Chemistry The gas used for filling weather balloons is Air Nitrogen Helium Hydrogen Air Nitrogen Helium Hydrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is usually not an air-pollutant? Carbon dioxide Sulphur dioxide Hydrocarbons Nitrous oxide Carbon dioxide Sulphur dioxide Hydrocarbons Nitrous oxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry A substance which readily forms colloidal solution in contact with water is called Hydrophobic colloid Associated colloid Hydrophilic colloid Extrinsic colloid Hydrophobic colloid Associated colloid Hydrophilic colloid Extrinsic colloid ANSWER DOWNLOAD EXAMIANS APP
Chemistry The mass number of a nucleus is a fraction always less than its atomic number always more than the atomic weight the sum of the number of protons and neutrons present in the nucleus a fraction always less than its atomic number always more than the atomic weight the sum of the number of protons and neutrons present in the nucleus ANSWER DOWNLOAD EXAMIANS APP
Chemistry When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is Carbon dioxide Hydrogen All of them Oxygen Carbon dioxide Hydrogen All of them Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Coal is formed from Compressed and hardened biomass Deposit of animal waste Crude oil Coke Compressed and hardened biomass Deposit of animal waste Crude oil Coke ANSWER DOWNLOAD EXAMIANS APP
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