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				   is all topics from surface chemistry there for 2012 cbse board exam fro ncert textbooks.

also for physics & maths wat all r excluded

4 years ago

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Answers : (1)

										

Hi Surya,


All the chapter from NCERT books are importantb from engineering point of view


Please try to cover them all and it will help you accordingly


Regards

4 years ago

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Why glass of windows in buildings is thicker at bottom and why it is milky?
 
 
Glass is super cooled liquied of high viscosity . Thus it possesses fludity. Due to this glass flows down slowly so bottom is thicker when compared to top.
 
PRAPULPODISHETTI 9 months ago
 
Glass is a super cooled liquid of high viscosity. Thus itpossesses fluidity. Due to this glass flows down slowly andhence it is thicker at bottom.
 
L GOUSE BASHA 9 months ago
 
Glass is a super cooled liquid of high viscosity. Thus itpossesses fluidity. Due to this glass flows down slowly andhence it is thicker at bottom.
 
KUNCHAM SAMPATH 9 months ago
The bond angle of SO 2 is nearly........................................................?
 
 
SORRY FRIEND DUE TO NET PROBLEM SHORT ANSWER IS APPEARED.
 
NARAYANA 4 months ago
 
in sulfur dioxide, there are three electron clouds around the sulfur. Only two of these connect two atoms. In the molecule, the oxygen-sulfur-oxygen atoms make a 120° angle. The molecule is ...
 
N JYOTHEESWAR 4 months ago
 
pairs stronger → bond angle is less than 120°. Example: SO2 . Bent shape. Bond angle of ~119°. • Tetrahedral electron-group arrangement with one lone pair.
 
manichandra 4 months ago
what is the oxidation state of NO
 
 
+2
 
srujanyadav 9 months ago
 
+2
 
sanjay 9 months ago
 
+2 is the oxidation state of NO
 
RAKESH CHINDAM 9 months ago
what is allotropy?
 
 
Two or more substances having same chemical properties but different in physical properties. This tendency known as allotropy.
 
SAIMANIKANTA 8 months ago
 
The phenomenon of existence of an element indifferent physical forms but possesing similar chemical properties is known as allotropy
 
pa1 8 months ago
 
The phenomenon of existence of an element indifferent physical forms but possesing similar chemical properties is known as allotropy
 
pa1 8 months ago
20 g of impure NaCl solution is added to aqueous solution having excess AgNO3. AgCl precipitation is obtained with mass 28.7g. find % purity of NaCl.
 
 
sory corect answer is 58.5 you can approach it by writting the balance chemical eqn {1 mol agcl will be produced by one mol of nacl} so 28.7g of agcl ie;0.2 mol will be produced by 0.2 mol...
 
abhishek kumar 10 months ago
 
as 0.2 moles of agcl is produced it means Chlorine obtained from nacl was also 0.2 moles. this implies 0.2 moles of nacl were present in the impure solution. molesXatomic weight(nacl)= MASS ...
 
akash 10 months ago
 
ya thanks, but the answer i have is 58.8%. so if anyone can provide a reason for this answer, i'll be really thankful. still thank you Mr. Akash
 
vindhya 10 months ago
define Avogadro 's law
 
 
Avogadro's law states that, "equal volumes of all gases, at the same temperature and pressure, have the same number of molecules". For a given mass of an ideal gas , the volume and amount...
 
KUNCHAM SAMPATH 9 months ago
 
- Avogadro's law states that, "equal volumes of all gases, at the same temperature and pressure, have the same number of molecules". For a given mass of an ideal gas , the volume and amount ...
 
KARTHIK 8 months ago
 
Avogadro's law states that, "equal volumes of all gases, at the same temperature and pressure, have the same number of molecules". For a given mass of an ideal gas, the volume and amount...
 
PAVAN 8 months ago
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