Explanation

The SI unit of temperature as per the International System of Units is Kelvin.

It is represented by the symbol  K.

Note:

Celsius is currently a derived unit for temperature in the SI system, Kelvin is the base unit.

Explanation

Solar cells, also known as photovoltaic cells, convert solar energy (sunlight) directly into electrical energy.

They work by using semiconductor materials to absorb photons from sunlight and release electrons, generating electricity.

Explanation

The Central Nervous System (CNS) comprises the:

These two structures are the core of the nervous system, 

• The brain controls how we think, learn, move, and feel.
• The spinal cord carries messages back and forth between the brain and the nerves that run throughout the body..

Explanation

A strain is when a muscle is stretched too much and part of it tears.

It is also called a pulled muscle.

Explanation

He gave me a cheque for fifty thousand rupees.

We use "for" with cheque amounts to indicate the value written on the cheque.

Explanation

The capacity of an object to do work is called energy.

Energy can take many forms and is defined as the capacity a system or object has to perform work.

Explanation

Helium  and Argon is a noble gas, part of Group 18 in the periodic table.

Helium (He)

The lightest noble gas, helium is used in hot air balloons and airships.

It's also used in air containers for deep-sea divers.

Argon (Ar)

Argon makes up 0.93% of the Earth's atmosphere.

It can be prepared by fractional distillation of liquid air.

Explanation

Lebanon Capital is Beirut.

Lebanon Currency is Lebanese Pound.

Lebanon official language is Arabic; French.

Lebanon located is in Continent Asia.

Lebanon Primary Religion is Islam, Christianity.

Lebanon Head of Govt. is Prime Minister –Najib Mikati.

Lebanon Parliament called .

Tricks for Remember

POUND

S-E-S-U

Mind Trick : Sheshu(a name) plays in the Pond.

**S-E-S-U**

S - South Sudan

E - Egypt

S - Syria

U - UK

Explanation

• Arya Samaj was founded on April 10, 1875
• Location: Bombay, India 
• Members:
• 10 million (world)
• 8 million (India)
• Official language: Hindi

Additional information 

• Purpose: Educational, Religious studies, Spirituality, Social reforms
• Arya Samaj: A community of people with noble and virtuous character.
• Arya: Means noble or virtuous person.
• Samaj: Means society or community.

Explanation

The percentage of Punjabi-speaking people in Pakistan is 39%.

List of other Languages:

Sindhi speaking in Pakistan: 15%

Pashto speaking in Pakistan: 18%

Urdu in speaking Pakistan: 8%

Balochi speaking in Pakistan: 3%