Quiz Questions Practice Chemical Engineering - Set 07 Chemical Engg. Quiz Quiz Questions - Set 07 01. When dry bulb temperature & wet bulb temperature of moist air is the same, it means that the (A) Partial pressure of water vapour is less than the total pressure (B) Humidity is less than 100% & dew point temperature of air has not reached (C) Dew point temperature of air has not reached & air is not saturated fully (D) Air is fully saturated 02. LASER (A) Stands for Light Amplification by Stimulated Emission of Radiation (B) Has the same intensity as visible light (C) Can’t be used for cutting metals (D) None of these 03. pH value of rain water in India ranges from (A) 5.5 to 7.5 (B) 8 to 9.5 (C) 3.5 to 5 (D) 9.5 to 10.5 04. The ratio of coil diameter to wire diameter of a spring is called the spring (A) Index (B) Deflection (C) Form co-efficient (D) None of these 05. Lime contains about 90% CaO Percentage CaO present in limestone is about (A) 25 (B) 50 (C) 70 (D) 90 06. The forms in which various metals and non metals occur in nature are called minerals. Which of the following is not a metallic ferrous mineral? (A) Cassiterite (B) Sphlerite (C) Chalcopyrite (D) Calcite 07. Floating control action (A) Moves the final control element at constant speed in either direction in response to an error signal (B) Changes the position of the final control element from on to off (C) Is used to counteract rapid load changes (D) None of these 08. The function of a nozzle provided in steam turbine is to (A) Throttle down (i.e., reduce) the pressure of steam (B) Convert internal energy into kinetic energy (C) Increase the velocity of steam (D) All (a), (b) & (c) 09. Heat treatment of steel is done mainly to change its (A) Mechanical properties (B) Physical properties (C) Chemical composition (D) All 'a', 'b' & 'c' 10. Material having maximum density is (A) Plutonium (B) Osmium (C) Titanium (D) Uranium 11. Swaging is a/an __________ operation. (A) Piercing (B) Forging (C) Extrusion (D) Drawing 12. Streaklines, streamlines & pathlines are almost identical for __________ fluid flow. (A) Ideal (B) Uniform (C) Steady (D) None of these 13. Which of the following absorbs maximum heat in a high pressure boiler? (A) Economiser (B) Steam superheater (C) Air preheater (D) Furnace water wall 14. The most important material handling system in an integrated steel plant is the (A) Belt conveyor (B) Diesel locomotive (C) Truck (D) Overhead hoists & cranes 15. __________ number is sometimes used in place of Grashoff number in free convection heat transfer. (A) Stanton (B) Brinkman (C) Rayleigh (D) Nusselt Submit Test Next Quiz Tests: Set 01 Set 02 Set 03 Set 04 Set 05 Set 06 Set 07 Set 08 Set 09 Set 10 Set 11 Set 12 Set 13
