# CBSE Class 11

Topic Replies Activity
Derive an expression for the apparent frequency when the source of sound 2 July 17, 2019
What are the important diagrams in (if any) chapters: 2 July 16, 2019
Find th value of x cosec(90+thetha) +x costhta cot(90+thetha)=sin (90+thetha) 2 July 16, 2019
How to calculate the oxidation number of Fe and S in compound FeS2? 2 July 16, 2019
Please explain the stability order of carbocations 2 July 16, 2019
% of Se in peroxidase anhydrase enzyme is 0.5% by weight then minimum 2 July 16, 2019
Calculate closing stock from the following : 2 July 16, 2019
14 Draw a ‘less than’ ogive and ‘more than’ ogive curves for the following 2 July 16, 2019
What are the disadvantages of friction? 2 July 16, 2019
Compare the Stability of O2, O2(+), O2 (-), O2 (2-) 2 July 16, 2019
What are coenocytic hyphae? 2 July 16, 2019
Explain the following terms: 1. Drawer 2. Drawee 3. Payee 4. Term of a bill 2 July 16, 2019
Prove cot(A+B)=(cotA.cotB-1)/cotB+cotA 2 July 16, 2019
The dissolution of Ammonium chloride in water is endothermic, but still it dissolves in water 2 July 16, 2019
In an university, out of 100 students 15 offered Mathematics only 2 July 16, 2019
A line is such that its segment between the straight lines 5x-y-4=0 2 July 16, 2019
What is capillarity? Give some applications of capillarity 2 July 16, 2019
What are diploblastic animals? 2 July 16, 2019
I want some interesting maths exhibition projects plz give some ideas 2 July 16, 2019
A motorcyclist moving with a uniform retardation takes 10s and 20s 2 July 16, 2019
How is the oxidation number of H2S4O6 +5? 2 July 16, 2019
What is the value of log(e) & 1/e?secondly if logx=-1 then find the value of x 2 July 15, 2019
Explain markoniv and anti markoniv mechanism of unnnsymetrical alkene? 2 July 15, 2019
What is law of equivalence and where it is applied in solving the numericals 2 July 15, 2019
Name the largest phylum of kingdom Animalia 2 July 15, 2019
What are elaters and state their functions? 2 July 15, 2019
Draw a well-labeled diagram of the regions of the root tip 2 July 15, 2019
Explain the types of covalent hydrides with examples 2 July 15, 2019
Draw the Lewis structures of SiCl4 and HCOOH 2 July 15, 2019
Discuss the methods for preparation of silicones 2 July 15, 2019