• In the 19th and the 20th centuries, tribals in many regions of India rose in rebellion. Birsa Munda was a tribal leader and a folk hero who belonged to the Munda tribe, born in the mid-1870’s. He was impressed by the sermons of the missionaries.
• Birsa also spent time under a well-known Vaishnav preacher, and, influenced by his teachings, started giving importance to purity and piety.
• He started a movement to reform the Munda society. He went against the British, the missionaries, moneylenders, traders and Hindu landlords.

 Anne's entire class was anxious and nervous since their teachers were having a meeting. There they were to decide who would be promoted to the next class and who would be detained. So, her entire class was quaking in its boots.

Anne's entire class was anxious and nervous since their teachers were having a meeting. There they were to decide who would be promoted to the next class and who would be detained. So, her entire class was quaking in its boots.

Her father, Otto Frank, was a lieutenant in the German army during World War I, later becoming a businessman in Germany and the Netherlands. Annehad a sister named Margot, who was three years her senior. Otto was the only member of his immediate familyto survive the concentration camps.

Mendel performed an experiments in which he took a tall plant with round seeds and a short plant with wrinkled-seeds. In F1, They were all tall and had round seeds. Tallness and round seeds were thus dominant traits. When, he used these F1 progeny to generate F2 progeny by self-pollination, he found that some F2 progeny were tall plants with round seeds, and some were short plants with wrinkled seeds. At the same time there tall plants, but had wrinkled seeds, while others were short, but had round seeds. Thus, Mendel’s experiments show that the tall/short trait and the round seed/wrinkled seed trait are independently inherited.

Business refers to those economic activities, which are connected with the production or purchase and sale of goods or supply of services with the main object of earning profit.

Economic activities may be divided into three major categories i.e. (i) Business (ii) Profession (iii) Employment

Business refers to those economic activities, which are connected with the production or purchase and sale of goods or supply of services with the main object of earning profit. People engaged in business earn income in the form of profit. 

Profession includes those activities, which require special knowledge and skill to be applied by individuals in their occupation. Such activities are generally subject to guidelines or codes of conduct laid down by professional bodies. Those engaged in professions are known as professionals. For example, doctors are engaged in the medical profession and are subject to the regulations of the Medical Council of India, the concerned professional body. Similarly, lawyers are engaged in the legal profession, governed by the

Bar Council of India and Chartered Accountants belong to the accounting profession and are subject to the regulations of the Institute of Chartered Accountants of India. 

Employment refers to the occupation in which people work for others and get remunerated in return. Those who are employed by others are known as employees. Thus, people who work in factories and receive wages and salaries are in the employment of factory owners and are employees of the factory. Similarly, people who work in the offices of banks, insurance companies or government department, as managers, assistants, clerks, peons or security guards are the employees of these organisations.

1. The yarn in India is produced by small industries and units which largely cater to local markets. Thus, while many spinners export cotton yarn, many garment manufacturers have to import fabric. Therefore, there is a mismatch between the two.

2. Most of the machinery installed in cotton mills are outdated and need to be replaced.

3. Irregular power supply has hampered production.

4. The cotton industry is facing tough competition from the fibre industry. 

Polynomial   P(x) = x² - 6 x + a
Given  α and  β  are the roots.     To find a , if 3 α + 2 β = 20.  ---(1)

From the quadratic expression:
    α + β = 6       ---(2)
    and   α β = a  --- (3)

Multiply equation (2) by 2 and subtract from (1) to get:
    α = 20 -12 = 8

Substitute this value in(2) to get:    
     β = 6-8 = -2   

Substitute these in (3) to get:    a = α β = -16.

• The boundary surface diagram for the s orbital looks like a sphere having the nucleus as its centre which in two dimensions can be seen as a circle.
• Hence, we can say that s-orbitals are spherically symmetric having the probability of finding the electron at a given distance equal in all the directions.
• The size of the s orbital is also found to increase with the increase in the value of the principal quantum number (n), thus, 4s > 3s> 2s > 1s.

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Alveoli are the balloon like structures present in lungs.

After Hitler took over Germany, he assigned Hjalmar Schacht, the responsibility of economic recovery. The various economic reforms carried out under the Hitler's rule were

1. Full production and full employment through a state-funded work-creation programme. This project produced the famous German superhighways (autobahns) and the people's car, the Volkswagen.

2. Proposal of compulsory labour for male citizens, comprehensive agricultural reform, interest-rate reduction, looser union wages to promote industrial growth and new jobs in road and waterway construction.

3. Accumulation of resources by undertaking aggressive foreign policy and expansion of territory.

Two-way communication creates a more democratic environment, whereby people can share their thoughts, ideas and opinions, regardless of corporate hierarchy, and improve relationships right across the structure. Effective two-way communication is required in order to solve problems better.

Mohandas Karamchand Gandhi is the father of nation.

Industrial pollution is the introduction of waste material from factories, mines and construction operations into the environment. It constitutes land pollution, air pollution and water pollution.

(i)Industrial pollution causes deterioration of the health of residents who live near industries

(ii)Industrial pollution causes wildlife to be affected in a severe manner.

(iii)With the rise in industrial pollution, global warming has been increasing at a steady rate.

(iv)With so many small, mid and large scale industries coming up, air pollution has taken toll on the health of people.

(v)Soil pollution is creating problems in agriculture and destroying local vegetation.