(i)  Limited scope: Arrhenius concept is limited to aqueous medium only. It fails to explain the behaviour of acids and bases in a non-aqueous solvent like ammonia,sulphur dioxide,alcohol, etc.

(ii) According to Arrhenius, the acidic and basic properties are due to H⁺ and OH^–ions respectively. However, these ions do not exist as such that readily get hydrated and represented as H⁺ (aq) and OH^– (aq).

(iii) It fails to explain the acidic nature of CO₂, SO₂, SO₃, N₂O₅ which do not contain any hydrogen.

(iv) It fails to explain the basic nature of CaO, NH₃,Na₂CO₃ which do not contain any hydroxyl group.

let's look at the roles of a teacher. In short, a teacher teaches, but they also design the educational content to pass knowledge to students. Teachers are responsible for assessing students' learning and skills through testing or other assignments designed to illustrate the students' abilities. Through these assessments, teachers are often expected to identify at-risk students and bring those students to the attention of the proper departments within the school.

In short, a teacher is much more than a person who presents information.

Now, what is the role of a special education professional? A special education professional's roles include those of a traditional classroom teacher and of a support service provider. The difference between a special education professional and a mainstream teacher is that the special education professional performs all duties with and for students with varying degrees of disability and not all duties are related to teaching. All teachers must be aware of laws that regulate the education environment, but special education professionals must also be aware of the laws pertaining to people with disabilities. As we discuss special education professionals, we should first discuss their responsibilities to their students as vulnerable individuals.

1. What laburnum is called in your language
A n s w  e r 
In hindi, it is called 'Amaltaas'.

Mr. Crocker Harris is a middle-aged senior teacher in the same school where Frank is also a teacher. Mr. Harris teaches Latin to students. He is a very strict teacher and enjoys an admirable command over his students. He follows rules and regulations of the school quite meticulously. He is strict with his students; but he is not a sadist. He does not want his students to like him; he wants them to make sincere efforts in learning. He gives extra-work to students who show carelessness and make mistakes. Though he is strict, his students admire him.

Mr crocker harris was middle-aged schoolmaster

On a bright sunny day four people interlinked with each other’s fortune meet unexpectedly.

Apisi is a kind man like his tribe and is very welcoming.

Kagiso is an African Slave and works of his German Master.

Joe King is a wealthy German who has come in Gold Rush and is Master of Kagiso.

Le Wei is a Chinese labourer.

Apisi to Le Wei, when both of them were collection wood.

Apisi: Look who is coming, A German Man with his slave and a dog.

Le Wei: Better we run.

Apisi: No, Lets welcome him that is what we do that is what our Hopi Tribe culture is.

Apisi and Le Wei Welcomes Joe King and Kagiso, they rest for a while and soon and slowly indulge in discussion.

Apisi: Europeans exploited us looted us, they became greedy, hunted animals.

Joe King: This is part of trade and business.

Le Wei: We have come here to work, we build tracks, dig lands, work very hard yet we are paid very low.

Kagiso: I was a free man in my country, I use to roam in my rice field and herd by sheep’s until one day I was enslaved.

Joe King: Kagiso, I gave a good price for you, We Europeans gave you blankets, vessels, guns and alcohol.

Apisi: And you in greed, sold the fish and furs in Europe to gain profits. Because of your impatience to get Fur you slaughtered hundreds of animals and we now fear that the animals will take revenge for this destruction.

Kagiso: Let me go Mr King.

Joe King : We have to travel far now ,Mr Apisi and Mr Wei if you wish you may join, I would give something to you in return for your help.

<i>*A bell rings.</i>

Apisi: It’s our prayer time. I should be going.

Le Wei: Good bye Mr King and Kagiso.

Apisi: May you find your gold Mr King.

Joe King: Sure, I will……

And they all departed and went to their respective works

In the story Mothers day, we see the story of a family. This story is set in the 1950s and reflects some of the practices during those times. We see that in the family everyone treats Mrs. Person like a servant and only look for her when they need some work to be done.
This happens because of the negligence on the part of Mrs. Pearson. Since she never opposes such behavior everyone in the family thinks that it is okay for them to treat her in such a way.

The entire organism can be preserved by using formalin, alcohol (70-90%) or by freezing. But to preserve the skeleton of animals or dry specimen the following method is used:

• Removal of soft tissues: surplus soft tissues from bones was removed by cutting them. The bones were then transferred to 10% NaOH solution and then boiled.

