Which of the following statements about airlift pumps are correct? Statement 1: In airlift pumps, the air is introduced above a liquid in pressure level and that pressure is used to discharge the liquid. Statement 2: Airlift pumps are used to convey powders in fluidized form.

In which system high pressure is used, Fluidized Catalytic Cracking(FCC) or Fluidized Catalytic Reforming(FCR) or Fluidized Combustion Chamber(FCCh)?

A

FCC

B

FCR

C

FCCh

D

All of the mentioned

A major amendment was made in 2008 in the Information Technology Act, 2000.
1. Section 66 A, which penalised sending of offensive messages was introduced
2. Section 18 regarding liability of the person, in charge, was introduced
3. Section 11 prohibiting the transmission of programmes was introduced
4. Section 69 gave authorities the power of interception or monitoring or decryption of any information was introduced
Which of the given options are correct for the above statement?

A

1 and 2

B

2 and 3

C

1 and 4

D

3 and 4

A Differential manometer is connected at the points A and Bat the centre of two pipes. The pipe A(left limb) contains a liquid of specific gravity = 1.5 while pipe B (right limb)contains a liquid of specific gravity 0.85. The pressure at A and B are .5 kgf/cm2 and 1.2 kgf/cm2 respectively. Find the difference in level of mercuru in the differential manometer. A is 2.5m above B and 5 m above the mercury in its own limb. B is 2.5 m above the mercury level in limb A.

A

12.7 cm

B

contains a liquid of specific gravity = 1.5 while pipe B (right lim[contains a liquid of specific gravity 0.85. The pressure at A and B are .5 kgf/cm2 and 1.2 kgf/cm2 respectively. Find the difference in level of mercuru in the differential manometer. A is 2.5m above B and 5 m above the mercury in its own limb. B is 2.5 m above the mercury level in limb A. a) 12.7 cm [ 25.5 cm

C

6.28 cm

D

10.85 cm

The discharge through a large rectangular orifice is given by (where H₁ = Height of the liquid above the top of the orifice, H₂ = Height of the liquid above the bottom of the orifice, b = Breadth of the orifice and C_d = Coefficient of discharge)

A

$${\text{Q}} = \frac{2}{3} \times {{\text{C}}_{\text{d}}} \times {\text{b}}\sqrt {2{\text{g}}} \left( {{{\text{H}}_2} - {{\text{H}}_1}} \right)$$

B

$${\text{Q}} = \frac{2}{3} \times {{\text{C}}_{\text{d}}} \times {\text{b}}\sqrt {2{\text{g}}} \left( {{\text{H}}_2^{\frac{1}{2}} - {\text{H}}_1^{\frac{1}{2}}} \right)$$

C

$${\text{Q}} = \frac{2}{3} \times {{\text{C}}_{\text{d}}} \times {\text{b}}\sqrt {2{\text{g}}} \left( {{\text{H}}_2^{\frac{3}{2}} - {\text{H}}_1^{\frac{3}{2}}} \right)$$

D

$${\text{Q}} = \frac{2}{3} \times {{\text{C}}_{\text{d}}} \times {\text{b}}\sqrt {2{\text{g}}} \left( {{\text{H}}_2^2 - {\text{H}}_1^2} \right)$$

Six types of bioreactors are, Continuous Stirred Tank Bioreactors, Bubble Column Bioreactors, Airlift Bioreactors, Fluidized Bed Bioreactors, Packed Bed Bioreactors and ____________

A

Hollow fibre reactor

B

General purpose reactor

C

Assembly reactor

D

Photo bioreactor

For coating using plastic in fluidized bed, thermoplastic powders are always used, true or false?

A

True

B

False

Calculate the pressure of air at a height of 3500m from sea level where pressure and temperature of air are 10 N/cm2 and 25℃ respectively. The temperature lapse rate is given as 0.0065 ℃ /m. Take density of air at sea level equal to 1.2 kg/m3.

A

19.7 N/cm2

B

9.85 N/cm2

C

4.93 N/cm2

D

6.24 N/cm2

A large tank of height h is half-filled with a liquid of density ρ and other half-filled with a liquid of density 4ρ. A similar tank is half-filled with a liquid of density 2ρ and other-half filled with another liquid of density 3ρ as shown. What will be the ratio of the instantaneous velocities of discharge through a small opening at the base of the tanks? (assume that the diameter of the opening is negligible compared to the height of the liquid column in either of the tanks)

A

1 : 1

B

1 : 2

C

2 : 1

D

1 : 3

Which of the following statements are correct
1. Significance level is opposite to confidence level.
2. Significance level is complementary to confidence level.
3. Significance level is the rejection area.

A

Only 1

B

Both 1 and 2

C

Both 1 and 3

D

Both 2 and 3

Consider the following statements.
1. At any point inside the liquid the pressure exerted by the liquid is directly proportional to its depth from the free surface.
2. At every point and in every direction, the pressure exerted inside the liquid at rest is same.
Which of the statement(s) given above is/are correct?

A

Only 1

B

Only 2

C

Both 1 and 2

D

Neither 1 nor 2

Which of the following statements about airlift pumps are correct? Statement 1: In airlift pumps, the air is introduced above a liquid in pressure level and that pressure is used to discharge the liquid. Statement 2: Airlift pumps are used to convey powders in fluidized form.

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