Which of the following are the most widely used condensers in modern thermal power plants?

Which of the following power station is situated in Madhya Pradesh state? Satpura Thermal Power Station Shree Singaji Thermal Power Station Sanjay Gandhi Thermal Power Station Amarkantak Thermal Power Station

A

1, 2 and 3

B

1, 3 and 4

C

Only 1 and 4

D

All of these

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series. Bakrehswar Thermal Power Station, Bandel Thermal Power Station, Santaldih Thermal Power Station, Kolaghat Thermal Power Station, ?

A

Anpara Thermal Power Station

B

Anta Thermal Power Station

C

Ennore Thermal Power Station

D

Durgapur Thermal Power Station

Which of the following statement(s) is/are false regarding the modern periodic table? i. In the modern periodic table, the elements are arranged in decreasing order of their atomic numbers. ii. In the modern periodic table, the elements are arranged in increasing order of their atomic masses. iii. In the modern periodic table, isotopes are placed in adjacent groups. iv. In the modern periodic table, the elements are arranged in increasing order of their atomic numbers.

A

Only (i)

B

Only (iv)

C

(i), (ii) and (iv)

D

(i), (ii) and (iii)

Which of the following statements is/are false regarding modern periodic table?
1. Elements in the modern periodic table are arranged in decreasing order of their atomic numbers.
2. Elements in the modern periodic table are arranged in increasing order of their atomic masses.
3. In the modern periodic table, isotopes are placed in adjacent groups.
4. Elements in modern periodic table are arranged in increasing order of their atomic numbers.

A

only 1

B

only 4

C

1, 2 and 4

D

1, 2 and 3

Plants have been used as healers and health rejuvenators since times immemorial. More than half the drugs under clinical use owe their origin to plants. The Glossary of Indian Medicinal Plants lists 3000 plants. Which part of the plants is used most for medicinal properties ?

A

Roots

B

Bark

C

Leaves

D

Seeds

Consider the following statements and choose the correct answer:
1. Intense or strong light retards the growth of shoot
2. Shade plants are shorter and stockier than sun plants
3. Shade plants have dense covering of hairs while sun plants are less hairy
4. The stems of shade plants are taIler and more branched than that of sun plants

A

Only 1, 2 and 3 are true

B

Only 2 and 3 are true

C

Only 1 and 4 are true

D

Only 2, 3 and 4 are true

Heat exchangers are used in A. Condensers and boilers in steam plants B. Radiators C. Intercoolers and preheaters D. Condensers and evaporators in refrigerators and air conditioners

A

Only A

B

Only B

C

Only C

D

A, B, C and D

Read the following statements about coals. I. Lignite coals can be used in thermal power plants II. Super-anthracite coal are best for thermal power plants

A

Only I is correct

B

Only II is correct

C

I and II are correct

D

I and II are incorrect

In condensers used in thermal power plants, steam is normally used in shell side and cooling water on the tube side, because of the reason that

A

Compared to the mass flow rate of cooling water, the rate of condensation of steam is invariably smaller

B

Maintaining vacuum on tube side is more difficult than that on the shell side

C

Water velocity can be increased conveniently to increase the overall heat transfer co-efficient because of its lower specific volume compared to steam

D

Condenser can act as a storage unit for condensed steam

Surface condensers require more power for water pumping than jet condensers.

A

True

B

False

Which of the following are the most widely used condensers in modern thermal power plants?

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