100% Solved
Sublimation is the change of matter
From:
a. A gas to solid
b. A liquid to solid
c. A liquid to gas
d. A solid to gas D. A solid to gas
Which of the following belongs to the
Science of chemistry?
A. The alterations of the structure of
Molecules
b The condensation of vapour
c The conduction of electricity along a wire
D. The production of rays in the envoirnment A The alterations of the
Structure of molecules
An atom is electrically neutral because?
A. More protons than electrons
B. More elections than protons
,C. Has the same number of protons
d has the same number of protons and electrons. D. Has the same number
Of protons and elections
A substance which chemically cannot
Be broken down into simpler substances is called?
A. A compound
b. An element
C. A mixture
D. An emulsion B. An element
Which of the following chemicals
Consists mainly of hydrocarbons?
A. Mineral oil
b. olive oil
C. Almond oil
D. Lavender oil A mineral oil
The safety practices that should be
Observed in a beauty salon when
Using electrical appliances:
A. are according to international regulations for all enterprises
, B. Are established by CEDSCOInternational
C. Are established by local authorities
D. Are the responsibility of employer of the salon C. Are established by the local
authorities
A human cell with 22 autodomes and a Y chromosome would be
A. .hair follicle
b. sperm
C. Ovum
D. zygote B. Sperm
When a cell is dividing, the nucleus forms.
A. Chromosomes.
B. Centrioles
C. Cell membrane
D. Cytoplasm A .chromosomes
What type of connective tissue is found in the wall of an artery ?
A. Reticular
B areolar
c collagen
d. Elastin Elastin