Quiz Hard 3 Categories Quizzes 0 Quiz Hard 3 1 / 30 The number of degrees of freedom and number of components for a system of sodium chloride solution in water containing undissolved salt, in equilibrium with water vapour, are 2,2 3,2 1,1 1, 2 2 / 30 PMR spectra of Ch3CHO may be described as Quartet for 3 protons an3 duplet for 1 proton Duplet for 3 protons qaurter for I proton Singlet for 3 protons anti duplet for proton Duplet for 3 protons and single for proton 3 / 30 The elements with atomic number greater than 100 are known as Lanthanides Trans-fermium elements Trans-uranium elements Actinides 4 / 30 In the osmotic method for the determination of molecular weight of polymers, molecular weight can be calculated from the intercept of the π versus c graph π /c versus c graph π /c versus I/M graph π /c versus RT/M graph 5 / 30 The Tyndall effect was used by Zeigniondy to devise Electrodialysis The ultramicroscope the osmometer the ultracentrifuge 6 / 30 A compound with an incongruent melting point decomposes on heating into A liquid of the same composition as the solid A new solid phase and a solution with a composition different from that of the solid phase A solution of fixed composition A new solid phase and a solution with the same composition as that of the solid phase 7 / 30 Phosphorus is detected by fusing the organic compound with - followed by extraction with H2O Ozone HNO3 H2SO4 None of the above Sodium peroxide 8 / 30 The stabilization of the dispersed phase lyophobic sol is due to The surface tension of the medium Liking for the dispersion medium The formation of an electrical layer between the two phases The viscosity of the medium 9 / 30 Citral when heated with KHSO4 forms? P-menthane p-cymene Dipentene Isoprene 10 / 30 Which of the following expression is used to calculate the molar mass of the solute? M2 = πV/W2 RT M2 = V/W2 T M = W2 RT/V M = W2 RT/πV 11 / 30 Soft drinks and baby feeding bottles are generally made up Polystyrene Polyester r- lyamide Polyurethane 12 / 30 setrols are steroids having the functional group alcoholic aldehydie phenolic ketonic 13 / 30 Dyes used in photographic plates to make them panchromatic in Cyanine dyes Phthalocyanine dyes Acridine dyes Azine dyes 14 / 30 Dyes which can be applied to cellulosic fibre from water solution are called Ingrain dyes Substantive dyes Mordant dyes vat dyes 15 / 30 In a system, when the chemical potential of each component is the same for all phases, the equilibrium is said to be in Mechanical equilibrium Metastable equilibrium Composition equilibrium Thermal equilibrium 16 / 30 Recryetallization in the moot common technique of purification of solid organic substances. Which of the following statements is not related with characteristics of a suitable solvent It does not react chemically with substance ) It readily allows it to separate out in 1 he form of crystal on cooling It does dissolve the impurities It does not dissolve the impurities at all It dissolves the substance on heating 17 / 30 The number of elements in each of the long periods of periodic table is 8 32 36 18 18 / 30 Peppermint oil contains Thymol alpha-pinene Camphene Menthol 19 / 30 A colorless liquid undergoes a rapid and exothermic reaction with water giving a strongly acidic solution.The formula of liquid will be CH3CHClCHO CH3CH2CONH2 CH3CH2COCl CH3CH2CO2H 20 / 30 The energy aesociated with photon of light is c= nl E=hn E=hc E=mc2 21 / 30 Direct irradiation of butadiene along results in the reaction Photoisomerization Photoreduction Photodimerization Photodegradation 22 / 30 Chemical reactions of the type A →k1 b →k2 C are called Parallel reactions Consecutive reactions Pseudo chemical reactions Fast reactions 23 / 30 The value of molar extinction coefficient Probability of transition Wavelength of absorption all these Frequency of absorption 24 / 30 The selection rule for transitions in rotational energy levele of a diatomic molecule is Ñj =- 1 Ñj= ± 2 Ñj =+ 1 Ñj = ± 1 25 / 30 The addition of HCI to 2-pentene gives 3-chloropentane 2-chloropentyne 2-chloro-2-methyl butane 2-chloropentane 26 / 30 In the friedel-craft acylation, the amount of AlCl3 must be taken as In catalytic amount One equivalent more than one equivalent smount does not matter 27 / 30 The number of degrees of freedom at the triple point for the water system is zero two three one 28 / 30 Colloids can be purified by Peptization Coagulation Dialysis The Breeding arc method 29 / 30 Which of the following ions does not have the electronic configuration same as that of neon? Ca2+ Na+ F- O2- 30 / 30 Which of the following radiation has vibrational transitions? Infrared Radiowaves gammarays X-rays Microwave Your score is Share: Quiz Dad Previous post Quiz Hard 2 October 1, 2022 Next post Quiz Hard 4 October 1, 2022 You may also like Quiz Hard 5 1 October, 2022 Quiz Hard 4 1 October, 2022 Quiz Hard 2 1 October, 2022
