1001 For which mechanisms the first step involved is the same ? Chemistry Medium Full question → A E1 + E2 B E2 + SN2 C E1 and SN1 D SN1 and SN2
1002 SN2 reaction can be best carried out with__________________? Chemistry Medium Full question → A primary alkyl halide B secondary alkyl halide C tertiary alkyl halide D all
1003 When CO2 is made to react with ethyl magnesium iodide followed by acid hydrolysis the product formed is _________________? Chemistry Medium Full question → A propane B propanoic acid C propanal D propanol
1004 When two moles of ethyl chloride react with two moles of sodium in the presence of ether what will be formed ? Chemistry Medium Full question → A 2 moles of ethane B 1 mole of ethane C 2 moles of butane D 1 mole of butane
1005 Which alkyl halide out of the following may follow both SN1 and SN2 mechanism ? Chemistry Medium Full question → A CH3-X B (CH3)3 C-CH2 – X C (CH3)2 CH – X D (CH3)3 C – X
1007 Which alkyl halide has the highest reactivity for a particular alkyl group ? Chemistry Medium Full question → A R-F B R-C C R-Br D R-I
1008 50% inversion of configuration of molecules take place in a___________________? Chemistry Medium Full question → A E1 – reaction B E2 – reaction C SN1 – reaction D SN2 – reaction
1009 The best method of preparation of alkyl halides is a reaction of alcohol with__________________? Chemistry Medium Full question → A Zn / HCI B SOCl2 / Pyridine C PCI3 D PCI5
1010 In primary alkyl halides the halogen atom is attached to a carbon which is further attached to how many carbon atoms__________________? Chemistry Medium Full question → A two B three C one D four
1011 Which one of the following molecules does not form alcohol when reacts with Grignard reagent ? Chemistry Medium Full question → A formaldehyde B acetaldehyde C propanone D carbondioxide
1012 Which one of the following alcohols will be formed when ethyl magnesium bromide reacts with acetone ? Chemistry Medium Full question → A primary alcohol B secondary alcohol C tertiary alcohol D dihydric alcohol
1013 Which one of the following species is not an electrophile ? Chemistry Medium Full question → A NH3 B Br+ C H+ D BF3
1014 The ether used in Wurtz synthesis is__________________? Chemistry Medium Full question → A acidic B basic C aqueous D dry
1015 Grignard reagent is reactive due to___________________? Chemistry Medium Full question → A the presence of halogen atom B the presence of magnesium atom C the polarity of C-Mg bond D all
1016 Elimination bimolecular reactions involve____________________________? Chemistry Medium Full question → A first order kinetics B second order kinetics C third order kinetics D zero order kinetics
1017 The rate of E1 reaction depends upon______________________? Chemistry Medium Full question → A the concentration of substrate B the concentration of nucleophile C the concentration of substrate as well as nucleophile D base the concentration of substrate as well as nucleophile
1018 What is the order of kinetics in the SN1 mechanism ? Chemistry Medium Full question → A Zero B First C Second D Third
1019 What will be the order of reaction of a reaction whose rate can be expressed as R = K [A] [B] ? Chemistry Medium Full question → A Zero B One C Two D Three
1020 The number of molecules taking part in the rate determining step is called___________________? Chemistry Medium Full question → A Order of reaction B Rate of reaction C Mole of a reaction D Extent of a reaction