- In 1954, USA launched its first atomic submarine, what was its name?
- What was the title of Hazret Khalid Bin Walid ?
- “Omithology” is the study of:
- An ordinary mobile phone communicates by using ?
- Acoustics is the study of ?
- A mobile phone sends and receives messages through
- Decibel is a unit uses for:
- velocity of sound in air ?
- Lion is the national emblem of:
- An ordinary mobile phone communicates by using:
- Texidermy is the art if stuffing of birds and animals and Philately is
- Decibel is the unit used for ?