Explanation

Qanoon Al-Masoodi fil Haiyat wan-Najoom is a famous book by the renowned scholar Al-Biruni.

It focuses on astronomy and mathematics, contributing significantly to the scientific knowledge of the time.

Explanation

The sentence "They have completed the project" is in the active voice, and the passive form is "The project has been completed by them".

This maintains the same tense (present perfect) while changing the subject and object.

Explanation

The number of bones in a human skull is 22

The human skull is generally considered to consist of twenty-two bones

• eight cranial bones
• fourteen facial skeleton bones

**

while

300 bones are there in a newborn infant.

The human hand has 27 bones

Explanation

Sesamoid bones are extremely small bones found in within muscles or tendons (e.g., the kneecap or patella).

They protect tendons from stress and wear.

Explanation

To find the area of the strip:

1. Calculate the area of the larger rectangle (including the strip):

New length = 82 + 2_4 = 90 cm

New width = 75 + 2_4 = 83 cm

Area of larger rectangle = 90 * 83 = 7470 cm²

2. Calculate the area of the original rectangle:

Area = 82 * 75 = 6150 cm²

3. Find the area of the strip:

Area of strip = Area of larger rectangle - Area of original rectangle

= 7470 - 6150

= 1320 cm²

Explanation

Upthrust (or buoyant force) happens only when a body is physically in contact with a liquid.

Electrostatic magnetic force between two magnets, and gravitational forces act at a distance without contact.

Explanation

Red Blood Cells (RBCs) are disc-shaped with a central depression (biconcave), not irregular in shape.

Their regular shape helps efficient oxygen transport throughout the body.

Explanation

In a root system, the cortex lies between the epidermis (outer layer) and the vascular bundle (xylem and phloem).

It mainly functions in storage and transport of water and nutrients.

Explanation

Volt × Ampere = Watt, which measures electrical power.

Watt is the SI unit of power in an electric circuit.

Explanation

CaCO₃ → CaO + CO₂ is an endothermic reaction because it absorbs heat to decompose calcium carbonate.

Exothermic reactions (like combustion reactions) release heat to the surroundings.