Chemistry The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is methane oxygen ozone helium methane oxygen ozone helium ANSWER DOWNLOAD EXAMIANS APP
Chemistry When cathode rays strike a target of high atomic weight, they give rise to X-rays ?-rays ? and ? rays Positive rays X-rays ?-rays ? and ? rays Positive rays ANSWER DOWNLOAD EXAMIANS APP
Chemistry 'All the four quantum numbers of two electrons in an atom are not the same.' It is the law of – Hund's rule of maximum multiplicity Avogadro's Law Exclusion Principle of Pauli Uncertainty Principle of Hiesenberg Hund's rule of maximum multiplicity Avogadro's Law Exclusion Principle of Pauli Uncertainty Principle of Hiesenberg ANSWER DOWNLOAD EXAMIANS APP
Chemistry Permanent – hardness of water may be removed by addition of Potassium Permangante Alum Sodium carbonate Lime Potassium Permangante Alum Sodium carbonate Lime ANSWER DOWNLOAD EXAMIANS APP
Chemistry Aqueous solution of which of the following is a good conductor of electricity Acetic acid Ammonia Ammonium acetate Glucose Acetic acid Ammonia Ammonium acetate Glucose ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant element in the earth’s atmosphere is Oxygen Krypton Nitrogen Argon Oxygen Krypton Nitrogen Argon ANSWER DOWNLOAD EXAMIANS APP
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