Chemical Engineering- CH 2013 GATE Paper (Practice Test) - GATE MCQ

"All engineering students" "should learn mechanics", "mathematics and" "how to do computation."
                I                                          II                                  III                              IV
Which of the above underlined parts of the sentence is not appropriate?

Select the pair that best expresses a relationship similar to that expressed in the
pair:

water: pipe::

Q. No. 6 – 10 Carry Two Marks Each

Q.

Velocity of an object fired directly in upward direction is given by V = 80 − 32 t,
where t (time) is in seconds. When will the velocity be between 32 m/sec and 64
m/sec?

In a factory, two machines M1 and M2 manufacture 60% and 40% of the autocomponents respectively. Out of the total production, 2% of M1 and 3% of M2 are found to be defective. If a randomly drawn autocomponent from the combined lot is found defective, what is the probability that it was manufactured
by M2?

Following table gives data on tourists from different countries visiting India in the
year 2011.

Which two countries contributed to the one third of the total number of tourists
who visited India in 2011?

If |−2X + 9| = 3 then the possible value of |−X| − X² would be:

All professors are researchers
Some scientists are professors
Which of the given conclusions is logically valid and is inferred from the above
arguments:

Q. No. 11 – 25 Carry One Mark Each

Q.

The number of emails received on six consecutive days is 11, 9, 18, 18, 4 and 15,
respectively.

What are the median and the mode for these data?

For two rolls of a fair die, the probability of getting a 4 in the first roll and a
number less than 4 in the second roll, up to 3 digits after the decimal point, is _______

Imp : you should answer only the numeric value

Which of the following statements are TRUE?
P. The eigen values of a symmetric matrix are real
Q. The value of the determinant of an orthogonal matrix can only be +1
R. The transpose of a square matrix A has the same eigen values as those of A
S. The inverse of an ‘n × n’ matrix exists if and only if the rank is less than ‘n’

Evaluate

(Note: C is a constant of integration)

A gaseous system contains H2, I2, and HI, which participate in the gas-phase
reaction

At a state of reaction equilibrium, the number of thermodynamic degrees of
freedom is

Imp : you should answer only the numeric value

The thermodynamic state of a closed system containing a pure fluid changes from
(T1, p1) to (T2, p2), where T and p denote the temperature and pressure,
respectively. Let Q denote the heat absorbed (> 0 if absorbed by the system) and
W the work done (> 0 if done by the system). Neglect changes in kinetic and
potential energies. Which one of the following is CORRECT?

An equation of state is explicit in pressure p and cubic in the specific volume v. At
the critical point ‘c’, the isotherm passing through ‘c’ satisfies

The units of the isothermal compressibility are

An open tank contains two immiscible liquids of densities (800 kg/m³ and 1000 kg/m³) as shown in the figure. If g = 10 m/s², under static conditions, the gauge pressure at the bottom of the tank in Pa is _____________

Important : you should answer only the numeric value
 

The apparent viscosity of a fluid is given by  is the velocity gradient. The fluid is

The mass balance for a fluid with density (ρ) and velocity vector is 

An incompressible Newtonian fluid, filled in an annular gap between two concentric cylinders of radii R₁ and R₂ as shown in the figure, is flowing under steady state conditions. The outer cylinder is rotating with an angular velocity of ? while the inner cylinder is stationary. Given that ( R₁-R₂)  ? R₁ the profile of the θ -component of the velocity V_θ can be approximated by,

For a Newtonian fluid flowing in a circular pipe under steady state conditions in
fully developed laminar flow, the Fanning friction factor is

In the Tyler standard screen scale series, when the mesh number increases from
3 mesh to 10 mesh, then

Taking the acceleration due to gravity to be 10 m/s², the separation factor of a cyclone 0.5 m in diameter and having a tangential velocity of 20 m/s near the wall is_____

Important : you should answer only the numeric value

The effectiveness of a heat exchanger in the ε − NTU method is defined as

In a pool boiling experiment, the following phenomena were observed.
P. Natural convection
Q. Film boiling
R. Transition boiling
S. Nucleate boiling
What was the CORRECT sequence of their occurrence?

A hole of area 1 cm² is opened on the surface of a large spherical cavity whose inside temperature is maintained at 727 °C. The value of Stefan-Boltzmann constant is 5.67×10^-8 W/m2-K⁴. Assuming black body radiation, the rate at which the energy is emitted (in W) by the cavity through the hole, up to 3 digits after the decimal point, is __________

Important : you should answer only the numeric value

The packing of an existing absorption tower is replaced with a new type of packing. The height of the packing and the inlet conditions are maintained the same as before. Tests reveal that the number of transfer units is lower than before. This indicates that the tower with the new packing, when compared to
that with the old packing, will

A wet solid is dried over a long period of time by unsaturated air of nonzero constant relative humidity. The moisture content eventually attained by the solid is termed as the