Question

Statement (I): Heat carried away by hot gases in chimney draught is much greater than the work required for lifting the same gases through the height of the chimney. Yet artificial draught is not preferred.

Statement (II): Artificial draught involves large initial costs as well as large maintenance costs.
1. Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)
2. Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)
3. Statement (I) is true but Statement (II) is false
4. Statement (I) is false but Statement (II) is true

Answer 1

Correct Answer - Option 1 : Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)

Explanation:

Heat carried away by hot gases in chimney draught is much greater than the work required for lifting the same gases through the height of the chimney. Yet artificial draught is not preferred.

Hence statement I is correct.

The choice of the chimney or artificial draught is application is specific.

The artificial draft requires the installation of an FD & and an ID fan and some other accessories.

The installation and maintenance of this equipment are very costly affairs.

Hence statement II is also correct and it is the correct explanation of statement I.