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SUBJECT= CHEMISTRY
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B⃣ Sulphur dioxide
C⃣ Phosphine
D⃣√ Ammonia
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2) Which one of the following is not a constituent of stainless steel?
A⃣ Chromium
B⃣√ Carbon
C⃣ Nickel
D⃣ Tin
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B⃣ Copper, nickel and zinc
C⃣ Silver, tin and zinc
D⃣√ Silver, nickel and zinc
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B⃣√ Phosphorus trichloride
C⃣ Graphite
D⃣ Mercuric oxide
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B⃣ Chemical reaction
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C⃣ Triple Bonds
D⃣ Two Double Bonds
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A⃣ sodium sulphate
B⃣ sodium sulphite
C⃣ sodium oxalate
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B⃣ Far
C⃣ An alkane
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2017 WAEC GCE BIOLOGY PRACTICAL ANSWERS

Bio pract ans by mr.coded

 

Bio-Pract-Ans

1ai) Pectoral Girdle(Scapula

1aii) I-Scapula

II-Spine of scapula

III-Covacord process

IV-Acronium Process

V-Gleniod cavity

VI-Metacronium process

4a)

I)Operculum

II)Hind limb

III)Tympanum

IV)Trunk

V-eye

VI-lateral line

VII-dorsal fin

VIII-caudal fin

4bi)

Tabulate

Vertebra

i)they are poikilothermic or cold-blooded animal

ii)they have fins which are used for movement in water

iii)they have naked or moist and glandular skin with no external scales

iv)they do not show parental care

v)they have a two chambered heart

Vertebrate B

i)they are aquatic animal

ii)they have gills which used for gaseous exchange

iii)the skin is covered by scales but few are with out scale

iv)they show parental care for young onces

v)they have three chambered heart

4bii)

i)they both posses scale

ii)they both posses eyes

iii)they both posses respiratory organs

4ci)

A-amphibian

B-pisces

4cii)

i)they posses fins which are used for movement

ii)they posses swim bladder which posses swim bladder which enables them to maintain buoyancy in water

iii)they posses lateral line system for detectin of vibration

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Posted by on September 9, 2017.

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