Chemistry Combustion of a candle is a/an Physical change Exothermic reaction Photochemical reaction Endothermic reaction Physical change Exothermic reaction Photochemical reaction Endothermic reaction ANSWER DOWNLOAD EXAMIANS APP
Chemistry The material which can be deformed permanently by heat and pressure is called a chemical compound thermoset thermoplastic polymer chemical compound thermoset thermoplastic polymer ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used in welding broken pieces of iron rails and machine parts? Aluminium powder Solder Aluminium sulphate None of these Aluminium powder Solder Aluminium sulphate None of these ANSWER DOWNLOAD EXAMIANS APP
Chemistry The compound to which H2 does not add is Biphenyl ethylene Tetraphenyl ethylene Tetra –9 – phenanthrylethylene Tetra – a –naphthylethylene Biphenyl ethylene Tetraphenyl ethylene Tetra –9 – phenanthrylethylene Tetra – a –naphthylethylene ANSWER DOWNLOAD EXAMIANS APP
Chemistry Extensively used nitrogenous fertilizer is Ammonium sulphate Urea Nitro-lime Ammonium nitrate Ammonium sulphate Urea Nitro-lime Ammonium nitrate ANSWER DOWNLOAD EXAMIANS APP
Chemistry What are the components responsible for acid rain? Carbon dioxide (CO2) and Carbon monoxide (CO) Sulphur dioxide (SO2) and Nitrogen oxides (NOx) Oxides of carbon (COx) and Oxides of nitrogen (NOx) Nitrogen monoxide (NO) and Carbon monoxide (CO) Carbon dioxide (CO2) and Carbon monoxide (CO) Sulphur dioxide (SO2) and Nitrogen oxides (NOx) Oxides of carbon (COx) and Oxides of nitrogen (NOx) Nitrogen monoxide (NO) and Carbon monoxide (CO) ANSWER DOWNLOAD EXAMIANS APP
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