Engineering/ Chemical Engineering MCQ Question Set 1 Sample Test,Sample questions

Question:
 A mixture contains 9 gram each of H2O and NaCl, what is the mole fraction of NaCl?

1.0.15

2.0.23

3.0.45

4.0.64


Question:
 If the mole fraction of 4.5 moles of solute is 0.5, what is the number of moles of solvent?

1. 9

2.4.5

3.1.5

4.3


Question:
 If the mole fraction of SO2 in H2SO4 is 0.2, what is the ratio of mass of sulfur and oxygen in the solution?

1.0.166

2.6

3.1.8

4.0.555


Question:
 What is the mass of a liquid having density 20 kg/m3, enclosed in a sphere of radius 1 m?

1.80.7 kg

2.83.7 kg

3.85.7 kg

4.88.7 kg


Question:
A compound contain 12% of carbon, 16% of oxygen, 28% of nitrogen, 4% of hydrogen and 40% calcium by weight, then what can be the possible formula of the compound?

1.C2H3N2Ca(OH)

2. CH4N4Ca2(OH)

3.CH3N2Ca2(OH)

4.None of the mentioned


Question:
A compound contains 40% of Sulphur and 60% of Oxygen, what is the empirical formula of the compound?

1.SO2

2.SO3

3. SO4

4.None of the mentioned


Question:
A cylinder completely filled with water has density = 10 kg/m3 and volume 5 m3 , now a cube with side 1 m and density 25 kg/m3 is dipped into the cylinder with some water dropping out, what is the final density of cylinder?(neglect the mass of cylinder)

1.13 kg/m3

2.15 kg/m3

3. 17 kg/m3

4.19 kg/m3


Question:
A gaseous mixture composed of 20% CH4, 30% C2H4, 35% C2H2, and 15% C2H2O. What is the average molecular weight of the mixture?

1.20

2.25

3. 6.75

4. 9.25


Question:
A gaseous mixture is composed of 20% CO2, 40% O2 and 40% N2. What is the mass fraction of N2?

1. 0.307

2.0.416

3.0.529

4.0.784


Question:
A liquid mixture composed of 20% CH4, 30% C2H4, 35% C2H2, and 15% C2H2O. What is the average molecular weight of the mixture?

1.20

2.25

3.6.75

4.9.25


Question:
A liquid mixture of O2, CH4 and CO has the composition 32% O2, 16% CH4 and 52% CO, then what is the mole fraction of CH4?

1.0.1

2.0.2

3.0.25

4.0.5


Question:
A liquid of mass 10 kg is enclosed in a cylinder of radius 1 m and length 5 m, what is the density of liquid?

1.0.54 kg/m3

2. 0.44 kg/m3

3. 0.63 kg/m3

4.0.83 kg/m3


Question:
A mixture contains 10 grams each of CH4, H2O, and SO2, what is the mole fraction of CH4?

1.0.14

2.0.31

3.0.46

4.0.67


Question:
A mixture contains 10% CO, 40% CO2 and 50% H2O, what is the mass percent of CO2?

1.9.5

2.15.4

3. 39.5

4.74.1


Question:
A mixture contains 20% CO2, 30% SO2 and 50% H2O, what is the mass percent of CO2?

1.23

2.45

3.66

4.87


Question:
A mixture contains 20% NaCl, 30% CH4 and 50% H2O, what is the mass percent of NaCl?

1. 21

2.34

3.45

4.68


Question:
A mixture contains 23 g of ethanol and 36 g of water, some acetic acid is added to the mixture and its mole fraction becomes 0.5, how much acetic acid was added?

1.25 g

2.75 g

3.100 g

4.150 g


Question:
A mixture contains 80% of HCl and 20% H2O by weight, what is the mole fraction of HCl?

1.0.15

2.0.29

3.0.45

4.0.66


Question:
A mixture contains 80% of NaOH and 20% H2O by weight, what is the mole fraction of NaOH?

1.0.24

2.0.42

3.0.64

4.0.78


Question:
A mixture of gases SO2, O2 and 4 g of N2 and total mass of mixture is 10 g, what is the sum of mole fraction of SO2 and O2?

1.0.25

2.0.5

3. 0.75

4.1


Question:
A neutral gas that is made of nitrogen and hydrogen only contains 7 g of nitrogen is in a mixture of with total mass 17 g, what is the mass fraction of the gas?

1.0.5

2. 0.25

3.0.45

4.0.8


Question:
A solid of density d is dropped in a liquid of density D, if d>D then,

1.Solid will completely sink

2.Solid will completely float

3.Solid will partially sink

4.None of the mentioned


Question:
A solution has 25% w/w solution of Sodium Chloride in 10 grams of water what is the mole fraction of Sodium Chloride?

