Explanation

One Coulomb (C) is the unit of electric charge and is defined as the amount of charge transported by a steady current of 1 Ampere (A) flowing for 1 second.

Mathematically: 

1Coulomb=1Ampere×1second

This means that if a current of 1 Ampere flows through a conductor for 1 second, the total charge transported is 1 Coulomb.

Explanation

As soon as I saw her, I knew I had met her before.

جیسے ہی میں نے اسے دیکھا، میں جانتا تھا کہ میں اس سے پہلے مل چکا ہوں

"Before" is used to indicate a prior encounter or experience with someone.

Explanation

 The Nativist Theory, proposed by Noam Chomsky, argues that humans are born with an innate capacity for language through a mental mechanism called the Language Acquisition Device (LAD).

Explanation

• Clouds float in the atmosphere because they are less dense than the surrounding air. Clouds are formed when water vapor in the air condenses into visible liquid droplets or ice crystals. These droplets or crystals are suspended in the air, and because they are less dense than the air, they float.
• The density of a cloud is typically around 0.05-0.5 g/m³, which is much less than the density of air, which is around 1.2 g/m³. This density difference allows clouds to remain suspended in the air, even though they are heavier than air in terms of their mass.

Explanation

• Replication is the process by which a cell makes an exact copy of its DNA before cell division, ensuring that the new cell receives a complete set of genetic instructions.
• This process is crucial for the transmission of genetic information from one generation of cells to the next.

Explanation

Gene cloning creates multiple identical copies of a specific gene or DNA sequence.

It using techniques like PCR or DNA cloning vectors.

To amplify and study specific genes or genetic elements.

Explanation

An imperative sentence gives a command, instruction, advice, or request

They usually start with a verb

The subject ("you") is implied, not stated

Verb: Think → gives a command

Subject: Implied you (i.e., You think before you speak)

Purpose: Giving advice or instruction

Explanation

• In a horseshoe-shaped classroom, the teacher typically plays a facilitative role, moving around the room to guide and support students as they work in groups.
• This arrangement encourages collaborative learning, peer-to-peer interaction, and active participation.
• The teacher can easily circulate, offer feedback, and address individual questions, fostering a dynamic and inclusive learning environment.

Explanation

 B.F. Skinner proposed the Behaviorist Theory, suggesting that language is learned through conditioning, imitation, and reinforcement, not innate mechanisms.

Explanation

Vygotsky’s Zone of Proximal Development (ZPD) refers to tasks a child cannot do alone but can achieve with guidance.

It highlights the importance of adult or peer support in helping children learn just beyond their current abilities.