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प्रश्न
State the property of the following substance.
Lead chloride reacts with barium sulphate to give a white precipitate of lead sulphate.
पर्याय
Physical
Chemical
उत्तर
Chemical
संबंधित प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
When we add water to the following substances, which one will show a chemical change?
State one condition necessary to liquefy gases (other than applying high pressure).
Fill in the following blank with suitable words :
The state of matter called ........................ makes a fluorescent tube (or neon sign bulb) to glow.
Why does the temperature remain constant during the boiling of water even though heat is supplied continuously ?
How is ammonia gas liquefied ?
Draw a labelled diagram of the experimental set-up to demonstrate the sublimation of ammonium chloride.
Which of the following energy is absorbed during the change of state of a substance ?
Define the following terms: Sublimation
Write whether the following statement is true or false:
All solids, on heating, first change to the liquid and then to the gaseous state always
Fill in the blanks with the correct word/s from the bracket.
Ice on absorption of heat converts to ‘X’ a process called ____ [vaporization / melting]. ‘X’ changes to water vapour on ____ [heating / cooling]. Water vapour changes back to ‘X’ on ____ [freezing / condensation]. The constant temperature at which ice changes into ‘X’ is called its ____ [fusion point / melting point / boiling point].
