ICSE − Q & A

In cathode ray tube, why is the tube : 
(A) evacuated
(B) maintained at a very low pressure of 0.001 mm of Hg ??
Are both answers the same?

+ 5 more questions by varnzkatz  

In physics, if they ask us to write the energy conversion in a cathode ray tube, do we write heat energy to electrical energy or heat to visual pattern...or like how should we put it across? What's the right answer?
asked by Varna Sajee (varnzkatz) 7 years ago
1

In thermionic emission, do we have to learn Edison's experiment? (The one which he set up for discovery of thermionic emission)
asked by Varna Sajee (varnzkatz) 7 years ago
2

Give the I.U.P.A.C names of the two isomers of butane.
asked by Varna Sajee (varnzkatz) 7 years ago
1

Name a solid which on reaction with water forms- (a) Methane (b) Ethyne
asked by Varna Sajee (varnzkatz) 7 years ago
2

Could someone pls post the structure of the following organic compounds?- 1. 2,2 dimethyl propane 2. 2, methyl butane 3. 2,2 dimethyl pentane 4. 3,3 dimethyl but-1-yne 5. 2,3 dichloropentane
asked by Varna Sajee (varnzkatz) 7 years ago
1

Who is the constitutional head of union government?

Why does Jessica refer to Medea?

Does hepatic vein carry maximum urea few hours after a protein rich diet and renal artery carry max urea several hours after a protein rich diet??

Justify the needs for a single unified judicial system.
(4 marks)

Why was gopal krishna gokhale known as the political guru of Gandhi?

hey frndzz one of our frnd @vratika has uploaded the geo exercise of the chapter climate ....plzz have a view here:
http://www.respaper.com/vratika_moolrajani/6435-pdf.html
though she has informed me as a comment, i'm posting it for the sake of those frndzz those who were in search of it..plzz do zoom in it //there is a small problem while uploading it(as far i think....dont know the actual reason)once again thhnnnnxxxxx aaaa loootttttt @vratika:p

+ 1 more questions by junie  

can u plzz give an xample of second kind of lever that helps in the gain in sped??came across frnk unsolved papers....plzz help frndzz
asked by 1013 (junie) 7 years ago
1

Which systematic steps do we need to write to get full marks in finding the order of matrices?

A circle centered at P with radius 4 cm and another circle centered at Q with radius 16 cm touch each other externally. A third circle with center R is drawn to touch the first two circles and one of their common internal tangents as shown in the figure(check the link) What is the radius of the circle with center R?

http://www.directupload.net/file/d/4642/jtmndaf3_png.htm

What is the region of the RBC called which contains the pigment haemoglobin?