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Home » Engineering » Aptitude Test - 19
Hassan
1.How many atoms of carbon represent 1.5 mole?
A. 6.022 X 1023
B. 1.2044 X 1023
C. 3.011 X 1023
D. 6.022 X 1023
2.Calculate the number of moles in 42 grams of NaHCO3?
A. 0.5
B. 1
C. 1.5
D. 0.5
3.Calculate the number of moles in 369 grams of CaOCl2?
A. 1
B. 2
C. 3
D. 1
4.Which of the following has the same number of moles as in 398 grams of CuSO4?
A. 2 grams of hydrogen
B. 40 grams of oxygen
C. 35 grams of nitrogen
D. 2 grams of hydrogen
5.What are the number of atoms of chlorine in 250.5 grams of Cl2O6?
A. 1.806 X 1024
B. 2.408 X 1024
C. 9.033 X 1023
D. 1.806 X 1024
6.What are the number of moles of nitrogen in 274 grams of (NH4)2Ce(NO3)6?
A. 16
B. 8
C. 6
D. 16
7.Which of the following is not a unit of density?
A. Kg/m3
B. N/m3
C. N.s2/m4
D. Kg/m3
8.What is the density of a substance of mass 10 grams and volume 5 liters?
A. 2 kg/m3
B. 20 kg/m3
C. 200 kg/m3
D. 2 kg/m3
9.A solid of density d is dropped in a liquid of density D, if d>D then?
A. Solid will completely sink
B. Solid will completely float
C. Solid will partially sink
D. Solid will completely sink
10.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?
A. 0.54 kg/m3
B. 0.44 kg/m3
C. 0.63 kg/m3
D. 0.54 kg/m3
11.What is the mass of a liquid having density 20 kg/m3, enclosed in a sphere of radius 1 m?
A. 80.7 kg
B. 83.7 kg
C. 85.7 kg
D. 80.7 kg
12.What is the mass of a cube having surface area 24 m2, and density 1 kg/m3?
A. 1 kg
B. 2 kg
C. 4 kg
D. 1 kg
13.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?
A. 50 kg/m3
B. 100 kg/m3
C. 150 kg/m3
D. 50 kg/m3
14.What is the unit of specific gravity?
A. Kg/m3
B. N/m3
C. m/s2
D. Kg/m3
15.What is the specific gravity of a substance with density 100 kg/m3 with respect to reference substance of density 100 lb/m3?
A. 1.1
B. 2.2
C. 3.3
D. 1.1
16.What is the specific gravity of a substance with mass 10 kg and volume 2 m3, with respect to the reference density 50 g/m3?
A. 0.1
B. 0.2
C. 0.3
D. 0.1
17.API gravity is measured in?
A. Gravity meter scale
B. Hydrometer scale
C. Richer scale
D. Gravity meter scale
18.What is the API gravity of a substance with specific gravity 1?
A. 131.5
B. 141.5
C. 10
D. 131.5
19.What is the average mass of a substance with specific gravity 10, and its volume varies with time as V = t/500, from t = 2, to t = 0 seconds? (Density of water = 1000 kg/m3)
A. 25
B. 20
C. 40
D. 25
20.What is the specific gravity of 10 Kg of water occupied in 10 m3 with respect to 200 g/m3?
A. 0.2
B. 0.5
C. 1
D. 0.2
21.What is the specific gravity of 5 Kg of water occupied in 10 m3 with respect to 500 g/m3?
A. 0.5
B. 1
C. 2
D. 0.5
22.What is the specific gravity of 10 Kg of water occupied in 5 m3 with respect to 100 g/m3?
A. 1
B. 5
C. 10
D. 1
23.What is the specific gravity of O2 at 27oC and 60 Pa with respect to 1 Kg/m3?
A. 0.15
B. 0.28
C. 0.54
D. 0.15
24.What is the specific gravity of N2 at 27oC and 6 Pa with respect to 0.1 Kg/m3?
A. 0.16
B. 0.33
C. 0.51
D. 0.16
25.Which of the following is the unit of flow rate?
A. Kg/s
B. Liters/s
C. Moles/s
D. Kg/s
26.Which of the following is not conserved for the flow of an incompressible liquid in a pipe with variable area?
A. Mass
B. Volume
C. Velocity
D. Mass
27.What is the mass flow rate of a liquid flowing through a pipe of which 100 grams of water was collected in 10 seconds?
A. 0.01 kg/s
B. 0.05 kg/s
C. 0.1 kg/s
D. 0.01 kg/s
28.What is the volumetric flow rate if 100 kg of water is collected in 10 seconds?
A. 0.1 m3/s
B. 0.2 m3/s
C. 0.01 m3/s
D. 0.1 m3/s
29.The velocity of water in a pipe of area 5 m2 is 10 m/s, what will be the flow rate of water?
A. 25 m3/s
B. 50 m3/s
C. 75 m3/s
D. 25 m3/s
30.A liquid of density 0.1 kg/m3 is flowing through a pipe at a rate of 15 kg/s, what will be the area of the pipe if the fluid velocity is 5 m/s?
A. 30 m2
B. 45 m2
C. 75 m2
D. 30 m2
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