Description : The particle size of silt
Last Answer : Ans. 0.02 – 0.002
Description : The particle size of fine sand
Last Answer : Ans. 0.2 -0.02 mm
Description : According to IISS, the particle size of course sand
Last Answer : Ans. 2 - 0.2 mm
Description : Black soil contains the clay mineral
Last Answer : Ans. Montmorillonite clay (2:1)
Description : The relative proportion of sand, silt and clay is termed as
Last Answer : Ans. Soil texture
Description : The example of 2 : 1 type silicate clay minerals are
Last Answer : Ans. Montmorillonite, Vermiculite and Illite
Description : In diffusion, particle/molecules moves from region of
Last Answer : Ans. Higher to lower concentration
Description : Commonly followed soil particle classified in India is
Last Answer : Ans. International Society of Soil Science (ISSS)
Description : Widely accepted fixed value of particle density is
Last Answer : Ans. 2.65 g/cc
Description : The formulae of particle density of soil
Last Answer : Ans. PD (g/cc) =
Description : The technique of reducing the size of replication over a number of blocks at the cost of loosing some informations on same effect
Last Answer : Ans. Confounding Design
Description : The test used for comparing two means when sample size is small (up to 30)
Last Answer : Ans. ‘T’ test
Description : For a group of 10-25, people use flash cards of size
Last Answer : Ans. 10"x12" (25 cm x 30 cm)
Description : Mostly widely used pamphlet size
Last Answer : Ans. 12 to 24 pages
Description : The most common size of poster
Last Answer : Ans. 50cm x 75cm
Description : The most common pit size for fruit planting
Last Answer : Ans. 1 m × 1 m × 1 m
Description : The irreversible change in any plant part (s) with respect to size, form, weight, volume etc.
Last Answer : Ans. Growth
Description : An average size of rain drop
Last Answer : Ans. 2 mm dia
Description : Which of the following is the correct order of increasing size of the grains of soil particles? 1. Clay 2. Silt 3. Sand 4. Gravel (a) BCDA (b) ABCD (c) DCBA (d) ADCB
Last Answer : Ans: (b)
Description : Bucket elevators are not suitable for the vertical lifting of __________ materials. (A) Fine (e.g. - 200 mesh size coal) (B) Sticky (e.g. clay paste) (C) Small lumpy (e.g. grains and sand) (D) Free flowing
Last Answer : (B) Sticky (e.g. clay paste
Description : The size of clay particles are— (A) 1•0 mm (B) 0•2 – 0•02 mm (C) < 0•02 mm (D) < 0•002 mm
Last Answer : (D) < 0•002 mm
Description : Maximum size of clay particles is: (A) 0.002 mm (B) 0.04 mm (C) 0.06 mm (D) 0.08 mm
Last Answer : (A) 0.002 mm
Description : Select the incorrect statement. (A) Effective cohesion of a soil can never have a negative value. (B) Effective angle of internal friction for coarse grained soils is rarely below 30°. (C ... (D) Effective angle of internal friction is a complicated function of mineralogy and clay size content.
Last Answer : Answer: Option A
Description : For a given size of bucket, the ideal output of a dragline will be least in (A) Moist loam (B) Sand and gravel (C) Good common earth (D) Wet sticky clay
Last Answer : (D) Wet sticky clay
Description : For which of the following materials, the output of power shovels for a fixed shovel size will be maximum (A) Moist loam (B) Good common earth (C) Well blasted rock (D) Wet sticky clay
Last Answer : (A) Moist loam
Description : Particles of 0.002 mm size are that of (A) Clay (B) Sand (C) Gravel (D) None of these
Description : Consider the following statements: 1. The benefit of surcharge and depth of foundation is only marginal in case of footings on purely cohesive soils. 2. The bearing capacity of a footing in pure clay increases with increase in size of the ... , 2 & 3 (b) 1 & 2 only (c) 2 & 3 only (d) 1 & 3 only
Last Answer : (d) 1 & 3 only
Description : When a potter makes pots of different size and shape from kneaded clay. This change in shape and size is due to ________. a) force b)pressure c)area d)direction
Last Answer : a) force
Description : Assertion :- Filtration of colloidal particles is not possible by filter paper. Reason :- Size of colloidal particle is less than filter paper pores.
Last Answer : Assertion :- Filtration of colloidal particles is not possible by filter paper. Reason :- Size of ... D. If both Assertion & Reason are False.
Description : How does particle size affect the time it takes to dissolve in water?
Last Answer : The smaller the particle size, the surface area is larger and the dissolution is faster.
Description : What is the smallest particle size that normal vacuum filter will trap?
