Class 11

The universal set U includes the set of all natural numbers. It includes both the even and odd numbers. U= {1,2,3,4,5,6,7,8,9,10.}. U comprises all elements of Set A and Set B.

Sets is a collection of objects or members which are distinct objects. Normally, the objects are listed within curly braces {}. Example of a set - set of vowels in English - {a, e, i, o, u). Sets class 11 includes multiple exercises on sets concepts. 

Yes, one can see the atoms, but not with the naked eye. One needs to use specialised microscopes to see the atoms. To see the atoms, one can use electron microscopes such as electron ptychography and TEM, or they can also use Scanning Tunneling Microscope (STM).

Helium (He) is the smallest atom. It has a smaller physical size as the protons in Helium create a stronger nuclear charge to pull its electrons closer to nucleus. The hydrogen is the lightest element.

In molecules, atoms are held together by the chemical bonds, that are strong attractive forces. The main two types of chemical bonds include ionic bond and covalent bond.

The following are the steps one must follow to draw the structure of an atom: First, find out the atomic number of the element on the periodic table, then draw a small central circle called the nucleus that includes the protons and neutrons. Next, there will be concentric circles around the nucleus for electron shells. Next, fill these shells with dots or crosses for electrons. One can fill around a maximum of 2 electrons in the first shell and a maximum of 8 in the second shell, and so on.

It talks about the atom. According to the Greek philosophers earlier, the atoms were the smallest part of matter that cannot be further divisible. Later, Dalton's atomic theory suggested that atom is the ultimate particle of matter. This theory was challenged later on by experiments done towards the end of the 19th and beginning of the 20th century. These experiments found that atoms are made up of electrons, protons and neutrons.

Once the TBSE Madhyamik result is out, students should take time to understand and analyze their strengths and weaknesses and their career goals. Based on marks and interest, students should decide which stream in class 11. Science, Commerce, and Arts all have great career opportunities. Students should also talk to their parents, friends and teachers before making a final decision. Choosing the right stream early will definately help the students move toward a better future with confidence.

A major chunk of the entrance exam syllabus for BTech Mechanical Engineering is based on the Class 11 and Class 12 class topics, and thus it is highly recommended to study the 11 and 12 NCERT books that serve as a common source of some direct questions in the entrance exams. Popular exams like JEE Main and MHT CET syllabus give a lot of weightage to Class 11 and 12 concepts of Physics, Mathematics, and Chemistry. 

Till Class 10, we studied every subject on the base level, but from Class 11, the streams are segregated and allotted to students to level up their education. If you opt for Humanities in Class 11, and you have a Political Science subject, there might be chances that you'll gain a deeper knowledge of the subject and explore new sub-topics.
That's the reason why most students find Class 11 subjects relatively tougher.