60 Construction Materials Chapter Wise McQ Test of 25 Question #8 Construction Materials Chapter Wise McQ Test of 25 Question for PSC, NEC, UPSC, SSC and Many more. 1 / 25 1. Which of the following oxides is present in highest proportion in ordinary Portland cement? A. NaO B. MgO C. CaO D. SiO2 2 / 25 2. Maximum permissible unit of magnesia concentration in ordinary Portland cement is A. 2% B. 4% C. 6% D. 8% 3 / 25 3. Loss of ignition in cement should not exceed A. 1% B. 4% C. 8% D. 12% 4 / 25 4. The main ingredients of Portland cement are A. lime and silica B. lime and alumina C. silica and alumina D. lime and iron 5 / 25 5. Which of the following is ingredient of cement? A. lime B. silica C. alumina D. all of the above 6 / 25 6. The commonly used raw material for manufacture of cement is A. Slate B. Sand stone C. Lime stone D. basalt 7 / 25 7. Ordinary Portland cement is manufactured by burning in a kiln the following material A. limestone and gypsum B. limestone and clay C. limestone and sand D. limestone and alumina 8 / 25 8. Ingredients are mixed in ……….. during manufacture of cement. A. ball mill B. tube mill C. rotary kiln D. batching plant 9 / 25 9. During production of cement, raw materials are mixed in A. Ball mill B. Pug mill C. Rice mill D. Cement mill 10 / 25 10. Clinker is grinded in ……………….. during manufacture of cement. A. bull mill B. tube mill C. rotary kiln D. batching plant 11 / 25 11. Size of clinker is A. 0.3 to 2.5 cm B. 2.5 to 5.0 cm C. 5.0 to 7.5 cm D. 7.5 to 10.0 cm 12 / 25 12. Gypsum consists of A. H2S and CO2 B. CaSO4 and H2O C. lime and H2O D. CO2 and calcium 13 / 25 13. To retard the initial setting time of cement, the compound responsible, is A. Tricalcium silicate B. Gypsum C. Di-calcium silicate D. Tri calcium aluminate 14 / 25 14. To increase initial setting time of cement, amount of gypsum added is A. 1 to 2 % B. 2 to 3 % C. 3 to 5 % D. 5 to 7 % 15 / 25 15. Normally………….. gypsum is used in concrete. A. 2% to 4% B. 2% to 8% C. 2% to 9% D. 3% to 5% 16 / 25 16. Gypsum is added to cement for reducing the fast reacting property of A. Dicalcium silicate B. Tricalcium silicate C. Tricalcium aluminate D. Tetra calcium alumino ferrite 17 / 25 17. Gypsum is a A. Slow setting material B. Quick setting material C. Setting agent D. Heat resistant material 18 / 25 18. Setting time of cement can be increased by addition of A. Sodium B. Gypsum C. Calcium chloride D. Hydrogen peroxide 19 / 25 19. The ingredient added in the manufacturing process to control the setting time of cement is: A. magnesium sulphate B. free lime C. gypsum D. free lime 20 / 25 20. Dry process of manufacturing cement has become obsolete, because in comparison to wet process A. It is slow and costly B. The quantity of cement produced by it is inferior C. It is difficult to maintain the correct proportions of constituents D. All of the above 21 / 25 21. When water is added in the cement, compounds of cement start to react with water, This is called A. setting of cement B. hardening of cement C. hydration of cement D. all of the above 22 / 25 22. Chemical reaction between water and cement compounds is known as A. hydration B. titration C. precipitation D. abstraction 23 / 25 23. What is hydration of cement? A. Chemical reaction of cement with acid B. Chemical reaction of cement with water C. Chemical reaction of cement with base D. Chemical reaction of cement with salt, and acid 24 / 25 24. Amount of Tri-Calcium Silicate (C3S) in Ordinary Portland cement is A. 50% B. 40% C. 32% D. 10% 25 / 25 25. Pick up the compound responsible for early strength of cement from the following: A. Tetra-calcium alumino-ferrite B. Tricalcium silicate C. Tricalcium aluminate D. Dicalcium silicate Your score is The average score is 62% 0% Restart quiz Exit civil engineerconstruction materialsmcqcivilmock testnecpscupsc
