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chapter one mcq for engversion

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CHEMISTRY LEARNING CHECK CHAPTER ONE: LABORATORY SAFETY 1. Which one of the following element is used for the protection of your skin and clothes? Apron/Gloves/Mask/ Safety Goggles 2. Which one of the following apparatus is used in titration? Beaker /Burner / Balance / Burette 3.In order to protect your eyes from the exposure to volatile substance the element that is used is Safety hat / Safety shield / Mask / Safety Goggles 4.Which one of the following chemical can be used to remove the spot ca
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  CHEMISTRY LE RNING CHECK BIPLOB DEB,FACULTY, DEPARTMENT OF CHEMISTRY, NOTRE DAME COLLEGE,DHAKA.Ph: 01711220991 CHAPTER ONE:  LABORATORY SAFETY 1. Which one of the following element is used for the protection of your skin and clothes?  Apron/Gloves/Mask/ Safety Goggles 2. Which one of the following apparatus is used in titration? Beaker /Burner / Balance / Burette 3.In order to protect your eyes from the exposure to volatile substance the element that is used is Safety hat / Safety shield / Mask / Safety Goggles 4.Which one of the following chemical can be used to remove the spot caused by ferric salt? NaOH/ HCl / Soap / Detergent 5. Elements required for the personal safety are- Apron/ Gloves / First Aid Box / Spectacles 6.Solution of known strength are known as- Buffer solution /Stock solution / Standard solution / Unknown solution. 7.Golden yellow colour in the flame test is due to the presence of Rb / Ca / Cs / Na. 8.What type of flame generates maximum heat? Luminous/ Non Luminous / Blue /Yellow. 9.Materials that has the tendency to absorb water from the atmospheric system should be kept in- refrigerator/ cabinet / Reagent table / Dessicator. 10.What type of action is needed during the heating of any glassware? Avoid the exposure of  water to the heated glassware/ do not heat the broken glassware/ take special safety precaution / take random action. 11. How will you store the new chemicals? Keep it in a washed container/ keep it in the reagent table / keep it in the upper rack of the reagent cabinet / use srcinal container. 12.Concentration of molar solution is 1/0.5/0.1/0.001 13.Chemical entity that is used to detect the ions or radicals in the laboratory is known as-  Acid/base/reagent /Solvent. 14.How will keep the reagent free from contamination? Use personal dropper/ keep it in a specified area/ use a fixed dropper/ keep the cap air tight using para film. 15.Which points should be considered before using a chemical? Manufacturer/ Date of Production/ Name and Formula / concentration.  CHEMISTRY LE RNING CHECK BIPLOB DEB,FACULTY, DEPARTMENT OF CHEMISTRY, NOTRE DAME COLLEGE,DHAKA.Ph: 01711220991 16.What type of precaution can be taken for the protection of the apparatus? Keep it in its srcinal place after use/ Make it clean after use / Do not touch the hot glassware / Use broken beaker. 17.How will you minimize the risk of a chemistry laboratory? Do not keep any expired chemicals/ Keep the solid waste in a specific dustbin /Pour the chemicals in the drain after use/ Use safe disposal practice. 18. What type of pollution may arise if you discard your chemicals directly in the drainage system? Air / Water /Soil / Sound. 19.What amount of NaOH will be needed to produce 100 mL 0.1M solution? 1/ 0.5 /0.4 /0.1g 20. Semi micro analysis hold the analyte in the scale of 1g / 0.01g / 0.001g/ 0.0001g 21.If the weight of rider is 1mg and if the partion is 100 then the rider constant will be- 0.1/0.01/0.001/0.0001 22.What amount of solution should be taken from 0.5M HCl solution to make it 100 mL 0.2M?20/40/60/80 23. First aid box contains-Mineral water / dettol / distilled water / antiseptic cream. 24. The chemical entity that is used in the titration process to change the colour at the end point is known as  Acid / Base / Indicator/ Oxidant. 25.What will you do after the experiment? Safe disposal / Pour the chemicals in the drain /  Wash the apparatus / Discard the materials in the water body . 26.How will you perform the experiments that generates smoke? Open laboratory system/ Near the water bath / Close to the refrigerator / In a fume compartment. 27.Which type of equipment requires special attention? Sharp edged / Glassware / Plastic / Metallic. 28.Which one of the following equipment is needed to take the solution from the container during the titration? Burette/ Pipette/ Measuring cylinder / test tube. 29. What amount of 0.1M NaOH will be needed to neutralize 100 mL 0.1M HCL solution? 20/50/100/200.  CHEMISTRY LE RNING CHECK BIPLOB DEB,FACULTY, DEPARTMENT OF CHEMISTRY, NOTRE DAME COLLEGE,DHAKA.Ph: 01711220991 30.Which one of the following system is used in the accident? Calling Bell/ refrigerator/ Fire  Alarm / eye Washer. 31.What will you do if your skin is exposed to acid? Wash it with water rapidly/ contact with the doctor/ use base / make noise in the laboratory. 32.How will you reduce the harmful impact on environment? Recycle/ Restore/ Reintroduce/ Refining. 33.Blue litmus turns red because of acid / base / water / oxidant. 34.Chemicals having low bp is known as volatile/ sublimate/ amorphous/anhydrous. 35.What is the goal of optimum use of chemicals? Right form of experiment / safety / environmental protection / Minimization of laboratory risk. 36.What type of balance is more feasible? Analog/ 2 digit digital / 4 digit digital / analytical balance. 37.Which option will be followed for the safe disposal of acid? Safe storage / Neutralization / Dilution / Direct throwing in the soil. 38.Safety goggles is used when- fumes will be generated / Conc. Acids are used / Volatile substances are used/ making a solution by dissolving solute of solid state. 39.What do mean by decimolar solution? 1M/0.5M /0.1M /0.001M. 40.What amount of water is needed to make 250 cc sulphuric acid solution of 0.5m from 1M solution?125/250/500/600mL

chapter5_1

Jul 24, 2017
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