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please provide me notes of science of class x of Cbse ,chaperwise.

please give me summary of english literature of class X?

why does dry HCL gas not change the colour of the dry litmus paper

Please get me notes of class 10 of CBSE board for examination.

plz give all chapter of science note in chapterwise

plz give all chapter of science note in chapterwise

what do you mean by ethanol

history of mandeeleev in hindi

Give me link of blue print of science 10 th standard

why is circulation of blood in man known as double circulation?

please give me some websites in which we can download 10th class notes free

please give me some sites which i can download 10th class cbse notes free

chapter wise marks distribution of science-bio,chemistry, physics for sa-1

http://www.cbse.nic.in/curric~1/sqp_term2/SCIENCE%20X.pdf

a web site may be help u

sgai sample paper

what do you mean by gravtion?

Originally Posted by Unregistered

why does dry HCL gas not change the colour of the dry litmus paper

Because hydrochloroic acid form only when we mix hidrogen that isH+ in HCl.

I have one question that some times in board examination question s are not in textbooks .answer me

Originally Posted by Unregistered

why does dry HCL gas not change the colour of the dry litmus paper

because acids react with water and form H+ ions dry hcl gas not change the colour of the dry litmus because in h+ ions are not formed so litmus paper not change the colour

Originally Posted by Unregistered

why is circulation of blood in man known as double circulation?

because in humans blood have to pass from lungs to hear and again heart to lungs vans carries impure blood from body to lungs and artory have to carry blood from lungs to heart and heart to other parts of body because of which blood circulation in humans is known as double circulation

Originally Posted by Unregistered

why does dry HCL gas not change the colour of the dry litmus paper

Color of litmus paper changes only in presence of ions like hydrogen. And HCl could only produce those in aqueous solutions.

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