FBQ1: ________ is a place equipped for investigative procedures and for preparation of reagent. Answer: laboratory FBQ2: How many moles of glucose are present in 180g ______ Answer: 1 FBQ3: ________ is due to human incompetence which can and must be eliminated Answer: Mistake FBQ4: _____________ is the amount of deviation from the true value and not a mistake on the part of the worker.  Answer: error FBQ5: A standard curve is used in biological experiments. ______True or False Answer: True FBQ6: What is the name of the glassware represented? ____________ Answer: Conical flask FBQ7: The Bradford assay is a colorimetric assay. True or False Answer: True FBQ8: Identify the figure represented ________ Answer: Volumetric flask FBQ9: What does the sign stand for ?________  Answer: Open Flame Prohibited FBQ10: The actual measurement of pH is then done by­­­­ dipping the _____ into the test solution and reading off the value Answer: glass electrode FBQ11: The first step to standardize a pH meter is by dipping into ______ Answer: Buffer solution FBQ12: Identify the apparatus represented________ Answer: Bunsen Burner FBQ13: The second step to standardize a pH meter is by rinsing with_______ Answer: deionized water FBQ14: The ability of a buffer to resist change in pH is referred to as.__________ Answer: Buffer capacity FBQ15: _________ is a technique involving the determination of the amount of light that is transmitted or absorbed by a substance at a given wavelength. Answer: Spectrophotometry FBQ16: __________ is the science concerned with measuring human visual response to light. Answer: Photometry FBQ17: ________ states that the absorption of a monochromatic light passing through an absorbing medium is directly proportional to the concentration of the absorbing molecules for a constant path length. Answer: Beer’s law FBQ18: _________ law states that when a ray of monochromatic light passes through an absorbing medium, its intensity decreases exponentially as the length of the absorbing medium increases arithmetically and the light absorbed is independent of the source of light. Answer: Lambert’s FBQ19: ______ law states that when monochromatic light passes through a solution, the amount of light transmitted decreases exponentially with the increase in the concentration of the solution and with the increase in the thickness of the layer of the solution through which the light passes. Answer: Beer-lambert’s FBQ20: Name the glassware represented_______ Answer: Round bottom flask FBQ21: Biuret reagent contains 6 ml of biuret .True or False________ Answer: False FBQ22: The building blocks of proteins are known as _________ Answer: Amino acids FBQ23: What colour does Phenylalanine give with Ninhydrin? ________ Answer: Purple FBQ24: What colour does proline give with Ninhydrin?_______ Answer: Yellow FBQ25: Biuret reagent can be used both quantitatively and qualitatively. True or False ______ Answer: True FBQ26: Biuret reagent can be stored indefinitely in a dark room by adding sodium nitrate. True or False _______ Answer: False FBQ27: What does this sign stand for in the laboratory?_______ Answer: Live electricity FBQ28: A facility that provides controlled conditions in which scientific research, experiments, and measurement may be performed._______ Answer: Laboratory FBQ29: Name the type of glass used in the laboratory due to its resistance to thermal stress._____ Answer: Pyrex FBQ30: Name the type of glass used in the laboratory due to its ability to withstand high temperatures or its transparency in certain parts of the electromagnetic spectrum._______ Answer: Quartz glass FBQ31: ________ glass is used to keep out much of the UV and IR radiation so that the effect of light on the contents is minimized. Answer: darkened brown FBQ32: What type of container is used to store hydrofloric acid in the laboratory ________ Answer: Polyethylene containers FBQ33: ________ is freedom from harm or accident. Answer: Safety FBQ34: The guidelines designed to help keep you safe when experimenting are known as _________ Answer: Safety rules FBQ35: A standard curve is a quantitative research tool. ___________True or False Answer: True MCQ1: All but one of these are laboratory glass wares_______ Answer: Magnetic stirrer MCQ2: Which of these is the most appropriate way to clean a glass ware used for hexane ? ______ Answer: Rinse 2-3 times with ethanol, rinse 3-4 times with deionized water, then put the glassware away. MCQ3: If an experiment contains a systematic error, then increasing the sample size generally ______. Answer: increases precision MCQ4: Which of the following is the outcome of eliminating systematic error in an experiment? _______ Answer: improves accuracy MCQ5: One of these is safe to be worn in the laboratory.__________ Answer: Covered shoes MCQ6: All these are DON’Ts in the Laboratory Except Answer: wear light weight disposable gloves during weighing MCQ7: Which of the following is NOT a basic unit? Answer: degree Celsius MCQ8: Candela is the SI unit of which of the following physical quantities? Answer: luminous intensity MCQ9: What is the SI unit of absorbed dose of irradiation? Answer: Gray MCQ10: What is the SI unit of radioactivity? Answer: Becquerel MCQ11: Which of the following is NOT a derived unit? Answer: Candela MCQ12: What is the SI unit of electric charge? Answer: Coulomb MCQ13: Siemen is the SI unit of which of the following physical quantities? Answer: Conductance MCQ14: Which of the following is NOT true of errors? Answer: they should be lived with MCQ15: What does this safety sign represent in the Laboratory Answer: Sign for fire extinguisher MCQ16: Which of the following types of light is photometry concerned with? Answer: visible light MCQ17: To which of the following colour(s) are people less sensitive? I. green, II. red, III. violet Answer: II and III MCQ18: Which of the following is the most widely used method for determining the concentrations of biochemical compounds? Answer: Colorimetry MCQ19: Which of the following is not a type of colorimeter used in laboratories? Answer: Beckman 202 MCQ20: Which of the following laws state that the absorption of a monochromatic light passing through an absorbing medium is directly proportional to the concentration of the absorbing molecules for a constant path length? Answer: Beer's law MCQ21: One of these statements is not true of errors. Answer: They can be not a mistake on the part of the worker MCQ22: There are ___ approaches to the preparation of buffer. Answer: 2 MCQ23: The following should be used for cleaning a cuvette EXCEPT ______. Answer: Brush MCQ24: ____ is an example of water soluble solution. Answer: sucrose solution MCQ25: The principle that cyclic amino acids react with HNO3 to give a yellow nitrocompound, which changes color to orange in alkaline medium owing to the formation of salt is employed in ________ Answer: Xanthoprotein reaction MCQ26: The following are true of proteins EXCEPT ____. Answer: they are more abundant in animals MCQ27: Which of these statements are NOT true of random errors? Answer: They are caused due to problems with the measuring instruments MCQ28: The following are materials used in the colormetric estimation of inorganic phosphates except ____. Answer: oxidizing agent MCQ29: Which of the terms indicates proximity of measurement results to the true value? Answer: Accuracy MCQ30: Which of these will be increased by increasing the sample size in an experiment which has a systemic error? Answer: Precision MCQ31: The following are laboratory safety rules EXCEPT ______. Answer: be diligent MCQ32: The following laboratory equipment are made of glass except ___. Answer: Refrigerator MCQ33: Which of these physical quantities has a Basic Unit? Answer: Mass MCQ34: Which of these physical quantities has a Derived Unit? Answer: Work MCQ35: Which of these is the unit for Potential difference? Answer: Volt