36301. Coke oven regenerators are made of __________ bricks.
36302. Which of the following is universally employed as the low expansion metal in the bimetallic thermometer, which is an iron-nickel alloy containing 36% nickel and has very low co-efficient of expansion (l/20th of ordinary metals) ?
36303. In steering linkage another name for the drag link is
36304. The purpose of nitriding the steel is to
36305. In continuous filtration (at a constant pressure drop), filtrate flow rate varies inversely as the
36306. For sizing of fine materials, the most suitable equipment is a
36307. Which of the following is not categorised as a "mechanical operation" ?
36308. Which of the following is a pressure filter ?
36309. Tabular bowl centrifuges as compared to disk bowl centrifuges
36310. Pebble mills are tumbling mills widely used for grinding in the manufacture of paints & pigments and cosmetic industries, where iron contamination in the product is highly objectionable. Pebbles used in pebble mill are made of
36311. Filter aids like asbestos, kieselguhr, diatomaceous earth etc. are used to increase the porosity of the final filter cake & reducing the cake resistance during filtration. Filter aid is
36312. Which of the following relationships between co-efficinet of friction (μ) between rock & roll and a (half of the angle of nip) of the particle to be crushed is correct ?
36313. Pick out the wrong statement pertaining to the roll crushers.
36314. Which of the following is not an ultrafine grinder (colloid mill)?
36315. Two particles are called to be equal settling, if they are having the same.
36316. Which of the following is the most suitable for handling fibrous and dense slurries ?
36317. __________ centrifuge is normally used in sugar mills.
36318. Solid particles separation based on the difference in their flow velocities through fluids is termed as the
36319. Diatomaceous earth is a/an
36320. The distribution given by microscopic analysis of powder is
36321. Number of particles in a crushed solid sample is given by (where, m = mass of particles in a sample, Vp = volume of one particle, ρ= density of particles)
36322. For a non-spherical particle, the sphericity
36323. In washing type plate and frame filter press, the ratio of washing rate to the final filtrate rate is
36324. Ball mills and tube mills with flint or porcelain balls are used for size reduction of
36325. Size reduction of __________ is accomplished in steam heated rollers and roll crushers.
36326. The capacity of a belt conveyor depends upon two factors. If one is the cross-section of the load, the other is the __________ of the belt.
36327. Which of the following is not a part of the Blake jaw crusher?
36328. If a force greater than that of gravity is used to separate solids & fluids of different densities, the process is termed as the
36329. Filter aid is used to
36330. Which of the following mineral dressing operations is termed as 'comminution'?
36331. The capacity of a pneumatic conveying system depends upon the
36332. Which part of the tyre contact with the road surface when the wheel rolls?
36333. Gravity settling process is not involved in the working of a
36334. Froth floatation is the most suitable for treating
36335. The energy required per unit mass to grind limestone particles of very large size to 100 μm is 12.7 kWh/ton. An estimate (using Bond's law) of the energy to grind the particles from a very large size to 50 μrn is
36336. Which of the following is the most suitable for cleaning of fine coal dust (<0.5 mm) ?
36337. In an engine stroke length is
36338. Range of compressibility co-efficient of the commercial compressible cake obtained in filtration operation is
36339. Highly viscous liquids & pastes are agitated by
36340. The value of 'angle of nip' is generally about
36341. Size reduction of the __________ can be suitably done by ball mills, crushing rolls and rod mills.
36342. Sulphuric acid mist is arrested by using a __________ scrubber.
36343. The main size reduction operation in ultrafine grinders is
36344. In case of a hammer crusher,
36345. Jigging is a technique by which different particles can be
36346. Crushing of mineral particles is accomplished in a 'cage mill', when one or more alloy steel bars are revolved in opposite directions. It is a type of __________ mill.
36347. Balls for ball mills are never made of
36348. 200 mesh screen means 200 openings per
36349. __________ is the most commonly used 'filter aid'.
36350. Energy consumed for crushing one ton of material ranges from __________ kWh.
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