Chemistry The mass number of a nucleus is always more than the atomic weight always less than its atomic number the sum of the number of protons and neutrons present in the nucleus a fraction always more than the atomic weight always less than its atomic number the sum of the number of protons and neutrons present in the nucleus a fraction ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most important ore of lead is Siderite Pyrolusite Galena Magnetite Siderite Pyrolusite Galena Magnetite ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the mass percentage of carbon in carbon dioxide (CO2) 0.273 0.201 0.158 0.323 0.273 0.201 0.158 0.323 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Extensively used nitrogenous fertilizer is Urea Ammonium sulphate Nitro-lime Ammonium nitrate Urea Ammonium sulphate Nitro-lime Ammonium nitrate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Type metal used in printing press is an alloy of Lead and zinc Lead and antimony Lead and copper Lead and bismuth Lead and zinc Lead and antimony Lead and copper Lead and bismuth ANSWER DOWNLOAD EXAMIANS APP
Chemistry Williamson's synthesis is widely used in the laboratory preparation of Alcohols Ethers Aldehydes Esters Alcohols Ethers Aldehydes Esters ANSWER DOWNLOAD EXAMIANS APP
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