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The valency of sulphur in SO2 and SO3 is 4,6. Pls explain how?
why should we wear cotton clothes in summer?
ICE AT 0 DEGREE CELCIUS APPEARS COLDER TO THE MOUTH THAN WATER AT 0 DEGREE CELCIUS.WHY?
The melting points of three solids X, Y and Z are 298 K, 314 K and 398 K respectively. Arrange these in increasing order of their inter particle force of attraction.
Give at least 10 differences between solid, liquid and gas.
what is the relation between celsius and kelvin scale?
why does steam cause more severe burns than boiling water
'osmosis' is a special kind of diffusion comment
How will you justify that ice , water and steam are the three states of a substance and not different substances?
latent heat of vaporization of two liquids a and b are 100j/kg and 150j/kg respectively .which one can produce more cooling effect.
why do liquid have fixed volume but no fixed shape
A rubber band changes its shape on stretching, then why is it called a solid?
which organelle is called 'digestive bag'?why is it so called?
What are similarities between boiling and evaporation ?
iron powder and sulphur powder were mixed together and divided into two parts A and B.When part A was heated strongly over a burner,then a substance C was formed.Then part B was not heated at all....
Explain briefly interconversion of states of matter on the basis of kinetic theorey of gases.
list two properties that liquid have in common with solids..??
Why do gas exert pressure?
name two gases of air which dissove in water by diffusion. what is the importance of this process in nature?
why does a desert cooler cool better on a hot dry day?what is a desert cooler?
Boiling water can extinguish fire more quickly then ice or cold water. Why?
how can we seperate mixture of iodine and ammonium chloride
A substance has no no mass. can we regard it as matter or not??
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