FBQ1: Numerical value of the universal gas constant in J/K/mol is ------------- Answer: 8.314 FBQ2: The reaction between an organic acid and an alcohol to yield an ester is known as__ Answer: Esterification FBQ3: An ester that is capable of exerting a banana aroma is likely to be _____ Answer: isoamyl acetate FBQ4: The product of further oxidation of aldehyde is___ Answer: Carboxylic acid FBQ5: The product of oxidation of secondary alcohol in the presence of acidic K2Cr2O7 is__ Answer: Ketone FBQ6: Forensic and drug analysis can be effectively carried out using appropriate choice of _________ instrument Answer: Chromatography FBQ7: In order to convert temperature values from Celsius to Kelvin unit, the necessary equation is ________ Answer: K = °C + 273 FBQ8: A body of mass, m absorbed Q J amount of heat. If the change in temperature is DT, the equation for calculating the specific heat capacity, C of the mass is ______ Answer: C = Q/mDT FBQ9: The relationship between the unit of energy in Calories and in Joule is _____ Answer: 1 cal = 4. 184 J FBQ10: The heat of neutralization of strong acid by strong base is approximately constants for all acids and bases because strong base and strong acids undergoes __________ Answer: Complete ionization FBQ11: An equation that can be used to calculate the number of degree of freedom (i.e F) of a phase system having C component and P number of phase can be written as _______ Answer: F = C-P + 1 FBQ12: The volume occupy by 1 mole of a gas at stp is called ______ Answer: Molar volume FBQ13: The results of calculation of the volume (in dm3) occupy by 16 g of oxygen gas at stp is _______ Answer: 22.4 dm3 FBQ14: Chemical reactions that generates poisonous gases can best be prepared under a ______ Answer: Fume cupboard FBQ15: As the molecular weight of organic compounds increases, the boiling point ______ Answer: Increases FBQ16: The function of wearing hand cloves during laboratory experiment is to prevent direct contact with _____ Answer: Chemicals FBQ17: The pka of an acid whose ionization constant (ka) is 0.001 is numerically equal to ____ Answer: 3 FBQ18: An equation that related depression of freezing point to molecular mass can be written as _______ Answer: DT = kfm FBQ19: Tollen’s reagent consist of a basic (OH-) solution of ________ Answer: Copper (II) citrate FBQ20: Tetraoxosulphate (VI) acid is a very corrosive acid and can better be stored in a ____ container Answer: Bottle FBQ21: An ester characterised by pineapple odour can best be prepared by combining ethyl alcohol and ___ in the presence of a mineral acid Answer: Butyric acid FBQ22: The chemical formula of the product generated from the interaction of RCOH with oxygen from air is ___________ Answer: RCOOH FBQ23: In the course of carrying out titration analysis to determined percentage vinegar in a fruit juice, colourless vinegar preferably yields better endpoint because less _______ in the observation of the endpoint Answer: Interference FBQ24: It is better to repeat a titration analysis upto _______because error will be reduced when average value is taken Answer: Three time FBQ25: Prior to measuring pH, the pH meter should be calibrated using ­­­­____ solutions Answer: Buffer FBQ26: Rf value is a response parameter to thin layer chromatography while ______ is a response value to gas chromatography Answer: retention time FBQ27: The basic reagent that can be used to test for the presence of double bond is ____ solution Answer: Potassium permanganate FBQ28: ­­____ reagent will essentially oxidized aldehyde to carboxylic acid and copper (I) oxide Answer: Benedict FBQ29: If the negative logarithm of hydroxyl concentration of a solution is y, the pH of that solution can be expressed as ___________ Answer: 14-y FBQ30: Column chromatography can be applied by chemist to ____________ substances Answer: purify impure FBQ31: The pump in a high performance liquid chromatography functions in ___________ Answer: pumping solvent FBQ32: Peak area and peak height in chromatogram are commonly applied to ____________ Answer: estimate concentration FBQ33: In paper and thin layer chromatography, the ratio of the distant travelled by the solute to the distant the solvent moves is called ____________ Answer: Rf value FBQ34: Titration analysis to determine the concentration of acetic acid in a solution can