Explanation

- Kyoto is a historic city in Japan

It is known for its temples, shrines, and traditional culture.  

- It was the capital of Japan 

Founded: 794

Explanation

pH scale: 0 to 14  

pH < 7 = Acidic

pH > 7 = Basic

pH = 7 = Neutral  

  - pH 3 means it’s a strong acid, like HCl or vinegar.

Explanation

MI-5 is the United Kingdom's domestic counter-intelligence

MI5 stands for Military Intelligence, Section 5

Mi5 is also known as the Security Service

It was Formed on 7 October 1909 (as the Secret Service Bureau)

Its Headquarters is located in Thames House, London, United Kingdom

Explanation

A consistent and repeatable error caused by a flaw in equipment, technique, or experimental setup.

- Examples:

  - A faulty weighing scale always giving 0.2g extra.

  - Burette readings always off by 0.2 mL.

  - Incorrect calibration of instruments.

Explanation

7 days × 24 hours = 168 hours

Explanation

Formula:  

pH = -log[H⁺]  

[H⁺] = 0.01 = 10⁻²  

pH = -log(10⁻²) = 2 

Explanation

Number of molecules = moles × Avogadro’s number  

= 0.5 × 6.022 × 10²³  

= 3.011 × 10²³ molecules 

Explanation

- A voltmeter measures the potential difference (voltage) between two points in a circuit.  

- It is always connected in parallel to the component.  

- The SI unit of potential difference is the Volt (V).  

- Potential difference is the work done per unit charge to move a charge between two points.  

  - Formula: V = W / Q  

    - V = potential difference (volts)  

    - W = work done (joules)  

    - Q = charge (coulombs)  

- A voltmeter has high resistance so it doesn't draw current from the circuit.

Explanation

A year may be a leap year if it is evenly divisible by 4.

The Solar year is 365.2422 days long, a length which no calendar year can accommodate.

Generally, a leap year happens every four years

The next leap day will be on Thursday, February 29, 2024.

4323

Explanation

The length of the common border between Pakistan and Afghanistan is 2611 km

...

The common border between Pakistan and Afghanistan is called Durand Line

..

British signed the Treaty of Durand line with Abur Rehman Khan

The agreement was signed on November 12, 1893, in Kabul, Afghanistan.

The agreement was signed between Sir Mortimer Durand, the Indian Foreign Secretary at the time and Amir Abdur Rahman Khan in Kabul.

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According to the Survey of Pakistan, the border between Pakistan and Afghanistan is 2611 km

ND18-2-2023