CHM103 TMA

CHM103 List of Questions and Answer

Q1 Molar concentration is expressed in
 
 
 
 

Q2 The unit for electric current is
 
 
 
 

Q3 The accepted way of writing fifty kilogram is
 
 
 
 

Q4 SI stands for
 
 
 
 

Q5 Convert 0.06 meter to millimeter
 
 
 
 

Q6 if a mass of 5 g is given its equivalent in kg wi be
 
 
 
 

Q7 The equivaent of 1 hr in seconds is
 
 
 
 

Q8 Micro unit is equivalent to
 
 
 
 

Q9 The equivaent of 25^oC in Kelvin scale is
 
 
 
 

Q10 Given the expression for the general gas PV = nRTequation, find R
 
 
 
 

Q11 Pressure is expressed as force/area, which oof the foowing represent its SI units
 
 
 
 

Q12 g/mol is a
 
 
 
 

Q13 Find the mass concentration of NaCl solution having 25 g dissolved in 150 g of distilled water
 
 
 
 

Q14 kgm^3 is a unit of
 
 
 
 

Q15 �?��?��?��?��?�. Units are obtained from the mathematical combination of two or more basic units
 
 
 
 

Q16 Temperature is a unit of measuring heat
 
 
 
 

Q17 Candela is the SI unit for
 
 
 
 

Q18 How many basic units are there?
 
 
 
 

Q19 SI units were adopted in order to
 
 
 
 

Q20 Physical quantities from which all other physical quantities can be derived are known as
 
 
 
 

Q21 At constant temperature, the partial pressure of a gas over a solution is directly proportional to the concentration of the gas in· the solution, whose law is it?
 
 
 
 

Q22 How would the freezing point depression of a 0.05 m CaCl2 solution compare with that of a NaCl solution?
 
 
 
 

Q23 In air , Nitrogen gas acts as a
 
 
 
 

Q24 If the temperature of a gas increases, the volume will _____________
 
 
 
 

Q25 If PV =2 and volume is 4 dm$${^3}$$, what will be the corresponding pressure
 
 
 
 

Q26 When 0.25 L of liquid nitrogen (d = 0.807 g/mL) is vaporized, what volume does the resulting gas occupy at 25 °C and 5.00 atm
 
 
 
 

Q27 Under what conditions does the behaviour of real gases deviate from that predicted by the ideal gas law?
 
 
 
 

Q28 One of these form a crystal with a Bee structure
 
 
 
 

Q29 Solids can be classified into all but one of the following
 
 
 
 

Q30 Which of these statements is not true?
 
 
 
 

Q31 One of these is not part of the procedure in determining the critical temperature of a liquid.
 
 
 
 

Q32 Which of these is not necessary when reporting practical work in chemistry?
 
 
 
 

Q33 Which of these is the correct way of representing ten kilograms in figures? ____________
 
 
 
 

Q34 One of these statements is untrue about semiconductors.
 
 
 
 

Q35 One of these statements is not true of the kinetic-molecular theory of gases.
 
 
 
 

Q36 Which of the following is a pure substance made up of one type of atom?
 
 
 
 

Q37 In a closed container a liquid in equilibrium with its vapour:
 
 
 
 

Q38 Which of these statements is true of mixtures?
 
 
 
 

Q39 In filtration, the term �??residue�?? refers to
 
 
 
 

Q40 Fractional distillation can be used to:
 
 
 
 

Q41 Which of the following statements is true about compounds and mixtures?
 
 
 
 

Q42 What is a compound?
 
 
 
 

Q43 Which of these is an amorphous solid?
 
 
 
 

Q44 Which of these mixtures is not a nearly ideal liquid mixture?
 
 
 
 

Q45 Which of these is not crystalline
 
 
 
 

Q46 A liquid that has high viscosity flows ____________.
 
 
 
 

Q47 A container with volume 71.9 ml contains water vapor at a pressure of 10.4 atm and a temperature of 465oC. How many grams of the gas are in the container?
 
 
 
 

Q48 Which one of the following can be separated by adding water, stirring and filtering?
 
 
 
 

Q49 A mixture of graphite and diamond constitutes __________ phases.
 
 
 
 

Q50 The molarity of urea in a solution prepared by dissolving 16 g of urea (MW = 60.0 g/mol) in 39 g of H2O is __________ M. The density of the solution is 1.3 g/mL.
 
 
 
 

Q51 The mole fraction of He in a gaseous solution prepared from 4.0 g of He, 6.5 g of Ar, and 10.0 g of Ne is __________.
 
 
 
 

Q52 Which of these describes what happens when water freezes?
 
 
 
 

Q53 In filtration, the term �??filtrate�?? refers to
 
 
 
 

Q54 A gas occupies a volume of 2.4 L at 14.1 kPa. What volume will the gas occupy at 84.6 kPa?
 
 
 
 

Q55 The gaseous mixture is a ___________ phase system.
 
 
 
 

Q56 Standard temperature and pressure (STP) refers to which conditions?
 
 
 
 

Q57 Fractional distillation cannot be used to
 
 
 
 

Q58 The density of a crystal depends on all the following except
 
 
 
 

Q59 Which of these assumes the shape of its container?
 
 
 
 

Q60 One of the followings is not true of liquids
 
 
 
 

Q61 Molar concentration is expressed in
 
 
 
 

Q62 The unit for electric current is
 
 
 
 

Q63 The accepted way of writing fifty kilogram is
 
 
 
 

Q64 SI stands for
 
 
 
 

Q65 Convert 0.06 meter to millimeter
 
 
 
 

Q66 if a mass of 5 g is given its equivalent in kg wi be
 
 
 
 

Q67 The equivaent of 1 hr in seconds is
 
 
 
 

Q68 Micro unit is equivalent to
 
 
 
 

Q69 The equivaent of 25^oC in Kelvin scale is
 
 
 
 

Q70 Given the expression for the general gas PV = nRTequation, find R
 
 
 
 

Q71 Pressure is expressed as force/area, which oof the foowing represent its SI units
 
 
 
 

Q72 g/mol is a
 
 
 
 

Q73 Find the mass concentration of NaCl solution having 25 g dissolved in 150 g of distilled water
 
 
 
 

Q74 kgm^3 is a unit of
 
 
 
 

Q75 �?��?��?��?��?�. Units are obtained from the mathematical combination of two or more basic units
 
 
 
 

Q76 Temperature is a unit of measuring heat
 
 
 
 

Q77 Candela is the SI unit for
 
 
 
 

Q78 How many basic units are there?
 
 
 
 

Q79 SI units were adopted in order to
 
 
 
 

Q80 Physical quantities from which all other physical quantities can be derived are known as
 
 
 
 

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