Arduino boards are primarily based on which type of microcontroller?

Which Arduino board is most commonly used by beginners?

What is the clock speed of the Arduino Uno?

Which programming language is primarily used in Arduino IDE?

Which command is used to set pin mode in Arduino?

The serial communication default baud rate for Arduino is

The Arduino Uno has how many digital I/O pins?

Which sensor measures distance using ultrasonic waves?

The voltage range for Arduino Uno analog input is

Which memory type stores the Arduino bootloader?