Chemistry The iron ore which contains 72% of iron is : Haematite Siderite Magnetite Limonite Haematite Siderite Magnetite Limonite ANSWER DOWNLOAD EXAMIANS APP
Chemistry High concentration hydrocarbon pollutants in atmospheric air causes Cancer Respiratory diseases (e.g.asthma) Silicosis Reduced crop yield Cancer Respiratory diseases (e.g.asthma) Silicosis Reduced crop yield ANSWER DOWNLOAD EXAMIANS APP
Chemistry Mixture can be Heterogeneous Both A and B Pure substance Homogeneous Heterogeneous Both A and B Pure substance Homogeneous ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ruby and sapphire are oxides of Tin Copper Iron Aluminium Tin Copper Iron Aluminium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which metal is extracted from sea water? Aluminium Magnesium Beryllium Potassium Aluminium Magnesium Beryllium Potassium ANSWER DOWNLOAD EXAMIANS APP
Chemistry If the equilibrium constants for the systems H2 + I2 ? 2HI and 2HI ? H2 + I2 are K1 and K2 respectively, the relationship between K1 and K2 is : K1 = 2K2 K1 = K2 K 1 = 1 /K2 K1 = K2/2 K1 = 2K2 K1 = K2 K 1 = 1 /K2 K1 = K2/2 ANSWER DOWNLOAD EXAMIANS APP
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