Description : One poise (unit of absolute/dynamic viscosity) is equivalent to one (A) gm/cm2 . sec (B) gm/cm. sec (C) cm2 /sec (D) m2 /sec
Last Answer : (B) gm/cm. sec
Description : Which of the following could be the unit of rotational inertia of a body in CGS system? a.cm4 b.gm-cm2 c.107 dynes d.kg-cm2 e.gm-cm4
Last Answer : b. gm-cm2
Description : . One stoke (unit of kinematic viscosity) is equivalent to (A) 1 cm2 /second (B) 1 m2 /second (C) 1 gm/cm. second (D) 1 kg. m/second
Last Answer : (A) 1 cm2 /second
Description : The unit of specific cake resistance is (A) gm/cm2 (B) cm/gm (C) cm/gm2 (D) gm/gm
Last Answer : (A) gm/cm2 (
Description : The unit of volumetric diffusivity is (A) cm2 /sec (B) cm/sec (C) cm3 /sec (D) cm2 /sec
Last Answer : (A) cm2 /sec
Description : Ordinary Portland cement requires a specific surface of [ A ] 1250 cm2/gm [ B ] 2250 cm 2/gm [ C ] 3250 cm 2/gm [ D ] 3500 cm 2/gm
Last Answer : [ B ] 2250 cm 2/gm
Description : The binary diffusivity in gases at atmospheric conditions is about (A) 10 -9 cm/sec (B) 10 -1 cm2 /sec (C) 10 -3 sec/cm (D) 10 -4 cm2 /sec
Last Answer : (B) 10 -1 cm2 /sec
Description : A fluid (µ/ρ) = 0.01 cm2 /sec is moving at critical flow condition (NRe = 2100) through a pipe of dia 3 cms. Velocity of flow is __________ cm/sec. (A) 7 (B) 700 (C) 7000 (D) 630
Last Answer : (A) 7
Description : Which of the following is not a dimension-less group used in catalysis? (Where, D = dispersion co-efficient, cm2 /sec.D1 = diffusion co-efficient; cm2 /sec L = length of the reactor, cm t = time, sec, v = volumetric ... (D/vL) (B) Reduced time (vt/V) (C) Thiele modulus L √(k/D1 ) (D) None of these
Last Answer : (D) None of these
Description : A ball weighing 250 gm is thrown vertically upwards with a velocity of 980 cm/sec. The time that the ball will take to return back to earth would be a.1 sec b.4 sec c.2 sec d.5 sec e.3 sec
Last Answer : c. 2 sec
Description : The coefficient of permeability of soils, is generally expressed in (A) cm/sec (B) cm/minute (C) cm2 /sec (D) cm2 /minute
Last Answer : (A) cm/sec
Description : The compressive strength of cement should not be less than about 110Kg/cm2 after three days & not less than 170Kg/cm2 after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm2 /gm. (A) 800 (B) 1600 (C) 4000 (D) 8500
Last Answer : (B) 1600
Description : In CGS System the unit of work is?
Last Answer : erg [1 joule = 1047erg]
Description : The unit of dynamic viscosity in SI unit is (A) kg/m. sec (B) N/m2 (C) m2 /sec (D) m/N. sec
Last Answer : (A) kg/m. sec
Description : A dash pot consists of a cylinder 10 cm in diameter in which slides a piston 12 cm long having a radial clearance of 1 mm. The cylinder is filled with oil having a viscosity of 1 poise. What will be the resistance offered ... with a velocity of 3 cm/sec a.1090 kg b.100 kg c.10900 kg d.10 kg e.50 kg
Last Answer : c. 10900 kg
Description : If the specific gravity of a soil particle of 0.05 cm diameter is 2.67, its terminal velocity while settling in distilled water of viscosity, 0.01 poise, is (A) 0.2200 cm/sec (B) 0.2225 cm/sec (C) 0.2250 cm/sec (D) 0.2275 cm/sec
Last Answer : (D) 0.2275 cm/sec
Description : CGS unit of thrust is?
Last Answer : dyne /em2
Description : CGS unit of Force is -?
Last Answer : Dyne
Description : The unit of filter medium resistance is (A) cm-1 (B) gm/cm-1 (C) cm/gm-1 (D) gm-1
Last Answer : (A) cm-1
Description : The unit of viscosity is (A) Metres² per sec (B) kg-sec/metre (C) Newton-sec per metre² (D) Newton-sec per meter
Last Answer : Answer: Option B
Description : Research reactors are normally meant for (A) Producing high neutron flux 10 12 -10 13 neutrons/cm2 , sec and studying the effect of neutron bombardment on different materials (B) Accelerating the neutrons (C) Power generation (D) None of these
Last Answer : (A) Producing high neutron flux 10 12 -10 13 neutrons/cm2 , sec and studying the effect of neutron bombardment on different materials
Description : The rough value of diffusion co-efficient of water vapor into air at 25°C may be about __________ cm2 /sec. (A) 0.25 (B) 2.5 (C) 1.25 (D) 0.0025
Last Answer : (A) 0.25
Description : Pick out the wrong statement. (A) The binary diffusivity in liquids is of the order of 10 -5 cm2 /sec (B) Molecular diffusion in solid is much faster than that in liquids ( ... Poiseuille's law, the permeability decreases with increase in temperature for flow of a gas through a given capillary
Last Answer : (B) Molecular diffusion in solid is much faster than that in liquids
Description : Pick out the wrong conversion of absolute & kinematic viscosities. (A) 1 stoke = 1 cm2/sec (B) 1 N.sec/m2 = 10 paise (C) 1 stoke = 1 m2/sec (D) 1 m2/sec = 104 stokes
Last Answer : (C) 1 stoke = 1 m2/sec
Description : The unit of pressure in S.I. units is (a) kg/cm2 (b) mm of water column (c) pascal (d) dynes per square cm (e) bars
Last Answer : Answer : c
Description : In which system of units, gas bills are charged? A. SI B. CGS C. BTU D. None of Above
Last Answer : ANSWER: C
Description : Natural Gas In which system of units, gas bills are charged? A. SI B. CGS C. BTU D. None of Above
Description : In which system of units, gas bills are charged? A. SI B. CGS C. BTU (Answer) D. CNG
Last Answer : C. BTU (Answer)
Description : What is the full form of 'CGS' ? -How To ?
