181.Which quantum number divides shells into orbitals?
- A. Principal
- B. Azimuthal
- C. Magnetic
- D. Spin
182.The major source of oxides of nitrogen is from the burning of
- A. Coal
- B. Wood
- C. Fuel
- D. Chlorofluorocarbons
183.Cotton is almost a pure
- A. Starch
- B. Protein
- C. Animal fibre
- D. Cellulose
184.Lucas reagent is used to test for
- A. Alkanes
- B. Alkanoic acids
- C. Alkanols
- D. Amines
185.An element X forms the following compounds with chlorine XCl₄, XCl₃, XCl₂. This illustrate the
- A. Law of multiple proportions
- B. Law of definite proportions
- C. Law of conservation of mass
- D. Law of chemical proportions
186.The molecular formula of a common organic laboratory anaesthetic is
- A. CHCl₃
- B. CHl₃
- C. CCl₄
- D. CHF₃
187.Organic molecules that have the suffix – ene are unsaturated hydrocarbons that have
- A. A single bond
- B. Double bond
- C. A triple bond
- D. An ionic bond
188.Copper metal dissolves in concentrated trioxonitrate(v) acid with the resultant evolution of
189.Which of the following is not a member of the homologous series of the paraffins?
- A. C₃H₈
- B. C₅H₁₂
- C. C₁₅H₃₂
- D. C₂₄H₄₈
190.Element P, Q, R and S have 6, 11, 15 and 16 electron respectively, therefore
- A. P will form anionic bond with R
- B. R will form an electrovalent bond with S
- C. Q will form a covalent bond with S
- D. Q will form an electrovalent bond with S
191.A gaseous mixture of 80.0g of oxygen and 56.0g of nitrogen has a total pressure of 1.8atm. The partial pressure of oxygen in the mixture is
- A. 0.8atm
- B. 1.0atm
- C. 1.2atm
- D. 1.4atm
192.Palm wine turns sour with time because
- A. The sugar content is converted into alcohol
- B. The CO2 formed during the fermentation process has a sour taste
- C. It is commonly adulterated by the tappers and sellers
- D. Microbiological activity results in the production of organic acids within it
193.Alkanals can be differentiated from alkanones by reaction with
- A. 2, 4 – dinitrophenylthydrazine
- B. Hydrogen cyanide
- C. Sodium hydrogen sulphide
- D. Tollen’s reagent
194.The following are uses of sulphur except
- A. Vulcanization of rubber
- B. Manufacture of dyes
- C. Coating of steel to prevent rusting
- D. Manufacture of tetraoxosulphate(VI) acid
195.Catalytic hydrogenation of benzene produces
- A. An aromatic hydrogenation
- B. Margarine
- C. Cyclohexane
- D. Benzene
196.The oxidation number of chlorine is +1 in
- A. KClO₂
- B. Cl₂O
- C. ZnCl₂
- D. NaClO
197.The carbon atoms on ethane are
- A. S hybridised
- B. SP hybridized
- C. SP³ hybridised
- D. SP²d hybridized
198.At 25⁰C and 1 atm, a gas occupies a volume of 1.50 dm³. What volume will it occupy at 100⁰C and 1 atm?
- A. 1.88dm³
- B. 6.00dm³
- C. 18.80dm³
- D. 60.0dm³
199.A current of 4.0 amperes was passed through copper (ll) tetraoxosulphate (IV) solution for one hour using copper electrodes. What was the mass of copper deposited? (Cu = 64, 1F = 96500 C)
- A. 3.2g
- B. 4.8g
- C. 6.4g
- D. 9.6g
200.Pauli exclusion principle is related to
- A. Quantum numbers of electrons
- B. Reversibility of equilibrium reactions
- C. Electro negativity values of elements
- D. Collision theory of reactions rate