In chemical dehumidification process,

The sensible heat factor during cooling and dehumidification process is given by (where h₁ = Enthalpy of air entering the cooling coil, h₂ = Enthalpy of air leaving the cooling coil, and hA = Enthalpy of air at the end of dehumidification process)

A

(hA - h2)/ (h1 - h2)

B

(h2 - hA)/ (h1 - h2)

C

(h1 - h2)/ (hA - h2)

D

(hA - h1)/ (h2 - h1)

The sensible heat factor during cooling and dehumidification process is given by (where h₁ = Enthalpy of air entering the cooling coil, h₂ = Enthalpy of air leaving the cooling coil and h_A = Enthalpy of air at the end of dehumidification process)

A

$$\frac{{{{\text{h}}_{\text{A}}} - {{\text{h}}_2}}}{{{{\text{h}}_1} - {{\text{h}}_2}}}$$

B

$$\frac{{{{\text{h}}_2} - {{\text{h}}_{\text{A}}}}}{{{{\text{h}}_1} - {{\text{h}}_2}}}$$

C

$$\frac{{{{\text{h}}_1} - {{\text{h}}_2}}}{{{{\text{h}}_{\text{A}}} - {{\text{h}}_2}}}$$

D

$$\frac{{{{\text{h}}_{\text{A}}} - {{\text{h}}_1}}}{{{{\text{h}}_2} - {{\text{h}}_1}}}$$

Which are the correct combinations for psychrometry processes a Activated Alumina I Heating & Humidification b Water injection II Heating & Dehumidification c Steam injection III Cooling & Dehumidification d Hygroscopic IV Cooling & Humidification

A

(a) - I (b) - II (c) - III (d) - IV

B

(a) - III (b) - IV (c) - I (d) - II

C

(a) - IV (b) - III (c) - II (d) - I

D

(a) - II (b) - IV (c) - I (d) - III

How is permaculture farming different from conventional chemical farming? 1. Permaculture farming discourages monocultural practices but in conventional chemical farming, monoculture practices are predominant. 2. Conventional chemical farming can cause an increase in soil salinity but the occurrence of such phenomenon is not observed in permaculture farming. 3. Conventional chemical farming is easily possible in semi-arid regions but permaculture farming is not so easily possible in such regions. 4. Practice of mulching is very important in permaculture farming but not necessarily so conventional chemical farming Select the correct answer using the code given below.

A

1 and 3

B

1, 2 and 4

C

4 only

D

2 and 3

In chemical dehumidification process

A

Wet bulb temperature increases

B

Dry bulb temperature remains constant

C

Dew point temperature increases

D

Dry bulb temperature increases

Which of the following statements is/are not true?
1. Chemical weathering is most common in limestone rocks
2. Chemical weathering is most active in wet regions with higher temperature
3. Rain action is a form of chemical weathering
4. Exfoliation is a process of chemical weathering

A

1 and 4

B

2 and 3

C

1 and 2

D

4

In chemical dehumidification of air

A

Both specific humidity & dry bulb temperature increases

B

Both specific humidity & dry bulb temperature decreases

C

Specific humidity decreases & dry bulb temperature increases

D

Specific humidity increases & dry bulb temperature decreases

Which of the following parameters remains constant during chemical dehumidification?

A

Dry bulb temperature

B

Partial pressure of vapour

C

Wet bulb temperature

D

None of these

Chemical mixtures X consist of chemicals A and B in ratio of 1 : 3, Chemical Y consist of chemicals A and B in ratio of 3 : 2. Chemical X is present in vessel whose capacity is 2 / 5 times that of vessel in which chemical Y is present. Both the chemicals X and Y are mixed in a large container. What is % of concentration is present in final mixture as A?

A

40%

B

60%

C

50%

D

30%

E

None of the above

Product X is produced by mixing chemical A and chemical B in the ratio of 5 : 4. Chemical A is prepared by mixing two raw materials, P and Q, in the ratio of 1 : 3. Chemical B is prepared by mixing raw materials, Q and R, in the ratio of 2 : 1. Then the final mixture is prepared by mixing 8640 units of product X with water. If the concentration of the raw material Q in the final mixture is 50%, how much water had been added to product X?

A

3580

B

3670

C

6160

D

3680

In chemical dehumidification process,

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