Last Answer : The full form of 'CGS' is Centimetre Gram Second
Last Answer : Chittagong Grammar School.
Description : Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are (A) 5°C and 1 kgf/cm2 (B) - 20°C and 1 kgf/cm2 (C) 0°C and 1 kgf/cm2 (D) 0°C and 3 kgf/cm
Last Answer : (A) 5°C and 1 kgf/cm
Description : Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butadiene rubber) are (A) 50°C and 3 - 4 kg/cm2 (B) 50°C and 1 kgf/cm2 (C) 250°C and 10 kgf/cm2 (D) 250°C and 1 kgf/cm
Last Answer : (A) 50°C and 3 - 4 kg/cm
Description : Absorption/scattering cross-section of an element is expressed in "barn", which is equivalent to (A) 10 -24 cm2 (B) 10 -12 cm (C) 1 Angstrom (D) 10 -24 cm
Last Answer : (A) 10 -24 cm
Description : 200 mesh screen means 200 openings per (A) cm2 (B) cm (C) inch (D) inch
Last Answer : (C) inch
Description : The effectiveness factor for large value of Thiele modulus [L√(K/D1 )] of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm2 /second). (A) L √(K/D1 ) (B) 1/[L√(K/D1 )] (C) 1 (D) ∞
Last Answer : (B) 1/[L√(K/D1 )]
Description : The units of dynamic or absolute viscosity are (A) Metres² per sec (B) kg sec/meter (C) Newton-sec per meter (D) Newton-sec² per meter
Last Answer : Answer: Option C
Description : The units of kinematic viscosity are (A) Metres² per sec (B) kg sec/metre (C) Newton-sec per metre (D) Newton-sec per metre
Last Answer : Answer: Option A
Description : A cube of wood supporting 200 gm mass just floats in water. When the mass is removed, the cube rises by 2 cm the side of the cube will be a.5 cm b.10 cm c.12.5 cm d.20 cm e.15 cm
Last Answer : a. 5 cm
Description : One joule is the energy required to (A) Raise the temperature of 1 gm of water by 1°C (B) Raise the temperature of 1 kg of water by 1°C (C) Move a mass of 1 gm by 1 cm distance by a force of 1 Newton (D) Move a mass of 1 kg by 1 m distance by a force of 1 Newton
Last Answer : Answer : D
Description : Rapid gravity filter can only remove turbidity of water upto (A) 15 to 25 gm/litre (B) 25 to 30 gm/litre (C) 30 to 35 cm/litre (D) 35 to 40 gm/litre
Last Answer : (D) 35 to 40 gm/litre
Description : Curved surface area of a cone is 308 cm2 and its slant height is 14 cm. Find (i) radius of the base -Maths 9th
Last Answer : Slant height of cone, l = 14 cm Let the radius of the cone be r. (i) We know, CSA of cone = πrl Given: Curved surface area of a cone is 308 cm2 (308 ) = (22/7) r 14 308 = 44 r r = 308 ... Total surface area of cone = 308+(22/7) 72 = 308+154 Therefore, the total surface area of the cone is 462 cm2.
Description : The curved surface area of a right circular cylinder of height 14 cm is 88 cm2. Find the diameter of the base of the cylinder. (Assume π =22/7 ) -Maths 9th
Last Answer : Height of cylinder, h = 14cm Let the diameter of the cylinder be d Curved surface area of cylinder = 88 cm2 We know that, formula to find Curved surface area of cylinder is 2πrh. So 2πrh =88 cm2 (r is the ... 88 cm2 2r = 2 cm d =2 cm Therefore, the diameter of the base of the cylinder is 2 cm.
Description : The area of a trapezium is 475 cm2 and the height is 19 cm. -Maths 9th
Last Answer : Let the length of one parallel side of trapezium is a. So length of other parallel side = a + 4 Given the area of trapezium = 475 & the height = 19 Now area of a trapezium = 21 height ... =23∴Length of smalle rparallel side of trapezium =23 & Length of other parallel side of trapezium = 23+4=27
Last Answer : According to question find the lengths of its two parallel sides
Description : The area of a rhombus 10 cm2 .If one if its diagonal is 4 cm,then find the other diagonal. -Maths 9th
Last Answer : hope its clear
Description : If the surface area of a box is 52 cm2 and you know that it is 4 cm wide and 2 cm long what is the height of the box (Hint Use the perimeter of the base to find the answer.)?
Last Answer : It is 3 cm high.
Description : ΔABC ~ ΔPQR. Area of ΔABC = 81 cm2 and area of ΔPQR =121 cm2. If altitudeAD = 9 cm, then PM is equal to (a) 9 cm (b) 11 cm (c) 10cm (d) None of these
Last Answer : (b) 11 cm
Description : The maximum pressure to which cast iron pipes may be subjected to, is (A) 3 kg/cm2 (B) 5 kg/cm2 (C) 7 kg/cm2 (D) 10 kg/cm
Last Answer : (C) 7 kg/cm