Question : Litmus is obtained from

Option 1: a bacterium 

Option 2: a fungus 

Option 3: an alga

Option 4: lichen

Question : Trinitrotoluene is

Option 1: Used to melt metals

Option 2: Used to fuse two metals

Option 3: Used as an abrasive

Option 4: Used as an explosive

Question : Parts of the following sentence are given as options. Identify the segment that contains a grammatical error.

A lot of food we serve are wasted.

Option 1: are wasted

Option 2: we serve

Option 3: A lot

Option 4: of food

Question : Select the option that can be used as a one-word substitute for the given group of words.
Animal living both on land and water.

Option 1: Marine

Option 2: Amphibian

Option 3: Arboreal

Option 4: Terrestrial

Question : Identify the organism that is not a pseudocoelomate.

Option 1: Ancylostoma

Option 2: Ascaris

Option 3: Wuchereria

Option 4: Scorpions