Quiz Hard 2 Categories Quizzes 0 Quiz Hard 2 1 / 30 Which of the following is the basic indicator for titration of NH4OH with HCI? Phenolphthalein Eriochrome book Methyl Orange Eosin Methyl red 2 / 30 Which is true for DDT? It is a non degradable pollutant not a pollutant an antibiotic a pesticide an antiseptic agent 3 / 30 which of the following cast iron is a high carbon , iron- carbon-silicon alloy? Deoxidizers Deorizers Deterrent Deoxifiers 4 / 30 Which one of the following statements is not Transition metals form complexes Zn, Cd and Hg are transition metals K2[PtCl6] is a well known compound, but corresponding nikel compound is not known. Transition metals form alloys 5 / 30 Trypsim , is an enzyme which Oxidises protiens Hydrolyses fats Hydrolyses protiens Oxidises carbohydrates 6 / 30 Which among the following elements has the highest value of IE? Sr Mg Ca Na 7 / 30 Arrange the basic tendencies of the following metallic oxide in the decreasing order K2O>MgO>CaO>BaO K2O>BaO>CaO>MgO K2O>CaO>BaO>MgO K2O>MgO>BaO>CaO 8 / 30 Which of the following is not a polysaccharide? Cellulose Insulin Amylase Cellobiose 9 / 30 Argillaceous material does not include marine shells blast furnace slag slate Vlay 10 / 30 Which of the followings is not a component of HPLC system? columns pumps particle collector detector and readoni injection system 11 / 30 The number of bonds formed by the central atom is called its Coordination number Complex number Avogadro's number Valence number 12 / 30 If the activation enemy in the forwrard direction of an elementary step is 52 kJ and the activation energy in the reverse direction is 74 kJ. what is the energy- of reaction AE for this step? 22 kJ 52 KJ .-52 kJ .-22 KJ 126 kJ 13 / 30 Of the following, an amphoteric hydroxide LiOh NaOH Ca(OH)2 Be(OH)2 14 / 30 Which of the following statement is not related with environmental pollution? Undesirable change in the chemical characteristics of the water Not affecting adversely the industrial program. Undesirable change in the biological characteristics of the soil Direct or indirect change in any component of the biosphere Undesirable change in the physical characteristics of the air 15 / 30 Nucleoside adenosine on hydrolysis gives Pyrimidine base + Ribose Purine base +Ribose Pyrimidine base + Deoxyribose Purine base + Deoxyribose 16 / 30 Which of the following elements has the highest value of second ionization energy? lithium beryllium magnesium boron 17 / 30 Which treatment is done with pulp before delivering it to paper making machine? All above pulp is dispersed in water to make slurry Mechanical refining or beating of the fibers None addition of chemical additives and recycled fibres from the waste paper plant 18 / 30 Xe reacts directly with F2 Br2 O2 Cl2 19 / 30 Glucose and fructose react with which of the folowing reagent to give same product Hydroxyl amine Phenyl hydrazine All of these Tollen's reagent 20 / 30 Xeon diflouride is obtained by irradiating a mixture of xenon and flourins with light from high pressure Mercurry arc Xenon arc none Tungeston arc 21 / 30 A freshly prepared solution of glucose has a specific rotation of +110 but on keeping for some time it changes to +57.2 ÌŠÌŠ the phenomenon is known as Alternation Mutarotation None of these Epimerization 22 / 30 Which of the following disaccharide is non reducing sugar Sucrose Lactose Maltase Maltose 23 / 30 What is the lowest-temperature diffusion-hardening process and does not require a quench? nitriding tempering melting heat-treating carburizing 24 / 30 Which of the following detector is sued for compounds containing electronegative atoms? Uv-detector ECD Mass spectrometer TCD 25 / 30 Which of the following reactions cannot be used for the synthesis of amino acids Schmidt synthesis Streckers synthesis Gabriel phthalimide Sorensen synthesis 26 / 30 Which statement is false? Activation energy is a kinetic quantity rather than a thermodynamic quantity. If a reaction is thermodynamically nonspontaneous, it will not occur spontaneously If a reaction is thermodynamically spontaneous it may occur slowly If a reaction is thermodynamically spontaneous, it must haven no activation energy. If a reaction is thermodynamically spontaneous it may occur rapidly. 27 / 30 A catalyst Changes the equilibrium concentration of the products. Always increases the activation eneru for a reaction. Always decreases the rate for a reaction Actually participates in the reaction. Does not affect a reaction energy path 28 / 30 Neon is used in neon sign for advertising purpose because Neon light are available from fog and mist neon lights are available from long distance none Both a and b 29 / 30 At high temperature nitrogen combine with calcium carbide to give Calcium carbonate Calcium cyanamide Calcium nitride Calcium cyanide 30 / 30 Which of the following is not true for ozone Its molecular is linear and has two, different 0-0 bond Iengths It attacks organic compound containing carbon-carbon double bond It is more powerful oxidising agent molecular oxygen It is a strong sterilizing agent Your score is Share: Quiz Dad Previous post Quiz Hard 1 October 1, 2022 Next post Quiz Hard 3 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