What is a red-lipped batfish ?

What is red shift ? What does it indicate ?

A diffraction is obtained by using a beam of red light. What will happen if the red light is replaced by the blue light?

If blue is called red, red is called green, green is called bleck and black is called white, what is the colour of grass (a) red (b) black ( C ) white (d) green

what is obtained when acetic acid is heated with chlorine in presence of red phosphorus?

What is red snow phenomenon ?

What is Red Data Book ?