Basic Important Knowledge for Civil Engineering Freshers
Q1. What is the minimum Crushing strength of a first-class brick?
Answer: The minimum Crushing strength of a first-class brick is 10.5 N/mm2
Q2. Name the main constituent of cement which is responsible for the initial setting of cement?
Answer: The main constituent of cement which is responsible for the initial setting of cement is Tricalcium Aluminate.
Q3. Name the most commonly used retarder in concrete?
Answer: The most commonly used retarder in concrete is Gypsum.
Q4. What is the percentage of moisture content in a well-seasoned timber?
Answer: The percentage of moisture content in a well-seasoned timber is 10 to 12 percent.
Q5. What is the standard proportion of lime and sand in the mortar normally used in brick construction?
Answer: The standard proportion of lime and sand in the mortar normally used in brick construction is 1:2.
Q6. What is the proportion of cement and sand for the plaster of the septic tank?
Answer: The proportion of cement and sand for the plaster of septic tank is 1:3 (1 part cement and 3 part sand).
Q7. What is the allowable freeboard in a septic tank?
Answer: The allowable freeboard in a septic tank is 300 m to 450 mm.
Q8. Among Deodar, Chir, Shishum, and Pine, Which of the flowing trees yields hardwood?
Answer: Shishum yields hardwood.
