Explanation

Angular acceleration is produced by torque.

Torque is the rotational equivalent of force.

And just as force causes linear acceleration, torque causes angular acceleration. 

Explanation

The slope of a velocity-time graph gives the rate of change of velocity, which is acceleration.

At any instant, this slope shows the instantaneous acceleration.

Explanation

The subject “Our clean environment” is singular, so we need the singular form of the verb.

The verb “reflects” is the correct singular form of “reflect” in the present simple tense.

Explanation

The correct idiom is "casting pearls before swine," which means offering something valuable to those who won’t appreciate it.

"Swine" refers to pigs in a figurative, biblical context.

Explanation

Catastrophic means کسی ایسی چیز کے لئے جس سے بہت زیادہ نقصان یا تباہی ہو

Disastrous means اہم نقصان یا بربادی کا سبب بن رہا ہے

Explanation

The phrase “placed on the table” means the book is resting directly on the surface.

"On" correctly shows contact between the book and the table.

Explanation

Starch is a type of polysaccharide, which falls under the category of carbohydrates.

It is a complex carbohydrate made up of many glucose units and serves as an energy storage molecule in plants.

Explanation

Synthetic rubber like neoprene is made by the polymerization of chloroprene (C₄H₅Cl).

It is known for its resistance to oil, heat, and weathering, making it useful in industrial applications.

Explanation

Monosaccharides are the building blocks of disaccharides (such as sucrose, lactose, and maltose) and polysaccharides (such as cellulose and starch).

A glycosidic bond is a covalent bond that connects two monosaccharides to form a disaccharide or polysaccharide. 

Explanation

 Ethene (also known as ethylene) is a naturally occurring plant hormone that plays a key role in fruit ripening.

It is commonly used commercially to artificially ripen fruits like bananas, tomatoes, and avocados.