Q. Which of the following has the highest density and the lowest melting point ?

View solution

Q. Electrolytes conduct electric current by

View solution

Q. To improve the machinability of steel by its softening, it is subjected to

View solution

Q. A material expanding freely due to heating will develop __________ stress.

View solution

Q. A machine having assumed life of 20 years is purchased for Rs 32000/-. Its scrap value at the end of its life is Rs 8000/-. If the depreciation is calculated by diminishing balance method, then percentage reduction in its value at the end of first year is __________ percent.

View solution

Q. More than 1000 tons refrigeration capacity plants are usually of __________ type.

View solution

Q. Pick out the wrong statement.

View solution

Q. The increase in hardness of metal due to its cold working is termed as the __________ hardening.

View solution

Q. Gas carrying pipelines are best joined by

View solution

Q. Scab is a defect developed during __________ of metals.

View solution

Q. Pick out the wrong statement about powder metallurgy technique.

View solution

Q. A floating body oscillates about its __________ when it is displaced slightly.

View solution

Q. Which of the following relatively employs the highest heat transfer surface area in a high pressure boiler ?

View solution

Q. Ester is formed, when an alcohol reacts with

View solution

Q. Which of the following accounts for maximum loss of energy in a coal fired boiler ?

View solution

Q. Presence of sulphur in the fuel fired in a furnace

View solution

Q. Boiling temperature of carbon dioxide at atmospheric pressure is __________ °C.

View solution

Q. Eutectoid reaction for iron-carbon system occurs at a temperature of __________ °C.

View solution

Q. A thermally thin body is the one for which

View solution

Q. Air refrigeration cycle is used in the air crafts, because of

View solution