Which of the following pH values indicates that a solution is a strong base?

• A. 1
• B. 5
• C. 9
• D. 13

Which of the following substances would not produce ethanol when fermented?

• A. Cane sugar
• B. Glucose
• C. Starch
• D. Vinegar

The hydrolysis of NH₄CI gives

• A. an acidic solution
• B. an alkaline solution
• C. a buffer solution
• D. a neutral solution

Consider the following reaction equation: C16H34 → C5H12 + C11H22. The process represented by the equation is

• A. cracking
• B. fermentation
• C. polymerization
• D. reforming

The d-block elements are paramagnetic because they

• A. contain paired electrons which are repelled by magnetic field
• B. contain unpaired electrons in the partially filled 3d-orbital
• C. contain paired electrons which are repelled by magnetic field force
• D. have delocalized valence electrons

A spot of oil paint on a shirt can best be removed using

• A. brine
• B. detergent
• C. kerosine
• D. warm water

Which of the following electron configurations represents that of an atom in its ground state?

• A.1s₂2s₁2p₁
• B. 1s₂2s₂2p₆3s₁3p₁
• 1s₂2s₂2p₃
• D. 1s₂2s₂2p₆3s₀

Which of the following devices function on redox reaction? l. Dry cell ll. Car battery III. Electric generator

• A. l and lll only
• B. ll and lll only
• C. l and ll only
• D. l, ll and lll

The postulate that molecules are in constant random motion best explains why liquids

• A. can undergo solidification
• B. maintain their volumes
• C. are incompressible
• D. have no characteristic shape

(a) (i) What is a structural isomer?

(ii) Write all the structural isomeric alkanols with the molecular formula C\(_4\)H\(_{10}\)O.

(iii) Which of the isomers from (a)(ii) above does not react easily on heating with acidified K\(_2\)Cr\(_2\)O\(_7\)?

(b) Chlorine reacted with excessentane in the presence of light. Chloropentane and a gas which fumes on cont with air were produced.

(i) Write an equation for the reaction.

(ii) Draw the structure of the major product.

(iii) What is the role of light in the reaction?

(iv) If a mixture of pentane and the major product is heated, which compounc would distil off first? Give a reason for your answer.

(v) Write the formula of the main product that would have be formed if but -1-ene has been used instead of pentane.

(c) Give the name and structural formula of the product which would be formed by hydration of each of the followinc compounds:

(i) CH\(_3\)CH(CH\(_3\))CH=CH\(_2\); (ii) CH\(_2\)=CHCOOH.

(d) (i) Write the structure of the amino acid, CH\(_3\)CH(NH\(_2\))COOH in: I. acidic medium; II. alkaline medium.

(ii) On analysis, an ammonium salt cf an alkanoic acid gave 60.5% carbon and 6.5% hydrogen. If 0.309 g of the salt yielded 0.0313 g of nitrogen, determine the empirical formula cf the salt. [H = 1.00; C =12.0; N =14.0; O = 16.0]