Ranga and Ratna named their child 'Shyama' because they admire narrator as he's the one because of whom they both met and got married Also, it's the western trend to name child after someone they admire. Also, they want to give tribute to the narrator.

Ranga did not want to get married at an early age.However Ratna was a pretty girl of eleven.Being a girl from big town she knew how to play the veena and harmonium.She also had a very sweet voice which had a great influence on Ranga thus making her a suitable bride for him.Also their face to face arouse his interest in her and thus he decided to marry her.

The dimensional formula of Coefficient of Viscosity is given by,

M¹ L^-1 T^-1

Where,

• M = Mass
• L = Length
• T = Time

Parabola: A parabola is the set of all points in a plane that are equidistant from a fixed line and a fixed point (not on the line) in the plane.  Fixed line is called directrix of parabola/

Ellipse: An ellipse is the set of all points in a plane, the sum of whose distances from two fixed points in the plane is a constant.

Hydraulic brakes work on the principle of Pascal’s law. According to this law whenever pressure is applied on fluid it travels uniformly in all the directions. Therefore when we apply force on a small piston, the pressure gets created which is transmitted through the fluid to a larger piston. As a result of this larger force, uniform braking is applied on all four wheels. As braking force is generated due to hydraulic pressure, they are known as hydraulic brakes. Liquids are used instead of gas as liquids are incompressible.

Dalton’s law of partial pressures is a gas law which states that the total pressure exerted by a mixture of gases is equal to the sum of the partial pressures exerted by each individual gas in the mixture.  For example, the total pressure exerted by a mixture of two gases A and B is equal to the sum of the individual partial pressures exerted by gas A and gas B (as illustrated below).

According to Pascal’s law, “The external static pressure applied on a confined liquid is distributed or transmitted evenly throughout the liquid in all directions”.

Following is the formula of Pascal law:

Where,

• F is the force applied
• P is the pressure transmitted
• A is the cross-sectional area

The Local government means the institution that is made up of the members elected by the local people. The Local government lends strength to the democratic set-up. The villagers and the people of towns get a chance to take part in the Government of the country.

Public taps are generally leaking. A lot of water is wasted. Design a poster not more than 50 words to make people aware of the need for saving water. You are Rohit/Reena.

The system of checks and balances is an important part of the Constitution. With checks and balances, each of the three branches of government can limit the powers of the others. This way, no one branch becomes too powerful. Each branch “checks” the power of the other branches to make sure that the power is balanced between them. How does this system of checks and balances work?

The process of how laws are made (see the following page) is a good example of checks and balances in action. First, the legislative branch introduces and votes on a bill. The bill then goes to the executive branch, where the President decides whether he thinks the bill is good for the country. If so, he signs the bill, and it becomes a law.

If the President does not believe the bill is good for the country, he does not sign it. This is called a veto. But the legislative branch gets another chance. With enough votes, the legislative branch can override the executive branch's veto, and the bill becomes a law.

Once a law is in place, the people of the country can test it through the court system, which is under the control of the judicial branch. If someone believes a law is unfair, a lawsuit can be filed. Lawyers then make arguments for and against the case, and a judge decides which side has presented the most convincing arguments. The side that loses can choose to appeal to a higher court, and may eventually reach the highest court of all, the Supreme Court.

If the legislative branch does not agree with the way in which the judicial branch has interpreted the law, they can introduce a new piece of legislation, and the process starts all over again.

• Mitosis results in the production of diploid daughter cells with identical genetic complement usually.
• Cell divides by mitosis to restore the nucleo-cytoplasmic ratio.
• Helps in cell repair.
• Mitotic divisions in the meristematic tissues result in a continuous growth of plants throughout their life.

The story 'Ranga's Marriage' is set in a village Hosahalli, which was in the erstwhile Mysore state. In those days, there were very few people in Hosahalli who knew English. Like today, even during those days, English occupied a very prominent place in the hearts and the minds of people. The village accountant mustered enough courage to send his son, Ranga, to Bengaluru for higher studies. When Ranga returned home, it became almost a festive occassion for the entire village.   People had a lot of respect for Ranga because he knew English, which was a very precious commodity, but very few people in the village knew English. Even a simple word in English like 'change' was not heard of. When Rama Rao's son uses this word, even the narrator could not understand. He had to ask Ranga the meaning of the word. The author, in his narration, shows that he has a positive attitude towards English, but he also asserts that learning a foreign’ language or .knowing it need not affect our tradition and culture. This is evident by the emphasis on Ranga wearing the sacred thread and doing 'namaskars' to the elders.    

The Term "feudalism" has been used by historians to describe the economic, legal, political and social relationships that existed in Europe in the medieval era.

The feudal system was a pyramidal or a hierarchical system which flourished during medieval period in Europe. Its four main features were:

• The king was at the topmost level of the feudal system. Below him were nobles known as barons followed by knights.
• The serfs or the peasants occupied the lowest strata in the feudal system.
• The Castle was the chief characteristic of feudalism. The feudal Lords lived in huge castles or forts. The living house and court of the Lord existed inside the castle.
• The king gave lands to barons and the latter provided troops to the King.

Characteristic features of Phylum Ctenophora:

i. They show biradial symmetry and are triploblastic.

ii. They are characterized by the presence of eight rows of cilia that help in locomotion.

iii. Ctenophores possess sticky cells called colloblasts to capture prey.

iv. They lack skeletal, respiratory or excretory system.

Examples : Hydra, Tubularia, Bougainvillea, Hydractinia, Eudendrium, Pennaria, Obelia, Sertularia, Plumularia