## TMA Solutions: CHM103 - Introductory Physical Chemistry

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### TMA Solutions: CHM103 - Introductory Physical Chemistry

TMA Solutions: CHM103 - Introductory Physical Chemistry

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Q1 Molar concentration is expressed in

mol/dm^3

Q2 The unit for electric current is

ampere

Q3 The accepted way of writing fifty kilogram is

50 kg

Q4 SI stands for

Systemme Iin ternationale

Q5 Convert 0.06 meter to millimeter

60 mm

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

0.005 kg

Q7 The equivaent of 1 hr in seconds is

3600 s

Q8 Micro unit is equivalent to

110^-6

Q9 The equivaent of 25^oC in Kelvin scale is

298K

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

PV/nT

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

N/m^2

Q12 g/mol is a

Derived un it

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

0.167 g/dm^3

Q14 kgm^3 is a unit of

Density

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

Basic un its

Q16 Temperature is a unit of measuring heat

false

Q17 Candela is the SI unit for

Current

Q18 How many basic units are there?

7

Q19 SI units were adopted in order to

adopt common units of measu rement

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

Basic units

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Richtubor
Posts: 608
Joined: Mon Aug 21, 2017 8:24 pm
Contact:

### Re: TMA Solutions: CHM103 - Introductory Physical Chemistry

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Whatsapp: 08155572788

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?

Henry's law

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

P+F=C+2

Q23 In air , Nitrogen gas acts as a

Solven t

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

Increase

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

½atm

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

35L

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

High Pressure, LowTemperature

Q28 One of these form a crystal with a Bee structure

CsCl

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

Micromolecular solids

Q30 Which of these statements is not true?

Linde's method is more efficient in liquefact ion of gases that Claude's

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

Place the filled capillary tube in ice block and observe

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

Place of experiment

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

10 kg

Q34 One of these statements is untrue about semiconductors.

They conduct under normal conditions

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

The average kinetic energies of different gases are different at the same temperature.

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

Element

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

The rate at which molecules from the liquid phase enter the gas ph ase exactly equals the rate at which molecules from the gas phase pass into the liquid phase

Q38 Which of these statements is true of mixtures?

Very little or no exchange of energy occurs during the formation of mixtures

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

the solid that remains on the filter paper

Q40 Fractional distillation can be used to:

Separate the component of crude oil

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Richtubor
Posts: 608
Joined: Mon Aug 21, 2017 8:24 pm
Contact:

### Re: TMA Solutions: CHM103 - Introductory Physical Chemistry

Solutions2tma@gmail.com
Whatsapp: 08155572788

Q61 Molar concentration is expressed in

mol/dm^3

Q62 The unit for electric current is

ampere

Q63 The accepted way of writing fifty kilogram is

50 kg

Q64 SI stands for

Systemme Iinte rnationale

Q65 Convert 0.06 meter to millimeter

60 mm

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

0.005 kg

Q67 The equivaent of 1 hr in seconds is

3600 s

Q68 Micro unit is equivalent to

110^-6

Q69 The equivaent of 25^oC in Kelvin scale is

298K

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

PV/nT

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

N/m^2

Q72 g/mol is a

Derived un it

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

0.167 g/dm^3

Q74 kgm^3 is a unit of

Density

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

Basic un its

Q76 Temperature is a unit of measuring heat

false

Q77 Candela is the SI unit for

Current

Q78 How many basic units are there?

7

Q79 SI units were adopted in order to

adopt common units of measu rement

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

Basic units

Solutions2tma@gmail.com
Whatsapp: 08155572788
Richtubor
Posts: 608
Joined: Mon Aug 21, 2017 8:24 pm
Contact:

### Re: TMA Solutions: CHM103 - Introductory Physical Chemistry

Solutions2tma@gmail.com
Whatsapp: 08155572788

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

Unlike compounds, very little or no exchange of energy occurs during the formation of mixtures.

Q42 What is a compound?

A substance which is made up of two or more elements chemically joined together.

Q43 Which of these is an amorphous solid?

Glass

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

water and ethanol

Q45 Which of these is not crystalline

Polythene

Q46 A liquid that has high viscosity flows ____________.

slowly

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?

0.222 g

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

Sulfur and sug ar

Q49 A mixture of graphite and diamond constitutes __________ phases.

two

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.

6.3

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 __________.

0.6

Q52 Which of these describes what happens when water freezes?

a phase change occurs from a liquid phase to a solid phase
an exothermic process occurs where energy is lost from ice to the surroundings
the liquid water changes from a random structure to a crystalline solid
***all of the above

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

the liquid that drains through the filter p aper.

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

0.40 L

Q55 The gaseous mixture is a ___________ phase system.

one

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

273 k and 1 atm

Q57 Fractional distillation cannot be used to

test the purity o f a substance

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

Its geom etry

Q59 Which of these assumes the shape of its container?

Liqui d

Q60 One of the followings is not true of liquids

The inability of a liquid to flow enables it to a ssume the shape of the container

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