Soaps were originally made from___________ .

(a)

proteins

(b)

animal fats and vegetable oils

(c)

chemicals extracted from the soil

(d)

foam booster

The saponification of a fat or oil is done using _______________ solution for hot process.

(a)

Potassium hydroxide

(b)

Sodium hydroxide

(c)

Hydrochloric acid

(d)

Sodium chloride

Gypsum is added to the cement for_______.

(a)

fast setting

(b)

delayed setting

(c)

hardening

(d)

making paste

Phenol is ______.

(a)

carbolic acid

(b)

acetic acid

(c)

benzoic acid

(d)

hydrochloric acid

Natural adhesives are made from ________.

(a)

Protein

(b)

fat

(c)

starch

(d)

vitamins

Chemists identify turmeric powder as a ______________ 

(a)

natural indicator

(b)

chemical change

(c)

physical change

(d)

chemistry

_______________ results in the change of the substance;

(a)

Natural indicator

(b)

Chemical change

(c)

Physical change

(d)

Chemistry

In _________________ only the shape, size or volume changes.

(a)

Natural indicator

(b)

Chemical change

(c)

Physical change

(d)

Chemistry

___________________ is the branch of science which deals with the study of particles around us.

(a)

Natural indicator

(b)

Chemical change

(c)

Physical change

(d)

Chemistry

_____________ is a soft white or grey, naturally available mineral.

(a)

Gypsum

(b)

Chemical change

(c)

Physical change

(d)

Chemistry