Could You Pass Ecat Exam?

10 Questions | By Zlatanaleksic | Last updated: Mar 21, 2022 | Total Attempts: 144

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Engineering College Admission Test (ECAT) is conducted in Pakistan each year for Pre-Engineering students and is conducted by University of Engineering and Technologyin Punjab. Give it a go and try out this small test!

Questions and Answers

1.

An incompressible fluid flows steadily through a cylindrical pipe, which has radius '2r' at point 'A' and radius 'r' at 'B' along the direction of the flow. If the velocity at point 'A' is 'v', its velocity at point 'B' is?
- A.
  
  4V
- B.
  
  2V
- C.
  
  V
- D.
  
  V/2
2.

A hydraulic automobile lift is designed to lift cars with a maximum mass of 3000 kg. The area of cross-section of the piston carrying the load is 425 cm2. What maximum pressure would the smaller piston have to bear? (Given, g = 9.8 ms-2).
- A.
  
  69.2 Nm-2
- B.
  
  6.92 x 105 Nm-2
- C.
  
  3.46 x 105 Nm-2
- D.
  
  6.92 x 106 Nm-2
3.

For a sphere moving in a viscuous medium, if the speed is increased by 10 times the drag force?
- A.
  
  Increases by 5 times
- B.
  
  Increases by 10 times
- C.
  
  Cannot answer with given information
- D.
  
  Remains same
4.

Which of the following is the most accurate definition of a solution?
- A.
  
  A homogeneous mixture of two or more kinds of same substances
- B.
  
  A mixture of two or more kinds of different substances
- C.
  
  A heterogeneous mixture of two or more kinds of different substances
- D.
  
  A homogeneous mixture of two or more kinds of different substances
5.

Concentration in terms of percentage weight/weight is given by?
- A.
  
  Weight of the solute dissolved per one kg of the solution
- B.
  
  Weight of the solute dissolved per 100 g of the solution
- C.
  
  Weight of the solute dissolved per 1000 parts by weight of the solution
- D.
  
  Weight of the solute dissolved per 100 parts by weight of the solution
6.

The vapour pressure of a dilute solution of a solute is not influenced by?
- A.
  
  Melting point of the solute
- B.
  
  Degree of dissociation of the solute
- C.
  
  Mole fraction of the solute
- D.
  
  Temperature of the solution
7.
Set of natural numbers is closed with respect to?
- Addition
- Multiplication
- Subtraction
- A.
  
  I, II and III
- B.
  
  II only
- C.
  
  I and II only
- D.
  
  I only
8.

X + 2 is a factor of?
- A.
  
  X4 + 2
- B.
  
  X4 – X2 + 12
- C.
  
  X4 – 2X3 – X + 2
- D.
  
  X4 + 2X3 – X – 2
9.

A 4 g sugar cube (Sucrose: C₁₂H₂₂O₁₁) is dissolved in 0.5 kg of water. What is the molality of the sugar solution?
- A.
  
  0.023 mol/kg
- B.
  
  0.117 mol/kg
- C.
  
  0.21 mol/kg
- D.
  
  1.2 mol/kg
10.

Which of the following is a definition of Rault's law?
- A.
  
  Increase of vapour pressure is directly proportional to the mole fraction of solvent
- B.
  
  Lowering of vapour pressure is directly proportional to the mole fraction of solute
- C.
  
  Increase of vapour pressure is directly proportional to the mole fraction of solute
- D.
  
  Lowering of vapour pressure is directly proportional to the mole fraction of solvent