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Subject: Chemistry, asked on 21/9/17

Name any metallic oxide which is not reduced by hydrogen.

Subject: Chemistry, asked on 25/6/17

What is latent heat of fusion ? Not getting by video.

Subject: Chemistry, asked on 29/3/17

can hybridisation occur in a double covalent bonded atom ?
Give eg. and show how (please).
Also mention C2H4 hybridisation.(Here i want to know that why does C2H4 hybridise coz each p orbital inC atom has 2 orbitals half filled(means with one electron in each) so 4 electrons can easily be accomodated : 2 in one atom and another 2 in the other..)

Subject: Chemistry, asked on 8/9/17

name any metallic oxide which is not reduced by hydrogen

Subject: Chemistry, asked on 5/6/17

What is the definition of kinetic theory of matter?

Subject: Chemistry, asked on 30/1/17

Which one does not involve the breakdown of a compound in to simpler substances ?
(A) Food is digested in the stomach.
(B) When black powder Q is heated with yellow powder R , a black solid forms.
(C) White crystal S changes in to a black solid upon gentle heating.
(D) Two different gases are obtained when electricity passes through liquid T.

Subject: Chemistry, asked on 28/1/17

Please answer this question with explanation

61. Which group is made up of matter only ?
(A) Cloud, snow and wind
(B) Air, thunder and water
(C) Chair, sand and shadow
(D) Cotton, feather and music

62. The atoms P1531and S1632 have the same
(A) Nucleon number                                                       (B) Number of electrons
(C) Number of Neutrons                                                 (D) Number of Protons

Subject: Chemistry, asked on 27/1/17

What is ionisation potential and electron affinity ? Plz explain.

Subject: Chemistry, asked on 22/6/16

A small quantity of chlorine fills the whole vessels in which it is enclosed

Subject: Chemistry, asked on 21/6/16

on the basis of kinetic theory of matter explain why solids blocks of air freshner disappear without leaving any solid.

Subject: Chemistry, asked on 18/6/16

How can we say that molecules of a substance have potential energy?

Subject: Chemistry, asked on 13/6/16

What is brownian motion?

Ap
Subject: Chemistry, asked on 26/5/16

Give the difference between solids, liquids and gases on the basis of inter-molecular collision. (Kindly answer the above question, and also explain what is inter molecular collision in 1 or 2 sentences.)

Subject: Chemistry, asked on 20/5/16

Draw a flowchart of interconversion of states of matter?

Subject: Chemistry, asked on 26/4/16

Explain why?
(a)water kept in earthen pot becomes cooler during summers?
(b)it takes longer to dry wet clothes in humid weather ?
 

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