4) Which of the following statement is wrong ?

5) A grate, in a boiler, is a place in the combustion chamber upon which fuel (wood or coal) is burnt.

6) Loeffler boiler is a water tube boiler using a forced circulation of water.

7) La-mont boiler, is a high pressure water tube steam boiler working on forced circulation.

8) The function of a connecting rod is not to convert reciprocating motion of the piston into rotary motion.