Explanation

Meiosis reduces the chromosome number by half, forming haploid cells (e.g., gametes).

This ensures that during fertilization, the diploid number is restored in the offspring.

Explanation

The Berlin Wall was built in 1961 by East Germany to stop mass defections to the West.

It became a symbol of the Cold War division between communist East and capitalist West.

Explanation

20% of 180 = (20/100) × 180

= 0.2 × 180

= 36

Explanation

Meter is the SI unit of length.

It is used to measure distance or height.

Explanation

When white light passes through a prism, it is refracted, or bent, and split into its individual colors, a process known as dispersion.

The order of deviation is:

• Violet (most deviated)
• Blue
• Green
• Yellow
• Red (least deviated)

Explanation

Gamma radiation is the most dangerous type of radiation.

it has high energy and can penetrate most materials, including human tissue.

It is highly penetrating and can cause significant biological damage.

Explanation

The CPU (Central Processing Unit) is responsible for processing data, not for long-term storage.

Permanent storage is handled by devices like hard drives or SSDs, not the CPU.

Explanation

Assembly language is a low-level language that uses mnemonics to represent machine-level instructions.

It is hardware-specific and closer to binary code, offering more control over hardware.

Explanation

A CD (Compact Disc) is read using a laser beam in an optical drive.

The laser detects tiny pits and lands on the disc surface to read data.

Explanation

Pakistan has a federal parliamentary system, where powers are shared between the federal government and provinces.

The Prime Minister is the head of government, elected by the National Assembly.