Description : In case of wet spinning of polymers, the polymer solution is forced through spinnerates into, a coagulating bath to give a filament form. Wet spinning is not used in case of the __________ fibres. (A) Viscose rayon (B) Acrylic (C) Polyvinyl acetate (D) Saturated polyeste
Last Answer : (D) Saturated polyeste
Description : Pick out the wrong statement. (A) Denier is defined as weight in gm of 9000 metres length of a fibre, while tex is defined as weight in gm of 1000 metres length of fibre (B) ... fibres are all prepared by wet spinning (D) Nylon fibres have greater water absorption capacity than polyester fibres
Last Answer : (C) Dacron fibres, acrylic fibres, viscose rayon fibres & cellulose acetate fibres are all prepared by wet spinning
Description : For platinum thermocouples, lead wires are made of (A) Copper & copper-nickel alloys (B) Copper & iron (C) Iron & nickel (D) Tin & nickel
Last Answer : (A) Copper & copper-nickel alloys
Description : Carbon disulphide is mainly used in the production of(A) Viscose rayon (B) Corundum (C) Plasticiser for unsaturated polyester (D) Paints
Last Answer : (A) Viscose rayon
Description : Viscose rayon (A) Cannot be made from sulphite pulp (B) Utilises H2SO4 , NaOH and CS2 during its manufacture (C) Cannot yield textile grade fibre (D) None of these
Last Answer : (B) Utilises H2SO4 , NaOH and CS2 during its manufacture
Description : Locomotive boiler tubes are made of __________ alloys. (A) Arsenic copper (B) Magnesium (C) Aluminium (D) Nickel
Last Answer : (A) Arsenic copper
Description : The high expansion metal normally used in the bimetallic thermometer is __________ temperature measurement. (A) Brass for low (B) Nickel alloys for high (C) Both 'a' & 'b' (D) Aluminium for all
Last Answer : (C) Both 'a' & 'b'
Description : Which of the following is not a natural fibre? (A) Silk (B) Viscose rayon (C) Wool (D) Cotton
Last Answer : (B) Viscose rayon
Description : Viscose rayon is (A) Cellulose nitrate (B) Regenerated cellulose nitrate (C) Regenerated cellulose acetate (D) None of these
Last Answer : (D) None of these
Description : In the manufacture of viscose rayon, the raw material used industrially is (A) Eucalyptus wood (B) Bamboo (C) Bagasse (D) Fine teak wood
Last Answer : (D) Fine teak wood
Description : Viscose rayon is chemically (A) Cellulose nitrate (B) Regenerated cellulose nitrate (C) Cellulose acetate (D) Regenerated cellulose acetate
Last Answer : (D) Regenerated cellulose acetate
Description : Refined acetic acid storage vessel are made of (A) Copper (B) Aluminium (C) High carbon steel (D) Nickel
Last Answer : (B) Aluminium
Description : Catalyst used in the production of high density polythene by low pressure Ziegler process is (A) Aluminium triethyl activated with TiCl4 (B) Platinum (C) Molybdenum (D) Nickel
Last Answer : (A) Aluminium triethyl activated with TiCl4
Description : Nickel (76%) and chromium (15%) alloys are termed as (A) Inconel (B) Monel (C) Aluminium bronzes (D) Brass
Last Answer : (A) Inconel
Description : Circular cross section machine parts which are symmetrical about the axis of rotation are made by hot (A) Piercing (B) Spinning (C) Drawing (D) Extrusion
Last Answer : Option B
Last Answer : Cotton lintus , bamboo pulp , wood pulp
Last Answer : Viscose rayon regenerated cellulosic fiber. That is to make cellulose cellulose with chemicals again. Some other regenerated fibers are modal , tensile.
Description : A polymeric substance used to make parachute is – (1) Rayon (2) Viscose (3) Cotton (4) Terylene
Last Answer : (2) Viscose Explanation: Viscose is a viscous organic liquid used to make rayon and cellophane. Viscose is also used as shorthand for Viscose Rayon, thus becoming synonymous with rayon, a soft man-made fibre commonly used in dresses, linings shirts, shorts, coats, jackets, and other outer wear.
