How Did They Think of That?
Handy Tips
Famous Duos
Everyday Expressions
What’s the Difference?
100

Which everyday product was invented after a scientist noticed that spilled rubber mixed with sulfur became unusually tough?

A) Eraser

B) Rubber band

C) Vulcanized rubber

D) Pencil grip

C) Vulcanized rubber

100

What’s a simple way to keep brown sugar from hardening in the container?

A) Add a slice of bread

B) Store it in the freezer

C) Mix in a teaspoon of salt

D) Keep the lid slightly open

A) Add a slice of bread

100

Which duo is known for their detective work in children’s mystery books?

A) Tom & Jerry

B) Nancy & George

C) The Hardy Boys

D) Calvin & Hobbes

C) The Hardy Boys

100

Which expression refers to revealing your true intentions after hiding them for a while?

A) Show your cards

B) Bite your tongue

C) Pass the buck

D) Hit the sack

A) Show your cards

100

What’s the difference between jam and jelly?  

A) Jam uses whole fruit; jelly uses fruit juice  

B) Jam is sweeter than jelly  

C) Jelly must be refrigerated; jam does not  

D) Jam contains no sugar  

A) Jam uses whole fruit; jelly uses fruit juice

200

Which kitchen staple was created when a chemist accidentally left a pot of boiled milk and sugar to cool, discovering it had solidified into a sweet spread?

A) Marshmallow fluff

B) Peanut brittle

C) Dulce de leche

D) Caramel sauce

C) Dulce de leche

200

What’s an easy trick to prevent a pot of water from boiling over?

A) Add a splash of vinegar

B) Place a wooden spoon across the top

C) Stir constantly

D) Lower the stove temperature by half

B) Place a wooden spoon across the top

200

Which comedy team became famous for the routine “Who’s on First?”

A) Laurel & Hardy

B) Abbott & Costello

C) Martin & Lewis

D) Burns & Allen

B) Abbott & Costello

200

If someone “bends over backward,” what are they doing?

A) Trying very hard to help

B) Avoiding responsibility

C) Changing their opinion

D) Making a quick decision

A) Trying very hard to help

200

What’s the difference between seltzer and tonic water?  

A) Seltzer has carbonation; tonic has none  

B) Tonic contains quinine; seltzer does not  

C) Seltzer is sweetened; tonic is not  

D) Tonic is flavored with citrus; seltzer is not  

B) Tonic contains quinine; seltzer does not

300

Which office supply was invented when a researcher tried to create a super-strong adhesive but instead ended up with a weak, reusable one?

A) Sticky notes

B) Glue stick

C) Double-sided tape

D) Rubber cement

A) Sticky notes

300

What’s a quick way to test whether batteries still have charge without using a device?

A) Shake them and listen for rattling

B) Drop them gently and see if they bounce

C) Hold them up to a light

D) Roll them on a flat surface

B) Drop them gently and see if they bounce


300

Which animated duo is known for their elaborate traps and constant pursuit of cheese?

A) Chip & Dale

B) Pinky & The Brain

C) Tom & Jerry

D) Wallace & Gromit

D) Wallace & Gromit


300

Which expression means to take credit for someone else’s achievement?

A) Steal someone’s thunder

B) Add fuel to the fire

C) Jump the gun

D) Move the goalposts

A) Steal someone’s thunder

300

What’s the difference between an alligator and a crocodile?  

A) Alligators live only in saltwater; crocodiles only in freshwater  

B) Alligators have U‑shaped snouts; crocodiles have V‑shaped snouts  

C) Crocodiles are always larger than alligators  

D) Alligators cannot open their jaws underwater  

B) Alligators have U‑shaped snouts; crocodiles have V‑shaped snouts

400

Which household product was invented when a scientist testing radar equipment noticed that a nearby chocolate bar had melted?

A) Electric kettle

B) Microwave oven

C) Induction cooktop

D) Toaster oven

B) Microwave oven

400

What’s a reliable method to remove water rings from wooden furniture?

A) Rub with lemon juice

B) Apply mayonnaise and wipe after a few hours

C) Use warm soapy water

D) Spray with glass cleaner

B) Apply mayonnaise and wipe after a few hours


400

Which musical duo created hits like “Bridge Over Troubled Water” and “The Sound of Silence”?

A) Hall & Oates

B) Simon & Garfunkel

C) Loggins & Messina

D) The Everly Brothers

B) Simon & Garfunkel


400

If a situation is described as “the straw that broke the camel’s back,” what does it refer to?

A) A surprising opportunity

B) A small final problem that causes a big reaction

C) A misunderstanding between friends

D) A decision made too quickly

B) A small final problem that causes a big reaction


400

What’s the difference between baking soda and baking powder?  

A) Baking soda is a complete leavening agent; baking powder needs an acid  

B) Baking powder is a complete leavening agent; baking soda needs an acid  

C) Baking soda is sweeter than baking powder  

D) Baking powder is only used in bread  

B) Baking powder is a complete leavening agent; baking soda needs an acid

500

Which medical breakthrough began when a scientist returned from vacation to find mold growing on a petri dish — and noticed it had killed the surrounding bacteria?

A) Insulin

B) Penicillin

C) Smallpox vaccine

D) Antiseptic spray

B) Penicillin


500

What’s a practical way to quiet a squeaky door hinge when you don’t have oil on hand?

A) Rub with a bar of soap

B) Heat the hinge with a hair dryer

C) Tap the hinge pin with a hammer

D) Tighten the screws completely

A) Rub with a bar of soap

500

Which literary duo appears in stories where one partner narrates and the other solves intricate mysteries?

A) Jeeves & Wooster

B) Holmes & Watson

C) Poirot & Hastings

D) Nero Wolfe & Archie Goodwin

B) Holmes & Watson

500

What does the expression “throwing in the towel” originally refer to?

A) A chef giving up on a recipe

B) A boxer signaling defeat

C) A sailor ending a voyage

D) A painter abandoning a canvas

B) A boxer signaling defeat

500

What’s the difference between weather and climate?  

A) Weather refers to temperature; climate refers only to rainfall  

B) Weather is long‑term patterns; climate is daily conditions  

C) Weather is short‑term conditions; climate is long‑term patterns  

D) Weather occurs only in the atmosphere; climate occurs on land  

C) Weather is short‑term conditions; climate is long‑term patterns


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