Which of the
following is/are present in toothpaste to neutralize the acidity?
a) acids
b) alkali
c) salts
d) all of these
Which of the following you use in making your own toothpaste?
a) glycerin
b) baking soda and peppermint oil
c) salt
d) all of these
Which of the following is NOT used in making toothpaste?
a) glycerine
b) vinegar
c) baking soda
d) a pinch of salt
Soap:
The first detergent (or surface-active agent) was soap. In a strictly chemical sense, any compound formed by the reaction of a water-insoluble fatty acid with an organic base or an alkali metal may be called a soap. Practically, however, the soap industry is concerned mainly with those water-soluble soaps that result from the interaction between fatty acids and alkali metals. In certain cases, however, the salts of fatty acids with ammonia or with triethanolamine are also used, as in shaving preparations.
Which of the following when dissolve in water and produce lather that can remove dirt from skin, cloths and other solids?
a) soaps
b) toothpastes
c) detergents
d) all of these
Which of the following is also called ‘lye’?
a) NaOH
b) KOH
c) LIOH
d) Al(OH)3
Explanation:Sodium hydroxide, also known as lye and caustic soda, is an inorganic compound with the formula NaOH. It is a white solid ionic compound consisting of sodium cations Na⁺ and hydroxide anions OH⁻.
