You can get a rough idea of a star's temperature by its color. A detailed analysis of the spectrum can give additional information.
Infrared Rays are easily detected...
Yes , nicotine is easily detected by modern means .
In the arteries
Temperature amd pressure
The correct answer to this question is the "neck".
Yes. We have detected gas giants orbiting very close to their stars.
Yes
Valium and other benzodiazapines are easily detected in urine.
the color of stars with the lowest surface temperature is red
Error can be easily detected in digital.
No, pencils do not emit strong odors that can be easily detected by sniffing.
Red stars have the coolest surface temperature while blue stars have the highest surface temperature. NERD!