cloth become dry when it is hung out in the sun?
A. The water evaporates into the air ✓ Correct
B. The cloth drinks the water
C. The water freezes
D. The Sun pushes water away
Solution: Heat from the Sun turns the water into vapour (evaporation), so the cloth dries.
Q5 — Everyday Science Phenomena · easy · theory
You can see your own face in a mirror because light
A. bounces back (reflects) from the mirror ✓ Correct
B. passes through the mirror
C. is made by the mirror
D. is absorbed by the mirror
Solution: A mirror reflects light back to our eyes, so we see our image.
Q6 — Everyday Science Phenomena · easy · theory
A rainbow appears in the sky after rain because tiny water drops
A. block the Sun
B. heat the sunlight
C. split sunlight into different colours ✓ Correct
D. make brand new light
Solution: Water droplets split white sunlight into its seven colours, forming a rainbow.
Q7 — Everyday Science Phenomena · easy · theory
Why does our body sweat on a hot day?
A. To help cool the body down ✓ Correct
B. To make us tired
C. To warm the body more
D. To make us dirty
Solution: Sweat evaporates from the skin and takes away heat, which cools the body.
Q8 — Everyday Science Phenomena · easy · theory
A dark shadow forms behind you in sunlight because
A. light travels in straight lines and your body blocks it ✓ Correct
B. your body makes darkness by itself
C. the Sun switches off
D. light bends around you
Solution: Light travels in straight lines; your body blocks it, leaving a shadow behind you.
Q9 — Everyday Science Phenomena · medium · theory
A metal spoon feels colder to touch than a wooden spoon kept in the same room because metal
A. carries heat away from your hand faster ✓ Correct
B. is much heavier
C. is always cold inside
D. has no heat at all
Solution: Metal is a good conductor and carries heat away from your hand quickly, so it feels colder.
Q10 — Everyday Science Phenomena · medium · theory
If you drop a stone and a feather together in air, the stone reaches the ground first mainly because
A. air resistance slows the light feather more ✓ Correct
B. the stone is magic
C. the feather is heavier
D. gravity pulls only the stone
Solution: Air pushes against the light feather and slows it down, so the stone lands first.
Q11 — Everyday Science Phenomena · medium · theory
Warm air rises upward in a room because warm air is
A. made of water
B. lighter (less dense) than cold air ✓ Correct
C. a solid
D. heavier than cold air
Solution: When air is heated it becomes lighter (less dense), so it rises above the cooler air.
Q12 — Everyday Science Phenomena · medium · theory
You hear an echo in a big empty hall because sound
A. turns into light
B. simply disappears
C. is created by the walls
D. bounces back (reflects) off the walls ✓ Correct
Solution: Sound reflects off the hard walls and returns to your ears as an echo.
Q13 — Everyday Science Phenomena · medium · theory
Sugar dissolves faster in hot water than in cold water because in hot water the tiny particles
A. become much bigger
B. turn into gas
C. move faster and mix quickly ✓ Correct
D. stop moving
Solution: In hot water the particles move faster, so the sugar mixes and dissolves more quickly.
Q14 — Everyday Science Phenomena · medium · theory
A balloon rubbed on your hair can stick to a wall because of
A. gravity
B. air pressure
C. magnetism
D. static electricity ✓ Correct
Solution: Rubbing builds up static electric charge on the balloon, which makes it cling to the wall.
Q15 — Everyday Science Phenomena · medium · theory
Iron gates and nails rust more during the rainy season because rusting needs
A. air (oxygen) together with water ✓ Correct
B. salt only
C. only sunlight
D. heat only
Solution: Rust forms when iron reacts with oxygen and moisture, both of which are plenty in the rains.
Q16 — Everyday Science Phenomena · medium · theory
A slice of apple slowly turns brown when left in the open air because it reacts with
A. floating dust
B. oxygen in the air ✓ Correct
C. the water in the air
D. sunlight only
Solution: The cut surface reacts with oxygen in the air (oxidation), which turns it brown.
Q17 — Everyday Science Phenomena · hard · numerical
A car travels 60 kilometres in 2 hours. What is its speed?
A. 30 km/h ✓ Correct
B. 62 km/h
C. 15 km/h
D. 120 km/h
Solution: Speed = distance ÷ time = 60 ÷ 2 = 30 km/h.
Q18 — Everyday Science Phenomena · hard · numerical
Using the rule °F = (°C × 9/5) + 32, what is 20°C in Fahrenheit?
A. 100°F
B. 52°F
C. 68°F ✓ Correct
D. 36°F
Solution: 20 × 9/5 = 36, and 36 + 32 = 68, so 20°C = 68°F.
Q19 — Everyday Science Phenomena · hard · theory
Food cooks faster in a pressure cooker because the trapped steam raises the pressure, which makes the water
A. boil at a lower temperature
B. stop boiling
C. turn into ice
D. boil at a higher temperature ✓ Correct
Solution: Higher pressure raises the boiling point of water, so the hotter water cooks food faster.
Q20 — Everyday Science Phenomena · hard · theory
A ship made of heavy iron can float on water, even though a small iron nail sinks, because the ship
A. is hollow and its wide shape pushes aside a lot of water ✓ Correct
B. is lighter than a single nail
C. is freshly painted
D. moves very fast
Solution: The wide, hollow shape pushes aside a lot of water, so the average density stays less than water and the ship floats.