Explanation

• Summative assessment is conducted at the end of a course, term, unit, or academic year to measure students' overall learning and achievement.
• It evaluates whether the learning objectives have been successfully achieved.

Common examples of summative assessments:

• Final examinations
• Board examinations
• End-of-term tests
• Final projects
• Annual assessments

Additional information:

• Diagnostic Assessment: In the beginning of learning → identifies prior knowledge, strengths, and weaknesses.
• Formative Assessment: In the middle/during learning → improves teaching and learning through feedback.

Last verified on 04-06-2026

Explanation

• Khewra Salt Mine is located in Khewra near Pind Dadan Khan, Jhelum District, Punjab.
• It is the largest and oldest salt mine in Pakistan.
• It is the second-largest in the world.

Additional information:

• It is also called the Mayo Salt Mine.
• The salt deposits were discovered during the campaign of Alexander the Great in 326 BC.
• The mine was officially opened in 1872 during the British period.

Last verified on 14-03-2026

Explanation

Explanation

• Noble gases like helium, neon, and argon are placed in Group VIII (Group 18 in modern IUPAC numbering).
• They are inert.
• They have a full outer electron shell.
• It making them stable and unreactive.

Last verified on 07-11-2026

Explanation

• Diagnostic assessment is used to identify students' current knowledge, skills, and learning gaps before instruction begins.
• It helps teachers plan appropriate lessons based on each student's existing learning level.

Last verified on 06-11-2026

Explanation

• All electromagnetic waves (like light, X-rays, and radio waves) travel through a vacuum at the same constant speed.
• It is approximately 3 × 10⁸ meters per second.
• This speed is known as the speed of light in a vacuum.

Last verified on 31-10-2026

Explanation

• Displacement is the straight-line change in position from an initial point to a final point.
• It is a vector quantity, having both magnitude and direction.

Last verified on 31-10-2026

Explanation

• A voltmeter measures potential difference (voltage) between two points in a circuit.
• To do this correctly, it must be connected in parallel with the component across which the voltage is to be measured.

Last verified on 28-10-2026

Explanation

• The normal body temperature is: 37°C.
• The average normal body temperature is generally accepted as 98.6°F (37°C).
• A temperature over 100.4°F (38°C) means you have a fever.

Additional Information:

• Hypothermia is the term used for temperature less than 36.50°C.
• Mild Pyrexia is the term used for temperature (99-100°F).
• Moderate Pyrexia is the term used for temperature (100-103°F).
• Severe Pyrexia is the term used for temperature (103-105°F).

Explanation

• Water has maximum density at 4°C.
• When Water is in its Solid form (Ice) below 0°C.

Last verified on 27-10-2026