Chemistry Which mineral is the ore of aluminium ? Haematite Siderite Magnetite Bauxite Haematite Siderite Magnetite Bauxite ANSWER DOWNLOAD EXAMIANS APP
Chemistry A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed? From blue to pink From pink to blue-green From brown to orange-red From brown to blue-black From blue to pink From pink to blue-green From brown to orange-red From brown to blue-black ANSWER DOWNLOAD EXAMIANS APP
Chemistry The number of waves in n x 10th Bohr's orbit are n-2 n3 n n2 n-2 n3 n n2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Extensively used nitrogenous fertilizer is Ammonium sulphate Urea Ammonium nitrate Nitro-lime Ammonium sulphate Urea Ammonium nitrate Nitro-lime ANSWER DOWNLOAD EXAMIANS APP
Chemistry Iron is extracted from Cinnabar Haematite Dolomite Bauxite Cinnabar Haematite Dolomite Bauxite ANSWER DOWNLOAD EXAMIANS APP
Chemistry Stains of rust on clothes can be removed by : Alcohol Petrol H2O2 Oxalic acid Alcohol Petrol H2O2 Oxalic acid ANSWER DOWNLOAD EXAMIANS APP
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