The National Assembly adopted the 26th Constitutional (Amendment) Bill, 2019 on 13th May, making that the correct adoption date.

The National Assembly passed the federal budget for FY 2019-2020 on June 28.

Chandrayaan-2 was launched on 22 July 2019.

Passed in March 1949, setting Islamic principles for Pakistan’s constitution, per historical records.

Duplicate of Q15. Nanocomposites protect against environmental factors (Journal of Food Engineering).

Duplicate of Q2. Microphones convert sound to electrical audio signals (audio engineering sources).

Nanocomposites enhance packaging barriers against moisture, heat, and other environmental factors (including flood and fire damage), per food technology research (e.g., Journal of Food Engineering).

Machine learning is a subset of AI, focusing on data-driven algorithms, distinct from hardware engineering or cyber forensics, per AI texts (e.g., “Artificial Intelligence: A Modern Approach”).

A microphone converts mechanical sound waves into an electrical audio signal, as confirmed by audio engineering references (e.g., “Fundamentals of Audio Engineering”).

A step-up transformer increases voltage by having more turns in the secondary coil than the primary, as per transformer principles in standard physics texts (e.g., Halliday & Resnick).