Home

What is the correct answer?

4

Mho's scale of hardness, which consists of 10 standard minerals is used for the measurement of __________ hardness.

A. Scratch

B. Indentation

C. Dynamic

D. Rebound

Correct Answer :

A. Scratch


Related Questions

Which of the following is not the function of a volute casing provided… The amount of water evaporated in kg per kg of fuel burnt in a boiler… Heat transfer to the water wall in a high pressure water wall type boiler… The process of removal of scale formed during hot rolling of steel is… The softness or hardness of a grinding wheel depends upon the type & amount… The co-ordination number in simple cubic structure is Diameter of the rivet to be provided on a 20 mm. thick boiler plate will… Temperature of hot gases flowing in a pipe is measured by a thermocouple… Addition of silicon to cast iron Sand used to stop the green sand from sticking to the pattern is termed… A gas which is collected over water becomes moistened due to water vapor,… Stellite is a __________ material. As the fluid flow rate increases, the float of the Rotameter Which of the following is a commonly used manometric liquid for low pressure… Addition of small amount of __________ to grey cast iron is done to produce… The emf of a Deniell cell Zn | Zn2+ || Cu2+ | Cu can be increased by Pick out the wrong statement. The most detrimental impurity in high pressure boiler feed water is While the thermosetting polymers are amorphous in nature, the thermoplastic… Case hardening of a material is The concentration of (H+) ions is 4 x 10-5 in a solution. Then pH of the… In chemical dehumidification of air Boiler tube size is specified by its thickness and __________ diameter. Laser welding is widely employed in the __________ industries. Steel & cast iron pipes are produced by __________ casting. The Al2O3 content of cryolite in Hall- Heroult cell is maintained between… Machinability of hard alloys and tool steels is improved by Thermit welding is categorised as the __________ welding. Which of the following phenomenon/ phenomena is/are diffusion controlled? The thermodynamic law, = constant, is not followed by the