Chemistry All isotopes of the same element have ________ The same atomic number and the atomic mass Different atomic numbers and different atomic mass The same atomic number but different atomic masses Different atomic numbers and the same atomic mass The same atomic number and the atomic mass Different atomic numbers and different atomic mass The same atomic number but different atomic masses Different atomic numbers and the same atomic mass ANSWER DOWNLOAD EXAMIANS APP
Chemistry In the periodic table of elements, on moving from left to right across a period, the atomic radius Remains unchanged Increases Does not follow a definite pattern Decreases Remains unchanged Increases Does not follow a definite pattern Decreases ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas which is mainly responsible for the green house effect is: Oxygen Carbon dioxide Carbon monoxide Ozone Oxygen Carbon dioxide Carbon monoxide Ozone ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used to remove rust stains on cloth? Lime Oxalic acid solution Kerosene Petrol Lime Oxalic acid solution Kerosene Petrol ANSWER DOWNLOAD EXAMIANS APP
Chemistry The addition of gypsum to portland cement helps in : Rapid setting of cement Preventing rapid setting of cement Increasing the strength of cement Reduction in the cost of cement Rapid setting of cement Preventing rapid setting of cement Increasing the strength of cement Reduction in the cost of cement ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which is not a green house gas ? N2O Chlorofluorocarbons CH4 CO2 N2O Chlorofluorocarbons CH4 CO2 ANSWER DOWNLOAD EXAMIANS APP
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