Chemistry is the study of the substances that make up matter. It looks at their properties, how they react with each other, and how these reactions can create new substances.
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Question 361: Which of the following compounds is composed of Al, Si, O and H?
Options:
A) Epsom salt
B) Limestone
C) Clay
D) Urea
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The correct answer is C .
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Question 362: Dynamic equilibrium describes a situation where
Options:
A) a reaction gives back the reactant
B) te concentration of the reactant and products is equal
C) both forward and and reverse reactions proceed at the same rate
D) reactants are converted to products
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The correct answer is C .
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Question 363:
CH3 - CH2 - C CH
The hybridization in the compound above is
Options:
A) Sp2
B) sp
C) sp3 and sp2
D) sp3 and sp
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The correct answer is D .
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Question 364: The petroleum fraction that is used in heating furnaces in industries is
Options:
A) diesel oil
B) gasoline
C) kerosene
D) lubricating oil
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The correct answer is A .
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Question 365:
Copper sulphate solution was electrolysed using the apparatus show above. Which of the following changes are observed?
Options:
A) The bulb lights and copper is deposited at both electrodes
B) the bulb lights and copper is deposited at the anode and disappears from the cathode
C) the bulb lights and copper is deposited at the cathode and oxygen liberated at the anode
D) the bulb lights and copper is deposited at the cathode and disappears from the anode
E) the bulb lights but no additional changes are observed
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The correct answer is D .
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Question 366: The principal constituent of natural gas is
Options:
A) methane
B) ethane
C) propane
D) butane
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The correct answer is A .
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Question 367:
The compound above exhibits
Options:
A) geometric isomerism
B) optical isomerism
C) structural isomerism
D) positional isomerism
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The correct answer is B .
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Question 368:
Which of the following gases can best be used for demonstrating the fountain experiment?
(iv) Hydrogen chloride.
Options:
A) ii and iii
B) i and iii
C) ii and iv
D) ii only
E) Nitrogen (ii) Ammonia (iii) Nitrogen (I) oxide
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The correct answer is C .
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Question 369:
Select the right answer from the structure above.Which of the following compounds represents the polymerization product of ethyne?
Options:
A) A
B) B
C) C
D) D
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The correct answer is A .
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Question 370: Which of the following metals is purified commercially by electrolysis?
Options:
A) Zn
B) Fe
C) Sn
D) Cu
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The correct answer is D .