Which among the following are physical or chemical changes?
(a) Evaporation of petrol
(b) Burning of Liquefied Petroleum Gas (LPG)
`(c)`Heating of an iron rod to red hot
(d) Curdling of milk
`(e)`Sublimation of solid ammonium chloride

Which among the following are physical or chemical changes? Evaporation of petrol

Which among the following are physical or chemical changes? Heating of an iron rod to red hot.

Which among the following are physical or chemical changes? Sublimation of solid ammonium chloride

Which among the following are physical or chemical changes? Burning of Liquefied Petroleum Gas (LPG)

Classify the following as physical and chemical changes. (i) Conversion of milk into curd (ii) Burning of magnesium ribbon in air (iii) Rusting of iron nails (iv) Dissolving salt in water (v) Burning of cool (vi) Electrolysis of sodium chloride solution by passing current (vii) Crystallisation of copper sulphate.

which of the following as physical changes and which are chemical changes changes ? (a) Burning of a maggesium wire (b) Freezing of water ( c) Rusting of iron (D) Glowing of an electric bulb

Which of the following are chemical changes ? (a) Growth of a plant (b) Rusting of iron (c ) Mixing of iron filings and sand (d) Cooking of food (e ) Digestion of food (f) Freezing of water (g) Burning of a candle