Potpourri
Which is the element that laughs
Helium
I grow in fields, soft and white,
From fluffy bolls I take my flight.
Spun into yarn, I clothe the world,
Natural comfort, gently twirled.
Who am I?
Cotton
Natural Gas mainly consists of __________
Methane (CH4)
a device with two electrodes in contact with an electrolyte that brings about a chemical reaction when connected to an outside source of electricity.
electrolysis cell
I stop the flames, I smother the fight,
Foam, CO₂, or powder — I do it right.
In every lab, I stand in place,
To save lives in a fiery race.
Who am I?
Fire Extinguisher
Why can't you trust Atoms
Because they make up everything
I’m silk-like but not from a worm,
From wood pulp I slowly form.
Shiny and smooth, I’m semi-made,
Artificial silk is the name I trade.
Rayon
Peat, ________, Anthracite, and ______ are the four types of coal...
Lignite and Bituminous
Liquid substance that conducts an electric current is called
Electrolytes
I happen so fast, with light and sound,
Energy bursts and shocks all around.
Too much pressure — I can’t hide,
Boom! I release it all inside.
What am I?
Explosion
Which elements agrees for everything
Potassium "K"
I’m strong as steel, but light as air,
In ropes and nets I’m everywhere.
Born in a lab, not from a sheep,
Stockings and parachutes — I keep.
Who am I?
1. Nylon
Is CNG a safe fuel to use? Give reasons for your answer...
CNG is a safe fuel as it does not emit any harmful gases and can be carried everywhere
Wat is the gas generated at the cathode in an electrolysis of water reaction.
Hydrogen gas
I measure how much energy you get,
From burning fuels in a test set.
Higher I am, more heat I show,
Name me now — I make engines go!
What am I?
Calorific Value
Free Points
Just kidding.............
Answer This
I fall from skies and fill the seas,
I carve the rocks and feed the trees.
I vanish to clouds, yet return as rain,
Without me, all life would be in vain.
Neither food nor fire can do without me,
Guess my name — who could I be?
I’m not wool, yet sweaters I make,
Colorful and soft for warmth’s sake.
Made in factories, not on a hill,
I keep you cozy when it’s chill.
Who am I?
Acrylic
Name 7 products products obtained from the Fractional Distillation of Petroleum
Petroleum Gas, Petrol, Naptha, Kerosene, Diesel, Fuel Oil, Lubricating Oil and Bitumen are the products obtained from the Fractional Distillation of Petroleum...
Wat is the charge of Anode
Positive
I try to tame the dancing flame,
But when I touch, it’s not the same.
Instead of peace, I make it spread,
Across the surface it runs ahead.
So though I quench a forest pyre,
I fail when faced with liquid fire.
Who am I, and why can’t I stop it?
Water — oil floats on water, so fire spreads instead of stopping
I’m smooth and soft, a healer true,
Cracked lips and burns — I comfort you.
Though born from oil, I bring no harm,
Found in a jar, I work like a charm.
Who am I?
Petroleum Jelly
Wrinkle-free and easy to wear,
From bottles to shirts, you’ll find me there.
Strong and shiny, I dry real fast,
Name me quick — don’t come last!
Who am I?
Polyester
Black and sticky, I pave the way,
On roads and roofs I work all day.
From petroleum’s heavy part I come,
Tar-like substance — guess which one.
Who am I?
Residue (Bitumen)
Wat is the charge of a cation
Positive
Lighter than air, yet power I hold,
A single spark makes my story told.
Of all the fuels, I burn the best,
Per gram of mass, I beat the rest.
What am I, whose flame is blue,
The highest value belongs to who?
Answer: Hydrogen — highest calorific value among common fuels.