What is added to the dye bath to improve the colour fastness?
solvent
mordant
dye
binder
Chemicals occuring mostly in the seeds and roots of certain plants are
hormones
alkaloids
pigments
terpenes
The solvent which comes from petroleum is?
industrial paints
enamel paints
acrylic emulsion
oil based paints
What is the gaseous part of earth crust?
lithosphere
hydrosphere
atmosphere
mantle
The cement is mixed with gravel and sand to form
limestone
clay
mud
concrete
The solid part of the earth crust is
Lithosphere
A modern, life saving antibiotic is?
penicillin
quinine
atropine
nicotine
A substance which can be formed by synthetic method from a simple substance and which can be moulded or given any shape is called
Plastic
Cement
glass
A complex mixture of silicates used to make pottery is
Glass
Which contain antibodies rather than substances that cause the body to produce antibodies?
Vaccine
antiserums
antibiotics
sulfa drugs
