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Are Weak and Dilute Acids the Same? | HOTS
Weak and Dilute Acids – What’s the difference? People often think that weak and dilute acids are just...
Why is Time always on X-Axis in a Graph | Time & Motion | HOTS | Class 8
In physics, different quantities are often represented on graphs and very commonly time is represented on the horizontal...
Why does your tongue burns when you eat something Hot | HOTS | The Tongue
Have you ever been so excited to drink the first bite of pizza, but your tongue burns because...
LPG has no smell of its own | LPG is an odourless gas| Fuels | Coal & Petroleum | HOTS
If LPG is an odourless gas, then how do we detect a gas #leakage? Ans. This is not...
2 Thin Woolen Sweaters are warmer than 1 thick one |Heat| Fibre to Fabric
Come winters and all of us like to wrap ourselves with colorful Woolen Sweaters…and as the temperature dips...
Earth vs Venus | HOTS | Class 8 | The Universe
Earth vs Venus – while they are two planets in our solar system, the former is the third...
Why do hanging hoardings and banners have holes? | Winds, Storms & Cyclones | HOTS
You may have seen holes made in huge hoardings and banners. Why are these necessary? Let’s find it...
Why do Electric Wires Sag in Summers?| Heat | Thermal Expansion | Class 7
In the summer, because of thermal expansions, the electric wires sag, and in the winter, due to contraction, they...
Why are electric wires made of Copper & not Silver | Electricity | HOTS
Silver is a precious metal and it is the only metal with a higher electrical conductivity than copper....
| Friction | Holding A Glass With Oil In Your Hands Tends To Slip. Why?
This is the stopping force that opposes the relative movement or the tendency of relative motion of two...
If There Was No Friction, What Would Happen To A Moving Object?
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against...
Why Is Rolling Friction Less Than Sliding Friction?
We can understand sliding friction as the resistance force created between any two bodies when sliding against each...
How Does Rolling Friction Decrease Wear and Tear in Machinery?
When surfaces in contact move relative to each other, the friction between the two surfaces converts kinetic energy...
How To Extract Chlorophyll From Leaves?
Chlorophyll is any of several related green pigments found in the mesosomes of cyanobacteria and in the chloroplasts...
Why Are Microorganisms Are Friends and Foes?
Microorganisms are living organism that is so tiny it can only be seen with the aid of a microscope. Consider...