Quiz Hard 1 Categories Quizzes 2 Quiz Hard 1 1 / 30 What refers to the deterioration of material by oscillatory relative motion of small amplitude (20 to 100 am) between two solid surfaces in a corrosive enviroment? none Filiform corrosion Fretting corrosion Stray current corrosion Microbiological corrosion 2 / 30 Which of the following device is used to measure potential difference between electrodes? conductometer voltmeter Polarimetre photometer 3 / 30 . The engineering materials known as "plastics" are more correctly called polythylene copolymers Polyvinyl chloride polymers mers 4 / 30 The first layer of cell wall which is formed is: Primary wall Secondary wall all these Middle lamella 5 / 30 Molecules done being processed in the ER are often transported to which structure? Peroxisomes Vacuoles Golgi apparatus Mitochondria 6 / 30 Thermogravimetric analysis has application in which of the following fields? Determination of purity and thermal stability all these Discovery of new methods of separation Gravimetric analysis Properties of materials 7 / 30 In the system of designating wrought aluminum alloys,the letter F that follows the number indicates what condition of the alloy? Artificially aged Annealed As fabricated Calcined Strain hardened 8 / 30 It is often said that the rate of a typical reaction is roughly 10oC. What explains this observation? Raining the temperature by 10oC doubles the soother of molecules having more than a certain minimum energy Raising the temperature by 100C doubles the number of molecular collisions in a given time Raising the temperature by 10oC doubles the average velocity of each molecule Raising the temperature by 10oC doubles the average energy of each molecule 9 / 30 what refers to the tedency for polymers and molecular materials to form with an orderd, spatial three -dimensional arrangement of monom er molecules? none Retentivity Conductivity Stereo specificity spatial configuration 10 / 30 The wear-resistance of this material is attributed to its ability to --, that is, the hardness is increased greatly when the steel is cold worked stress harden coo-temperature cold harden strain harden 11 / 30 During which sub-phase of mitotic anaphase do centrosomes separate? Anaphase A Anaphase B Anaphase D Anaphase C 12 / 30 The emissions from a power station contain about 14 tonnes of SO2 per hour from the oxidation of F2S2 contained in the coal Cool the gases and the SO2 will liquefy and can be removed Dissolve the ionic FeS2 in hexane Pass the gases through concentrated sulphuric acid to dissolve the SO2 Pass the emissions through a bed of calcium oxide ✓ 13 / 30 Which of the following statement is not correct with respect to harmful effects of ground water pollution? It causes lungs cancer It helps to prevent epidemics It causes typhoid, dysentery and diarrhea It damages crops It causes jaundice 14 / 30 What is the equilibrium temperature of transformation of austenite to pearlite? 1666 F 1222F 1569 F 1333F 1000 F 15 / 30 Which of the followings statement is correct? Plant cells have a large central Shape of Plant cells is Rectangular (fixed shape) All of these Plant cells have a rigid cell wall and chioroplasts 16 / 30 . For a given mass of a gas at constant temperature, if the value V becomes 3 times, the pressure will become 6P 3P 3P/T 9P P/3 17 / 30 The study of insects is called what? Anatomy Taxonomy Hematology Entomology 18 / 30 The correct expression for root mean square speed is ( 2RT/M )1/2 ( 3RT / π M )1/2 ( 8RT/ π M ) 1/2 ( 8RT/M )1/2 ( 3RT/M )1/2 19 / 30 Which molecule it planar? C2CI4 NF3 C3H8 C3H6 20 / 30 Which of the following process is used for the removal of gases? Reaction at land and at ocean surface Chemical reaction in the atmosphere Absorption Precipitation All above 21 / 30 The human haploid number is which of the following? 10 23 30 46 22 / 30 'Zone of exclusion' is associated with Mitochondna plasma membrance Golgi bodies Nucleus 23 / 30 A cell with a haploid number of 20 has which of the following dipliod numbers? 10 40 2 80 24 / 30 Angiology deals with the study of blood vascular system. What is dermatology? Study of flowers study of skull study of frogs Study of skin 25 / 30 What are the products of the thermal decomposition of magnesium nitrate'? Magnesium oxide and nitrogen Magnesium niride and oxygen Magnesium oxide, nitrogen dioxide and oxygen Magnesium oxide, nitrogen and oxygen 26 / 30 Movement of the material across the called membrane which doesn't requiring expenditure of metabolic energy is called Co-transport counter transport Active transport Passive transport 27 / 30 Which of the following is not physical characteristics of water? temperature colour odour smell chlorine contents 28 / 30 The expected specific wastes of textile industry is pigment all these dyes cloth residue fiber residue 29 / 30 The green pigment in chloroplasts is an organic compound called. Phycobilin Carotene Chlorophyll Xanthophyll 30 / 30 What is the ratio of stress to strain in a material loaded within its elastic ranger? none Poisson's ratio Refractive index Modulus of elasticity Percent elongation Your score is Share: Quiz Dad Previous post Quiz Medium 5 October 1, 2022 Next post Quiz Hard 2 October 1, 2022 You may also like Quiz Hard 5 1 October, 2022 Quiz Hard 4 1 October, 2022 Quiz Hard 3 1 October, 2022
