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Ondo State 2018 Joint SS2 Exam Chemistry (OBJ And Theory) Answers Expo
Views: 3040  |  Comments: 0 |  Posted: 07:16 Wed, 11 Jul 2018
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Posted on: 07:16 Wed, 11 Jul 2018


CHEMISTRY OBJ:
.1-10:ACDBDBBBCD
11-20:ADBBBCADBD
21-30:AADBCDABDA
31-40:CABCCDCADB
41-50:DCBDDADACD
=•=•=•==•=•==•=•==•=•==•=

CHEMISTRY THEORY:

(1a)
Law of conservation of mass states that energy cannot neither be created nor destroy but changed from one form to another.

(ci) Biotechnology is the use of living systems and organisms to develop or make products, or "any technological application that uses biological systems, living organisms, or derivatives thereof, to make or modify products or processes for specific use.

(cii)
Biogas is a renewable energy that is gotten from the waste product material

(ciii)
Heavy Chemical are chemical that is manufactured in lager quantities and are required in large quantities in industry
e.g Ammonia, Sodium hydroxide etc…

============================

(3bi)
(i)NaHCO3 – Sodium hydrogen – trioxocarbonate (iv)

(ii)

(iii) KMnO4 – Potassium
Tetraoxosulphate (iv)

(iv) H2C= C(CL)CH =CH2
2- Chlorobuta 1,3-diene

(3c)

(i) Cemment – Calcium oxide and clay

(ii) Glass – Sand, soda, line

(iii) Ceramics – Silica and oxides of magnesium ;Aluminum

++++++++++++++++++++++++++++++++

(4)

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