Chemistry A balloon filled with helium rises in air because Helium pushes down on the air below the balloon Helium is less dense than air The balloon is weightless Air exerts an upward force on the balloon Helium pushes down on the air below the balloon Helium is less dense than air The balloon is weightless Air exerts an upward force on the balloon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Of the following, which one pollutes the air of a big city ? Copper Lead Cadmium Chromium Copper Lead Cadmium Chromium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas used in the artificial ripening of fruits is Butane Methane Acetylene Ethane Butane Methane Acetylene Ethane ANSWER DOWNLOAD EXAMIANS APP
Chemistry Zinc sulphide is commonly used as Rodenticide Fungicide Herbicide Deodorant Rodenticide Fungicide Herbicide Deodorant ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is a natural dye ? Phenolphthalein Crystal violet Alizarin Aniline blue Phenolphthalein Crystal violet Alizarin Aniline blue ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following contains maximum percentage of carbon ? Stainless steel High speed steel Cast iron Wrought iron Stainless steel High speed steel Cast iron Wrought iron ANSWER DOWNLOAD EXAMIANS APP
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