1.0.05

2. 0.06

3.0.07

4.0.08


Question:
An empty vessel has with mass 5 kg with volume 0.1 m3, is now completely filled with a liquid of density 100 kg/m3, what is the final density of the cylinder?

1.50 kg/m3

2. 100 kg/m3

3.150 kg/m3

4.200 kg/m3


Question:
Calculate the number of moles in 369 grams of CaOCl2?

1. 1

2. 2

3.3

4. 4


Question:
Calculate the number of moles in 42 grams of NaHCO3?

1. 0.5

2. 1

3. 1.5

4. 2


Question:
How many atoms of carbon represent 1.5 mole?

1.6.022 X 1023

2.1.2044 X 1023

3.3.011 X 1023

4.9.033 X 1023


Question:
How many grams of NaCl represent 1 mole?

1.23

2.35.5

3.58.5

4.69.5


Question:
If a compound contains 48% of Carbon, 48% of oxygen and 8% of hydrogen by weight, then what is the possible molecular formula of the compound?

1.C2H4O

2.CH4O3

3.C4H4O3

4.C4H8O3


Question:
If hydrogen is 14% by weight in CH3(OH)x(NH3)y, then what is the possible value of x*y?

1.6

2.12

3.18

4.24


Question:
If the mole fraction of sodium is 0.25 in 9 moles of liquid carbon dioxide, what is the mass fraction of sodium?

1.0.10

2.0.15

3.0.20

4. 0.25


Question:
The mole percent of CO2 and H2O in a mixture is 40% and 60% respectively, what is the mass percent of CO2?

1.24.1

2.47.2

3.61.9

4.78.5


Question:
The mole percent of H2 and N2 in a mixture is 50% each, what is the mass percentage of H2?

1.12.5

2. 25

3. 50

4.87.5


Question:
What are the number of atoms of chlorine in 250.5 grams of Cl2O6?

1.1.806 X 1024

2.2.408 X 1024

3.9.033 X 1023

4.6.022 X 1023


Question:
What are the number of molecules of water in CuSO4•5H2O, if the weight of oxygen in it is 36 grams?

1.3.25 X 1023

2.5.25 X 1023

3.7.52 X 1023

4.9.52 X 1023


Question:
What are the number of moles of Hydrogen in 158 grams of Ammonium Bicarbonate?

1.5

2.10

3.15

4.20


Question:
What are the number of moles of hydrogen in NH4[Cr(SCN)4(NH3)2] if the weight of nitrogen in it is 49 grams?

1.3.5

2.5

3.7

4.10


Question:
What are the number of moles of nitrogen in 274 grams of (NH4)2Ce(NO3)6?

1.16

2. 8

3. 6

4.4


Question:
What is the density of a liquid of mass 10 kg and contained in a cylinder of radius 5 m and surface area (excluding top and bottom) of 10π m2?

1. 0.2π kg/m3

2.0.4π kg/m3

3.0.5π kg/m3

4.0.6π kg/m3


Question:
What is the density of a liquid of mass 20 kg, enclosed in a cuboid of surface areas of three sides as 1 m2, 2 m2, 5 m2, and one of its sides is 2 m?

1.1 kg/m3

2. 2 kg/m3

3.3 kg/m3

4. 4 kg/m3


Question:
What is the density of a substance of mass 10 grams and volume 5 liters?

1.2 kg/m3

2.20 kg/m3

3.200 kg/m3

4.2000 kg/m3


Question:
What is the mass fraction of 4 moles of Sodium in 8 moles of Hydrogen chloride?

1.0.24

2. 0.48

3. 0.56

4.0.72


Question:
What is the mass of a cube having surface area 24 m2, and density 1 kg/m3?

1.1 kg

2. 2 kg

3.4 kg

4.8 kg


Question:
What is the mole fraction of sodium with moles n in a solution with moles of solvent N?

1. N/n

2. n/N

3.n/(n + N)

4.N/(n + N)


Question:
What is the molecular weight of a mixture that contains 25% CO2, 40% O2 and 35% N2?

1.11.2 g

2.22.4 g

3.33.6 g

4.44.8 g


Question:
What is the specific gravity of a substance with density 100 kg/m3 with respect to reference substance of density 100 lb/m3?

1.1.1

2. 2.2

3.3.3

4.4.4


Question:
What is the unit of mole fraction?

1.Kg/m3

2. N/m3

3.m-2

4.None of the mentioned


Question:
What is the value of x in C2H8(OH)x if the percentage by weight of hydrogen is 12%?

1.1

2.2

3.3

4.4


Question:
What is the weight of 10 moles of a mixture with composition 15% O2, 25% SO2, 30% COCl2, 25% SO3 and 5% N2?

1.124

2.345

3.507

4.719


Question:
Which of the following is not a unit of density?

1.Kg/m3

2.N/m3

3.N.s2/m4

4. g/cm3


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