Learn more about the properties, composition, and structure of substances (elements and compounds) with these Chemistry questions and answers. This Test can be used by students preparing for Chemistry in JAMB, WAEC, NECO or Post UTME.
a reducing agent
a dehydrating agent
a drying agent
an oxidizing agent
Correct answer is A
- As a reducing agent, Ammonia reacts with chlorine to create nitrogen gas and hydrogen chloride vapour in the first step.
activation energy of the reaction
rate of the reaction
rate of the reverse reaction
heat of reaction
Correct answer is D
No explanation has been provided for this answer.
Which of the following reagents could be used to distinguish between propan-1-ol and propan-2-ol
H+ / K2Cr2O7
I\(_2\) / OH-
CH\(_3\)COOH
NaCl
Correct answer is A
when a primary alcohol like ethanol is warmed with excess of an oxidizing reagent, such as acidified Potassium permanganate( KMnO₄) or acidified Potassium dichromate(VI) ( K2Cr2O7 ), it is oxidized first to ethanal then to ethanoic acid, WHILE
Secondary alcohols like butan-2-ol will be oxidized to alkanones
propan-1-ol - primary alcohol,
propan-2-ol- secondary alcohol
- The Lucas test in alcohols is a test to differentiate between primary, secondary, and tertiary alcohols. It is based on the difference in reactivity of the three classes of alcohols with hydrogen halides
When excess chlorine is mixed with ethane at room temperature, the product formed is?
1,2-dichloroethane
1,2-dichloroethene
1,1-dichloroethane
1,1-dichloroethene
Correct answer is A
- The chemical compound 1,2-dichloroethane, commonly known as ethylene dichloride (EDC), is a chlorinated hydrocarbon
C\(_3\)H\(_8\)O
C\(_6\)H\(_12\)O
C\(_6\)H\(_12\)O\(_2\)
C\(_12\)H\(_12\)O\(_11\)
Correct answer is B
C = 72 / 12 H = 12 / 1 O = 16 / 16
C = 6 H = 12 O = 1
: EMPIRICAL FORMULA
C\(_6\)H\(_12\)O