Description : Retting is used in the processing of which of the following fibres: a. Cotton b. Linen c. Silk d. Viscose rayon
Last Answer : b. Linen
Description : Example of natural plant fibre: a. Silk b. Cotton c. Viscose rayon d. Polyester
Last Answer : b. Cotton
Description : A polymeric substance used to make parachute is (1) Rayon (2) Viscose (3) Cotton (4) Terylene
Last Answer : Viscose
Description : All alloys contain this element if they are amalga The element is: w) iron x) mercury y) gold z) platinum
Last Answer : ANSWER: X -- MERCURY
Description : Two alloys contain platinum and gold in the ratio of 1:2 and 1:3 respectively. A third alloy C is formed by mixing alloys one and alloy two in the ratio of 3:4. Find the percentage of gold in the mixture a) 79.2/7% b) 71.2/7% c) 73.2/7% d) 71.3/7% e) None of these
Last Answer : Answer: D Platinum = 1/3 and 1/4 gold = 2/3 and 3/4 Alloy one and two are mixed in the ratio of 3:4, so ratio of platinum and gold in final ratio – 2:5 So gold % = (5/7)*100 71.3/7%
Description : In a drilling process, the metal is removed by both shearing & extrusion. General purpose drills are made of (A) Stainless steel (B) Mild steel (C) High speed steel (D) High carbon steel
Last Answer : (C) High speed steel
Description : Catalyst used in catalytic reforming is (A) Platinum on alumina (B) Nickel (C) Iron (D) Aluminium chloride
Last Answer : (A) Platinum on alumina
Description : In case of dry spinning of polymers, the polymer solution in a volatile solvent is forced through the spinnerates into a warm air chamber, where the solvent evaporates leaving behind the polymer in the filament ... is used for __________ fibres. (A) Polythene (B) PVC (C) Rayon (D) Polyvinyl acetate
Last Answer : (B) PVC
Description : Polymerisation reactor used in the production of styrene butadiene rubber (SBR) is made of (A) Stainless steel or glass lined steel (B) Nickel clad steel (C) High silicon cast iron (D) Aluminium
Last Answer : (A) Stainless steel or glass lined steel
Description : Reactor used in the production of polyvinyl chloride (PVC) is made of (A) Nickel or glass lined steel (B) Aluminium (C) Tantalum (D) Lead
Last Answer : (A) Nickel or glass lined steel
Description : Ruby is an oxide of-----? A. silver B. gold C. platinum D. aluminium oxide (Answer)
Last Answer : D. aluminium oxide (Answer)
Description : Which of the following materials may prove unsuitable for handling acetic acid (glacial & anhydrous) at 40°C? (A) Silicone rubber, teflon, porcelain and wood (B) Nickel, monel, stainless steel and graphite (C) Aluminium, copper, high silicon iron (D) Brass, cast iron, mild steel and tin
Last Answer : (D) Brass, cast iron, mild steel and tin
Description : Which of the following material of construction may be recommended by a chemical engineer for handling a gaseous chlorine (dry or wet) stream in a fluid flow system? (A) High silicon iron, silicon rubber ... Mild steel and stainless steel (C) Cast iron, tin and aluminium (D) Copper, nickel and Monel
Last Answer : (A) High silicon iron, silicon rubber, Kel-F and Teflon
Description : Spark plugs, ignition tubes and electrodes are made of nickel __________ alloys. (A) Beryllium (B) Manganese (C) Copper (D) Iron
Last Answer : (B) Manganese
Description : Monel alloy is (A) The costliest of all the alloys of nickel (B) Not suitable for making kitchen utensils (C) Used for making steam valves and turbine blades as it resists steam attack at high temperature (D) Not used in cast and wrought forms
Last Answer : (C) Used for making steam valves and turbine blades as it resists steam attack at high temperature
Description : Principal alloying elements of cast tool alloys which have very high wear resistance & high temperature strength are (A) Cobalt, chromium & tungsten (B) Cobalt, chromium & nickel (C) Molybdenum, tungsten & chromium (D) Cobalt, zirconium & molybdenum
Last Answer : : Option A
Description : Cutter bar is made up of which material a) High grade steel. b) Low carbon alloy steel. c) Platinum. d) High speed tool steel
Last Answer : High grade steel
Description : Hot extrusion of aluminium is done in the temperature range of __________ °C. (A) 550-600 (B) 450-500 (C) 350-400 (D) 250-300
Last Answer : (C) 350-400
Description : Which of the following materials does not form adherent oxide film on surface? (A) Copper (B) Nickel (C) Aluminium (D) Gold & silver
Last Answer : (D) Gold & silver
Description : For hard facing base alloys used are a) high carbon steel b) high carbon iron c) carbon steel d) stainless steel
Last Answer : b) high carbon iron
Description : Molten phthalic anhydride is stored in a/an __________ vessel. (A) Aluminium (B) Nickel clad steel (C) Lead lined steel (D) Glass lined steel
Last Answer : (A) Aluminium
Description : For handling sulphuric acid of 95% strength, the suitable material of construction for pipes is (A) Stainless steel (B) Cast iron (C) Aluminium (D) Nickel
Last Answer : (B) Cast iron
Description : Stainless steel contains (A) Chromium and nickel (B) Copper (C) Aluminium (D) Vanadium
Last Answer : (A) Chromium and nickel
Description : Alinco, which is a aluminium-cobalt-nickel steel, is used for making (A) Surgical instruments (B) Powerful magnets (C) Chemical equipments (D) Boiler tubes
Last Answer : (B) Powerful magnets
Description : High resistance electrical heating elements/wire are not made of (A) Maraging steel (B) Nimonic alloys (C) Kanthal wire (D) Nichrome
Last Answer : (A) Maraging steel
Description : Which of the following alloys does not contain nickel? (A) Chlorinet - 2 alloy (B) Monel (C) Inconel (D) Babbitt metal
Last Answer : (D) Babbitt metal
Description : Which of the following alloys does not contain nickel? (A) Chloro, et-2 alloy (B) Monel (C) Inconel (D) Babbitt metal
Description : Nickel (56%) and molybdenum (17%) alloys are called (A) Monel (B) Hastelloy C (C) Inconel (D) Bronzes
Last Answer : (B) Hastelloy C
Description : Which of the following is not an alloy of nickel and chromium? (A) Inconel (B) Hastelloy (C) Nimonic alloys (D) Duralumin
Last Answer : (D) Duralumin
Description : Nickel as a material of construction (A) Is used as an alloying element for both ferrous & non-ferrous alloys (B) Is paramagnetic below 415° C (its Curie temperature) (C) Diamagnetic (D) Has a body centred cubic (bcc) crystal lattice structure
Last Answer : (A) Is used as an alloying element for both ferrous & non-ferrous alloys
Description : Nickel base alloys with __________ are known as monel metal. (A) Zinc (B) Tin (C) Copper (D) Molybdenum
Last Answer : (C) Copper