121 A limiting reactant is one which________________? Chemistry Medium Full question → A is taken in lesser quantity in grams as compared to other reactants B is taken in lesser quantity in volume as compared to other reactants C gives the maximum amount of the product which is required D gives the minimum amount of the product under consideration
122 Which element has same isotopes like palladium___________________? Chemistry Medium Full question → A Nickel B Calcium C Cadmium D Tin
123 The number of atoms in a molecule determines________________? Chemistry Medium Full question → A macromolecule B macromolecule C molecularity D atomicity
124 The mass of one mole of electron is________________? Chemistry Medium Full question → A 1.008 B 0.55 C 0.184 D 1.637
125 Chlorination of water may be harmful if the water contains_________________? Chemistry Medium Full question → A Ammonia B Dissolved oxygen C Carbon dioxide D All
126 Which one of the following fertilizers provides the nitrogen and phosphorus to the plant ? Chemistry Medium Full question → A Urea B Calcium superphosphate C Diammonium phosphate D Potassium nitrate
127 Which of the following is not a fatty acid ? Chemistry Medium Full question → A Propanoic acid B Acetic acid C Phthalic acid D Butanoic acid
128 For industrial preparation of CH3CHO catalytic promoter is_________________? Chemistry Medium Full question → A PdCl2 B Cu2Cl2 C CuCl2 D PbCl2
129 Ethy1 chloride on reduction in the presence of Zn/HCI produces___________________? Chemistry Medium Full question → A n. butane B Ethanol C Ethane D Diethy1 ether
130 When CO2 is made to react with ethy1 magnesium iodide in dry ether followed by acid hydrolysis yields______________? Chemistry Medium Full question → A Carboxylic acid B Ethanoic acid C Propanoic acid D Butanoic acid
131 Which one of the following will be sulphonated readily ? Chemistry Medium Full question → A Chlorobenzene B Toluene C Nitrobenzene D Benzene
132 When benzene is heated in air with V2O5 at 450°C yields_________________? Chemistry Medium Full question → A Phenol B Maleic anhydride C Glyoxal D Benzoic acid
133 In 1 – pentene -4- yne the carbon exhibit hybridization_________________? Chemistry Medium Full question → A sp3 – sp2 B sp2 – sp C sp2 – sp D sp3 – sp2 – sp
134 Which one of the following looks odd__________________? Chemistry Medium Full question → A H2SO4 B KMnO4 C H2S D K2CrO4
135 The most paramagnetic element is____________________? Chemistry Medium Full question → A Iron B Cobalt C Chromium D Manganese
136 Which molecule has the highest bond energy among the halogens_________________? Chemistry Medium Full question → A Fluorine B Chlorine C Iodine D Bromine
137 The most reactive allotropic form of phosphorus is________________? Chemistry Medium Full question → A White B Redox potential C Black D Violet
138 Which is carnalite________________? Chemistry Medium Full question → A KCI B NaCI C KCI MgCl2 6H2O D Na2CO3. 10H2O
139 Which is the unit of (K) rate constant for zero order reaction ? Chemistry Medium Full question → A s-1 B mol dm-3 s-1 C mol-1 dm3 s-1 D mol-2 dm6 s-1
140 Which of the following can be used in laptops ? Chemistry Medium Full question → A Silver oxide battery B Fuel cell C Nickel cadmium cell D Lead accumulator