Plus, the SDA pin of the RTC is at 5V when the Vcc pin of the RTC is connected to 5V. Is this normal? I am thinking if I have burnt this RTC chip while doing soldering.
I think the SDA pin of the RTC is disturbing the I2C communication to Boarduino because EEPROM could communicate with Boarduino without connecting to SDA pin of the RTC.