Last Answer : Normal filters will trap dust but may miss microparticles like peices of pollen
Description : The settlement of a particle in sedimentation tank, is affected by A. Velocity of flow B. Viscosity of water C. Size and shape of solid D. All the above
Last Answer : ANS: D
Description : Fick's law relates to (A) Energy consumption (B) Final particle size (C) Feed size (D) None of these
Last Answer : (A) Energy consumption
Description : Pick out the wrong statement. (A) Gape is the greatest distance between the crushing surfaces or the jaws (B) The angle of nip (2α) is the angle between roll faces at the level where they will ... Reduction ratio is the ratio of the maximum size of the particles in the feed to that in the product
Last Answer : (C) Crushing efficiency is the ratio of the energy absorbed by the solid to the surfaces energy created by crushing
Description : Jigging is a technique by which different particles can be (A) Separated by particle size (B) Separated by particle density (C) Separated by particle shape (D) Mixed
Last Answer : (A) Separated by particle size
Description : According to Bond crushing law, the work required to form particle of size 'D' from very large feed is (where (S/V)p and (S/V) f are surface to volume ratio of the product and feed respectively). (A) (S/V)p (B) √(S/V)p (C) (S/V) 2 p (D) (S/V) f
Last Answer : (B) √(S/V)
Description : Arrange the following size reduction equipment in the decreasing order of the average particle size produced by each of them. (A) Jaw crusher, Ball mill, Fluid energy mill (B) Ball mill, Jaw crusher, Fluid ... C) Fluid energy mill, Jaw crusher, Ball mill (D) Fluid energy mill, Ball mill, Jaw crusher
Last Answer : (A) Jaw crusher, Ball mill, Fluid energy mill
Description : The resistance offered by the filter used in a bag filter is proportional to (where, c = dust concentration, and s = particle size). (A) c/s (B) s/c (C) s . c (D) 1/s . c
Last Answer : (A) c/s
Description : Rittinger's crushing law states that (A) Work required to form a particle of any size is proportional to the square of the surface to volume ratio of the product (B) Work required to form a ... ) For a given machine and feed, crushing efficiency is dependent on the size of the feed & product
Last Answer : (C) Work required in crushing is proportional to the new surface created
Description : In a grinding operation, the limiting particle size is the size of the __________ particle in the sample. (A) Smallest (B) Largest (C) Either (A) or (B) (D) Neither (A) nor (B)
Last Answer : (D) Neither (A) nor (B)
Description : Bond crushing law (A) Calls for relatively less energy for the smaller product particles, than does the Rittinger law (B) Is less realistic in estimating the power requirements of commercial crushers ( ... (D) States that the work required for the crushing is proportional to the new surface created
Last Answer : (A) Calls for relatively less energy for the smaller product particles, than does the Rittinger law
Description : As particle size is reduced (A) Screening becomes progressively more difficult (B) Screening becomes progressively easier (C) Capacity and effectiveness of the screen is increased (D) None of these
Last Answer : (A) Screening becomes progressively more difficult
Description : Particle size range in which dust catcher (gravity settling chamber) works most effectively and efficiently is __________ microns. (A) < 5 (B) 10 to 25 (C) < 74 (D) > 1000
Last Answer : (C) < 74
Description : Leaching rate is independent of the (A) Agitation (B) Temperature (C) Particle size (D) None of these
Last Answer : (D) None of these
Description : Minimum fluidisation velocity for a specific system depends upon the (A) Particle size (B) Fluid viscosity (C) Density of both the particle & the fluid (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : A gas (density = 1.5 kg/m3 , viscosity = 2 10 -5 kg/m.s) flowing through a packed bed (particle size = 0.5 cm, porosity = 0.5) at a superficial velocity of 2 m/s causes a pressure drop of 8400 Pa/m. The ... flowing at 3 m/s will be (A) 8400 Pa/m (B) 12600 Pa/m (C) 18900 Pa/m (D) 16800 Pa/m
Last Answer : (B) 12600 Pa/m
Description : Slugging in a fluidised bed can be avoided by using (A) Tall narrow vessel (B) Deep bed of solids (C) Shallow beds of solids and proper choice of particle size (D) Very large particles
Last Answer : (C) Shallow beds of solids and proper choice of particle size
Description : If particle size is reduced then total surface area will be — a. Decreased b. Constant c. Increased d. None of these
Last Answer : c. Increased
Description : Brownian movement is prominent in the particle size range of __________ microns in case of settling of a particle in a fluid. (A) 2 to 3 (B) 0.01 to 0.10 (C) 200 to 300 (D) 100 to 1000
Last Answer : A) 2 to 3
Description : The terminal velocity of a solid spherical particle falling through a stationary fluid mass in the Stoke's law range is proportional to the (A) Inverse of fluid viscosity (B) Square of particle size (C) Difference in the densities of the particle & fluid (D) All (A), (B) and (C)