1141 Gypsum is______? Chemistry Medium Full question → A CaSO4 B CaSO4.1/2H2O C CaSO4,2H2O D CaSO4.3H2O
1142 In melting of iron, which of the following reactions takes place in Bladt Furnace at 400°C- 600°C________? Chemistry Medium Full question → A CaO+ SiO2——> CaSiO3 B 2FeS+3O2——–> 2Fe+ SO2 C FeSiO3———> FeSiO3 D Fe2O3+ 3CO——–> 2Fe+ 3CO2
1143 Parke’s process is used in the extraction of________? Chemistry Medium Full question → A Iron B Sodium C Silver D Zinc
1144 Which metal is used as a reducing agent in Smelting______? Chemistry Medium Full question → A C B Zn C Al D Cu
1145 A process used for the Concentration of Ore is________? Chemistry Medium Full question → A Roasting B Forth flotation C Electrolysis D Distillation
1146 Which Oxide of Manganese is amphoteric? Chemistry Medium Full question → A MnO2 B Mn2O3 C Mn2O7 D MnO
1147 The purpose of Smelting an ore is to________? Chemistry Medium Full question → A Reduce it B Oxidize it C Obtain an alloy D Separate volatile impurities
1148 Which set of quantum numbers is not allowed? Chemistry Medium Full question → A n=2,l=1,m1=0,ms=+1/2 B n=2,l=1,m1=-1,ms=+1/2 C n=2,l=0,m1=0,ms=-1/2 D n=2,l=2,m1=1,ms=-1/2
1149 Find the PH of a 0.001 M solution of Nitric acid HNO3? Chemistry Medium Full question → A 2 B 3 C 4 D 5
1150 Potassium Permanganate is used for purifying drinking water, because_________? Chemistry Medium Full question → A It is a sterilising agent. B It dissolves the impurities of water. C It is a reducing agent. D It is an oxidising agent.
1152 The chemical (Ethyl Mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of:_______? Chemistry Medium Full question → A Bromine B Fluorine C Chlorine D Sulphur
1153 The average salinity of sea water is________? Chemistry Medium Full question → A 3% B 3.5% C 2.5% D 2%
1154 Tetraethyl lead is used as______? Chemistry Medium Full question → A Pain Killer B Fire Extinguisher C Mosquito Repellent D Petrol Additive
1155 Electric bulb filament is made of__________? Chemistry Medium Full question → A Copper B Aluminum C Lead D Tungsten
1156 Oxidation state +1 for phosphorous is found in___________? Chemistry Medium Full question → A H3PO3 B H3PO4 C H3PO2 D H2P2O7
1157 SO2 reacts with Cl in sunlight to form__________? Chemistry Medium Full question → A Sulphur dioxide B Sulphuryl chloride C Suphanyl chloride D All of the above
1158 Argon gas was discovered by_______? Chemistry Medium Full question → A Rayleigh B Ramsay C Lockerey D Dalton
1160 The O-O linkage is present in__________? Chemistry Medium Full question → A H2S2O3 B H2SO8 C H2S4O6 D H2 S2 O6