Chemistry Which of the following is used to increase the anti-knocking property of petrol ? Tetramethyl lead Triethyl lead Tetraethyl lead Trimethyl lead Tetramethyl lead Triethyl lead Tetraethyl lead Trimethyl lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry The percentage of carbon in cost iron is : 0.01 to 0.25 3 to 5 0.5 to 1.5 6 to 8 0.01 to 0.25 3 to 5 0.5 to 1.5 6 to 8 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following coal contains 90 per cent of carbon? Bitumen Lignite Peat Anthracite Bitumen Lignite Peat Anthracite ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following metals is used in Space Crafts to withstand high temperatures ? Fe Ni Ti Pb Fe Ni Ti Pb ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas which emits from rice field is Methane Nitrogen Ethane All of these Methane Nitrogen Ethane All of these ANSWER DOWNLOAD EXAMIANS APP
Chemistry The mass number of a nucleus is always more than the atomic weight a fraction always less than its atomic number the sum of the number of protons and neutrons present in the nucleus always more than the atomic weight a fraction always less than its atomic number the sum of the number of protons and neutrons present in the nucleus ANSWER DOWNLOAD EXAMIANS APP
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