be achieved by titrating the solution with standardised ____ Answer: NaOH FBQ35: [H+] [OH‾] = 1.0 x 10 -14 pH + pOH = Y. What is the missing term in the equation Answer: 14 MCQ1: The commonest method of introducing unsaturation into an organic compound is __ Answer: Dehydration MCQ2: Which of the following compounds (of comparable molecular weight) will be most soluble in water Answer: Carbohydrate MCQ3: Which of the following factor will limit the solubility of primary, secondary and tertiary amines Answer: The presence of more than more phenyl group on the amine nitrogen MCQ4: One of the following may not be necessary to be observed in the laboratory Answer: Do not talk or ask question when carrying out experiment MCQ5: Solubility of organic compounds can be affected by all except one of the following Answer: None of the options MCQ6: Which of the following organic compound is expected to have the highest boiling point Answer: C4H10 MCQ7: Which of the following reagent is not best for use in testing for the presence of phenol Answer: Potassium permanganate MCQ8: Which of the following is not unique reagent for the presence of alcohol test? Answer: Millions reagent MCQ9: 2,4-dinitrophenylhydrazine test is best suitable to test for the presence of .. Answer: Ketones MCQ10: Benedict test is not suitable reagent for the presence of …. test Answer: Aldehyde MCQ11: Which of the following pH value signifies a very strong base Answer: 14 MCQ12: The hydrogen ion concentration of a solution is 0.0001 M. calculate the pH of the solution Answer: 4 MCQ13: The concentration of hydrogen ion of a solution is 0.001 M. Calculate the pOH of the solution Answer: 11 MCQ14: The pH of unripe fruit may likely assume a value of___ Answer: 5 MCQ15: The freezing point of a non-volatile electrolyte is depressed by 4 K. If the molar mass of the solute is 16 g/mol, calculate the freezing point depression constant Answer: 0.25 K/mol MCQ16: The concentration of a solute in solvent A is 0.2 M while its concentration in solvent B is 0.4 M. Calculate the partition function of the system Answer: 0.50 MCQ17: Convert 5 °C to °F Answer: 41 °F MCQ18: Convert 9 °F to °C Answer: 21 °C MCQ19: Convert 0.5 Cal of energy to energy in Joules unit Answer: 2.092 J MCQ20: Why does the heat of neutralization of a strong acid by a strong base always assume a constant value, irrespective of the acid Answer: They undergo complete neutralization MCQ21: If the amount of heat absorbed by a substance is 546 J at a temperature of 273 K, calculate the heat capacity of the substance Answer: 2 J/K MCQ22: A three component system has two phases, calculate the number of degree of freedom for the system Answer: 1 MCQ23: The temperature of one mole of an ideal gas was measured as 100 K. calculate the product of pressure and volume of the gas Answer: 831 J/mol/K MCQ24: The pressure of 10 m3 of a gas was measured as 21 Pa. calculate the value of the gas constant. Answer: 21 MCQ25: Which of the following parameters cannot be experimentally estimated through Boyle’s law Answer: Temperature MCQ26: In an experiment, the temperature of a fixed mass of a gas was measured as 100 K. If the volume of the gas was 10 m3, calculate the constant of proportionality  Answer: 0.10 MCQ27: Aluminium metal melts at 660.37°C.What is the temperature in Kelvin? Answer: 933.52 MCQ28: Aldehydes and ketones have all the under listed features except; Answer: Aldehyde and ketone are non-polar compounds MCQ29: Ketones differ from aldehydes because _____ Answer: Ketones always has two alkyl group attached to the carbonyl group but aldehyde has a hydrogen atom in addition to one alkyl group MCQ30: Acetone has all these applications except; Answer: Used as a preservative for wine MCQ31: Aldehydes are easily oxidized probably because of one of these reasons. Answer: Due to the presence of the hydrogen attached to the carbonyl group MCQ32: One of these is not an important application of chromatographic techniques  Answer: Cannot be used in forensic work MCQ33: Which of these is not a basic chemical reaction in organic chemistry? Answer: Carbocation reaction MCQ34: Which of these elements can be determined by Lassaigne's fusion test? Answer: Na MCQ35: Which colour of precipitate is formed when highly conjugated aromatic aldehydes reacts with 2, 4-Dinitrophenylhydrazine? Answer: Red