Update Questions and Answers.md

paramphy · Jul 22, 2021 · 5be7242 · 5be7242
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  - **Write down the pin diagram of the sensor LM 35.**
 ---
  - **Write a program to turn on built in LED of the arduino Uno for 1 sec and off for 1 sec.**
+ 
    program to turn on built in LED of the arduino Uno for 1 sec and off for 1 sec.
 ```c++
 /*Blink