Biology: Important Diagrams from All Chapters

Here’s a PDF file linked to all important diagrams you will need to prepare for your exams. They are all properly labelled and have been checked thoroughly by a certified Biology teacher. I thank my teacher, Mrs. S***** M*****, for the detailed examination.

Here’s a link to the PDF file for the aforementioned notes:

Biology – Important Diagrams
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Biology – Important Diagrams by Helpline for ICSE Students (Class X – Class 10) is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
You may print these notes through the PDF file and refer to them as required. We would appreciate it if you abstain from reproducing any part of these notes without our prior permission. For more information, please contact us. Thank you.

Check it out! I’m sure it will help you, tons! :)



Hindi: Useful Websites

As per readers’ requests, here are a few YouTube links to notes for Hindi:


Audio-visual Question and Answer Revision:

Gadya Sankalan: Usaki Maa

Chandragupta Vikramaditya Part II

Ekanki Suman: Mel Milap


Hindi Grammar:

Nirdheshanusar Vakya Banaye


Here’s a link to their YouTube channel. They also have a couple audio-visual videos for Geography: Water Resources, Civics: The Surpreme Court, and History: Mahatma Gandhi and the National Movement


Do check them out! :)


Geography: How to Solve Topographical Maps: Full Course (Notes Part 2)

On a reader’s request, here is a website ( written by Saurav Krishnan, which perfectly gives the basics to solving a topography map.  It also has solved questions and answers regarding topography. Please go through it! You will definitely find it easier to solve a toposheet after reading the following posts:

Chapter 1 – Fundamentals of Maps

Chapter 2-Profiles Of Survey Maps 45/D7 and 45/D10

Chapter 3- Interpretation of Topographical Maps

Interpreting Toposheets

Interpreting Toposheets -2

Revision -Important Toposheet definitions

Indian Topographic Maps (out of syllabus)

Some Common Questions Based On Toposheets

I apologize to the reader who requested this for taking so long. I hope you find this useful! Thank you for your patience and keep visiting! :)

Question of the Day #3

The answer to the previous question is: Since copper is a good conductor of heat and it has a low specific heat capacity, it conducts the heat energy and takes less amount of heat energy from its contents to acquire the temperature of its contents. Hence, it is used in making a calorimeter.

Congratulations to Harsh, Harsimar, and  Kritika for getting it right! :)

Question of the Day: Name a reddish brown deliquescent salt.

Leave your answers in the comment section below! I will update this tomorrow with the correct answer. :)

A Great Website for English Notes…

Hey everyone! I have received quite a few requests by readers asking me to put up notes on English Literature. Since I do not have the time at present to fulfill every request, I thought I would share this website that I came across while browsing the Internet.

ICSE English Help – An Approach to ICSE English

It has notes for grammar and language, composition writing, letter writing, etc. along with notes and questions on the various poems, lessons, dramas, etc. Do visit the website! Thank you! :)