• Removal of fatty tissues: by immersing bones in chloroform.

• Bleaching: the dried bones were transferred to Hydrogen peroxide for bleaching.  

• Theses bones are then dried and can be preserved for a long time

A strong wind was blowing when Tut's body was being taken out of its resting place which was the Egyptian cemetery named the Valley of the Kings. There were dark clouds in the sky shielding the stars from view. There was something eerie in the atmosphere when Tut's body was disturbed. But the wind had stopped when the CT scan was over and Tut's body was brought back to where it belonged. It was winter and the wind was cold and still like death. 

A man has to learn a lot of things from his past to face the present for a bright future. One can never learn only from imagination. We need to have solid, concrete proof in front of us to enhance our knowledge. E.g., if King Tut's mummy was not subjected to scientific scrutiny, we would never have known more about the great and the last heir of a powerful family that had ruled Egypt for centuries.   There is certainly a need to use scientific invention to find what happened to someone, centuries ago. If we want to know what happened long time back, we can read about it in History. The scientific, scrutiny of King Tut's mummy helped the modern world to discover a lot of things about the king that would, otherwise, have remained unknown. King Tut v/as the last heir of a powerful family who died young. Whether he has murdered or died a natural death is a matter of interest to archaeologists.  

 Carter had to chisel away the solidified resins to raise the King's remains. Answer Carter had to chisel away the solidified resins to raise the King's remains because the ritual resins had hardened, cementing Tut to the bottom of his solid gold coffin, which no amount of legitimate force could move. 

King Tut's body has been Subjected to repeated scrutiny. King Tut's body has been subjected to repeated scrutiny because right from the time of the discovery of his tomb in 1922, the modern world has been curious to find out what happened to him, with murder being the most extreme possibility.

The three phases of the author’s relationship with his grandmother before he left the country to study abroad are given below.

The first phase was the period of the author’s early childhood. During this phase, he used to live with his grandmother in the village. The grandmother used to take care of him from waking him up and getting him ready to accompany him to the school. Both shared a good friendship with each other.

The second phase was the time when the author and the grandmother moved to the city to live with the author’s parents. This was a turning point in their friendship because now they ‘saw less of each other’.

The third phase was the time the author joined the University. He was given a room of his own and the common link of their friendship was snapped. The grandmother turns to wheel-spinning and reciting prayers all day long. She accepts her seclusion with silence.

Electronic configuration of Chromium, with atomic number 24=1s²2s²2p⁶3s²3p⁶4s¹3d⁵.

Electronic configuration of Copper, with atomic number 29=1s²2s²2p⁶3s²3p⁶4s¹3d¹⁰.

Martin Luther was the leader of the Protestant Reformation Movement. Its chief gospels were the following.

• A person is not required to be priest in order to establish contact with God.
• It is faith that guides people to the right path and entry into Heaven that is salvation.

Adult Franchise means all adult citizens of the country should have the right to vote without any discrimination of class, caste, class, religion, or gender. It is based on the basic principle of democracy, which we call equality. It stresses that the right to vote should be equally available to all. It is the bedrock of a democratic system. It enables all citizens to be involved in the governance of their state. 

Franchise literally means the right of the people to vote and elect their representatives. The word franchise is derived from the French word ‘franc’ which means ‘free’. In history, it took much time in making itself a universal law. In fact, this was one of the major demands in the long-drawn struggle for democracy. Till date, not all the countries of the world are practising this law. India had implemented this principle on January 26, 1950. Now the minimum age for exercising franchise is 18 years in our country. One must qualify certain grounds for the adult franchise in India. These are:-

• One must be a citizen of India,

• One must have attained 18 years of age,

• One must not be of unsound mind,

• One must not have been declared bankrupt by a competent court

Martin Luther was the leader of the Protestant Reformation Movement. Its chief gospels were the following.

• A person is not required to be priest in order to establish contact with God.
• It is faith that guides people to the right path and entry into Heaven that is salvation.

The distribution of electrons into different shells, sub shells and orbitals of an atom is called its electronic configuration.

The electronic configuration of any orbital can be represented as:  nl^x

n is the number of principal shell, l = symbol of the sub shell or orbital, x= number of electrons present in the orbital

4p¹ means that p- sub shell of the 4th main shell contain one electron.