Answer:
Standard temperature is exactly (C) 0ºC
Step-by-step explanation:
STP means standard temperature pressure at which 
T = 0℃ or 273K and Pressure = 1 atm 
NTP means Normal temperature pressure which means room temperature and pressure at which 
T = 20℃ or 293 K and Pressure = 1 atm 
SATP means standard Ambient temperature pressure at which 
T = 25℃ or 298K and P = 1atm 
In tropical countries, the climate will be warm and hence room temperature usually considered as
T = 25℃ or 298K and P = 1 atm 
Lab temperature is same as that of room temperature.