Q. A process of production of water gas is carried out at ________

View solution

Q. How is biogas prepared?

View solution

Q. What is the maximum permissible amount of ash on carbonization after coal is washed?

View solution

Q. What is the solid residue that remains after heating of coal in the absence of air?

View solution

Q. What is the level of fineness to be achieved in crushed coal?

View solution

Q. For how long must coke be burnt?

View solution

Q. What is the appearance of oven coke?

View solution

Q. Which of the following factors are not used to evaluate the quality of coke?

View solution

Q. Which of the following is not an advantage of coke over coal?

View solution

Q. What is the temperature at which low-temperature coke is prepared?

View solution

Q. What is high-temperature coke used for?

View solution

Q. ________ is produced due to a chemical reaction between two or more substances.

View solution

Q. Neoprene was originally known as ________

View solution

Q. Which of the following is not an application of synthetic resins?

View solution

Q. What is Portland cement primarily composed of?

View solution

Q. At what temperature is limestone heated to make Portland cement?

View solution

Q. The hardening process of Portland cement is known as _______

View solution

Q. After burning of raw materials, Portland cement involves blending with ______

View solution

Q. Which of the following cement are not used as a cement replacement?

View solution

Q. What is the specific gravity of Portland cement?

View solution