Chemistry Which among the following is a covalent compound ? Calcium chloride Sodium chloride Magnesium fluoride Carbon tetrachloride Calcium chloride Sodium chloride Magnesium fluoride Carbon tetrachloride ANSWER DOWNLOAD EXAMIANS APP
Chemistry The number of d-electrons in Fe2+ (Z = 26) is not equal to that of p-electrons in Ne(Z = 10) p-electrons in CI(Z = 17) s-electrons in Mg(Z = 12) d-electrons in Fe(Z = 26) p-electrons in Ne(Z = 10) p-electrons in CI(Z = 17) s-electrons in Mg(Z = 12) d-electrons in Fe(Z = 26) ANSWER DOWNLOAD EXAMIANS APP
Chemistry Earth’s atmosphere is an envelope of gases extending to a height of 300 km 100 km 200 km 150 km 300 km 100 km 200 km 150 km ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following gases is mixed with oxygen for breathing by divers in aqua lungs? Hydrogen Nitrogen Helium Methane Hydrogen Nitrogen Helium Methane ANSWER DOWNLOAD EXAMIANS APP
Chemistry Heavy metal pollution of water is caused by: Domestic sewage Paints Acid Plants Wood burning Domestic sewage Paints Acid Plants Wood burning ANSWER DOWNLOAD EXAMIANS APP
Chemistry Stains of rust on clothes can be removed by : Oxalic acid Alcohol H2O2 Petrol Oxalic acid Alcohol H2O2 Petrol ANSWER DOWNLOAD EXAMIANS APP
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