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
Posted Date:-2022-03-11 05:26:12
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
Posted Date:-2022-03-11 05:22:12
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
Posted Date:-2022-03-11 05:24:12
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
Posted Date:-2022-03-11 05:31:09
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
Posted Date:-2022-03-11 05:34:52
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
Posted Date:-2022-03-11 05:27:51
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
Posted Date:-2022-03-11 05:32:37
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
Posted Date:-2022-03-11 05:37:20
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
Posted Date:-2022-03-11 05:36:33
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
Posted Date:-2022-03-11 05:36:57
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
Posted Date:-2022-03-11 05:36:04
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
Posted Date:-2022-03-11 05:29:56
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
Posted Date:-2022-03-11 05:26:39
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
Posted Date:-2022-03-11 05:41:04
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
Posted Date:-2022-03-11 05:39:23
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
Posted Date:-2022-03-11 05:40:29
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
Posted Date:-2022-03-11 05:25:23
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
Posted Date:-2022-03-11 05:27:01
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
Posted Date:-2022-03-11 05:27:25
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
Posted Date:-2022-03-11 05:24:35
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
Posted Date:-2022-03-11 05:24:57
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
Posted Date:-2022-03-11 05:29:30
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
Posted Date:-2022-03-11 05:23:48
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
Posted Date:-2022-03-11 05:31:57
Calculate the number of moles in 369 grams of CaOCl2?
1. 1
2. 2
3.3
4. 4
Posted Date:-2022-03-11 05:17:28
Calculate the number of moles in 42 grams of NaHCO3?
1. 0.5
2. 1
3. 1.5
4. 2
Posted Date:-2022-03-11 05:16:43
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
Posted Date:-2022-03-11 05:15:34
How many grams of NaCl represent 1 mole?
1.23
2.35.5
3.58.5
4.69.5
Posted Date:-2022-03-11 05:15:09
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
Posted Date:-2022-03-11 05:34:26
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
Posted Date:-2022-03-11 05:35:39
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
Posted Date:-2022-03-11 05:23:22
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
Posted Date:-2022-03-11 05:38:55
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
Posted Date:-2022-03-11 05:38:27
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
Posted Date:-2022-03-11 05:18:04
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
Posted Date:-2022-03-11 05:20:38
What are the number of moles of Hydrogen in 158 grams of Ammonium Bicarbonate?
1.5
2.10
3.15
4.20
Posted Date:-2022-03-11 05:18:27
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
Posted Date:-2022-03-11 05:19:45
What are the number of moles of nitrogen in 274 grams of (NH4)2Ce(NO3)6?
1.16
2. 8
3. 6
4.4
Posted Date:-2022-03-11 05:19:19
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
Posted Date:-2022-03-11 05:30:43
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
Posted Date:-2022-03-11 05:30:19
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
Posted Date:-2022-03-11 05:29:04
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
Posted Date:-2022-03-11 05:22:35
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
Posted Date:-2022-03-11 05:31:36
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)
Posted Date:-2022-03-11 05:21:24
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
Posted Date:-2022-03-11 05:33:27
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
Posted Date:-2022-03-11 05:43:12
What is the unit of mole fraction?
1.Kg/m3
2. N/m3
3.m-2
4.None of the mentioned
Posted Date:-2022-03-11 05:21:49
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
Posted Date:-2022-03-11 05:35:13
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
Posted Date:-2022-03-11 05:33:53
Which of the following is not a unit of density?
1.Kg/m3
2.N/m3
3.N.s2/m4
4. g/cm3
Posted Date:-2022-03-11 05:28:41