Explanation

Explanation

Emmerson Mnangagwa replaced Robert Mugabe to became Zimbabwe president in November 2017.

Explanation

• Rana tigrina, also known as the Asian giant toad or the Indian bullfrog.
• It is a species of frog found in Southeast Asia and the Indian subcontinent.

Explanation

A protractor allows you to measure and draw exact angles like 72° directly.

A compass alone cannot construct 72° easily without complex geometric steps, so it’s not practical for this angle.

Explanation

"Among" is used when referring to a group of people or things.

Since the president is surrounded by multiple bodyguards, "among" is the correct choice.

Explanation

The project method is particularly effective for teaching science.

Because it involves hands-on, inquiry-based learning where students work on practical tasks or investigations.

Explanation

Group IIA elements (alkaline earth metals) have 2 electrons in their outermost s-orbital.

Their general electronic configuration ends with ns², where n is the period number.

Explanation

Magnetic flux linked (Φ) is proportional to the number of turns in the coil.

Doubling the number of turns doubles the total flux linked, assuming the magnetic field and area remain the same.

Explanation

Mercury is the only elemental metal that remains in a liquid state at room temperature (around 25°C).

It is used in thermometers, barometers, and other scientific instruments due to this unique property.

Four other elements are liquids slightly warmer than room temperature.

They are:

1. Francium
2. Cesium
3. Gallium
4. Rubidium

Explanation

Huashang was launched as Pakistan's first Chinese-language weekly newspaper.

It aims to enhance cultural and business ties between China and Pakistan, especially under CPEC.