TMA

TMA4/CHM102 – INTRODUCTORY PHYSICAL CHEMISTRY

TMA Quiz Questions

TMA: TMA4/CHM102
CHM102 – INTRODUCTORY PHYSICAL CHEMISTRY
Dr. Aletan Uduak (ualetan@noun.edu.ng )

1 ____________is a cleavage reaction, i.e a reaction in which the double bond is completely broken and alkene molecule is converted into two smaller molecules.

A. Ozonolysis  
B. Pyrolysis
C. Chelation
D. Carbonification

2 Treatment of organoboranes with a carboxylic acid leads to___________.

A. Alkynes
B. Alkane  
C. Boronc acid
D. Phenolic acid

3 When an alkene reacts with borane, addition to the carbon-carbon double bond takes place to yield an ______________.

A. metallo borane
B. hydroborane
C. organoborane  
D. dihydroborane

4 Synthetically, alkenes are prepared by introducing a double bond in saturated hydrocarbons through _____________of atoms or groups from two adjacent carbon atoms.

A. substitution
B. elimination  
D. addition
E. Oxidation

5 Which of the following statements regarding alkanes is not true

A. Alkanes are non-polar molecules
B. Alkanes are soluble in water  
C. Alkanes experience dispersion forces
D. Alkanes have low boiling points

6 _______________reaction is applicable to aldehyde andketones and leads to replacement of carbonyl oxygen by the group=CRR’ (where R and R’ are hydrogen or alkyl group).

A. Wittig  
B. Wurtz
C. Sabatier Senderen’s
D. Fischer-Tropsch

7 In __________ reactions of alkene, the pie -bond is broken and the electron pair comprising it, is used in the formation of two new sigma bonds.

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A. Substitution
B. Addition  
C. Elimination
D. Oxidation

8 Dehydrohalogenation follows ____________ rule which says that the more highly substituted alkene is the dominant product.

A. Markinowoffs
B. Clemmensons
C. Saytzeff  
D. Fischer

9 In ____________ reaction, a conjugated diene is treated with an unsaturated compound called the dienophile (diene-lover) to yield, a cyclic system.

A. Diels-Alder  
B. Retro Diels-Alder
C. Wittig
D. Wurtz

10 ______________ rule, which states that addition of a hydrogen halide to an unsymmetrical alkene takes place in such a way that the negative part of the reagent goes to that carbon atom of the alkene which carries the lesser number of hydrogen atoms.

A Saytzeff
B. Fischer
C. Clemmensons
D. Markinowoffs  

11 In theIUPAC system of nomenclature, aldehydes are named as _________________.

A. Ethers
B. Alkanals  
C. Alcohols
D. Ketones

12 The reaction of propane with bromine is called?

A. Elimination
B. Addition
C. Halogenation  
D. Oxidation

13 The functional group contained in the compound CH2=CH2 is an

A. ether
B. ester
C. alkene  
C. alkane

14 The molecular formula of __________ fit the general formula (CnH2n-2).

A. Alkynes  
B. alkanes
C. alchohols
D. alkenes

15 Terminal alkynes on hydroboration give _________.

A. Alkanes
B. Ketones
C. Alkyl halides
D. Aldehydes  

16 The following are methods of preparation of acetylene EXCEPT ___________.

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A. Acylation of ethyne  
B. Alkylation of ethyne
C. Dehydrohalogenation of dihalides
D. Dehalogenation of tetrahalide

17 The lobes of
Sp3
Sp3
are separated by ________

A. Orbital
B. Node  
C. Antinode
D. None of the above

18 The number of hybrid orbitals generated is determined by __________ combined.

A. Number of shells
B. Number of protons
C. Number of atomic orbitals  
D. Number of electrons

19 The catalyst required for the hydrogenation of unsaturated hydrocarbons at moderate temperature and pressure is__________

A. Palladium  
B. Nickel
C. Vanadium v Oxide
D. Iron

20 1-hexyne can itself be converted into an alkynide anion, and can be alkylated a second time to yield an __________ alkyne.

A. interim
B. internal  
C. terminal
D. external

 

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