• In a democratic government, the working of the government machinery is transparent. It means a citizen can enquire if any decision was taken based on prescribed norms and procedures. Thus, a democratic government follows procedures and is accountable to the people.
• The government is legitimate if it is elected by the citizens of the country in free and fair elections.
• A government is said to be responsive government when it responds to the demands of the public and considers it very much part of the government. For example, after a prolonged period of mass protest and negotiation, the UPA government had to finally agree to people’s demand and introduce the Lokpal Bill in the Parliament. Even though, there still remains certain glitches in its implementation, the very fact that the government was forced to act on people’s demand is testimony to its responsive credentials.

x² +3x - (m+2)(m+5) = 0
⇒ x² + (m+5)x - (m+2)x - (m+2)(m+5) = 0
⇒ x (x + m+5) - (m+2)(x+m+5) = 0
⇒ (x+m+5)(x-m-2) = 0
⇒ x = - m-5. and m+2
Roots are (-m-5) and (m+2)

Chaos means any confused, disorderly mass
a state of utter confusion or disorder; a total lack of organization or order. any confused, disorderly mass
CHAOS= अफरा तफरीह ,  गड़बड़ी , अस्तव्यस्तता 

1 dioptre of power of a lens is described as the unit of measurement of the optical power of a lens or curved mirror equivalent to the reciprocal of focal length (f). Measurement of the focal length in a meter.

The SI unit of power of lens is dioptre whose focal length is one meter, which is denoted by the letter D.

1 dioptre (D) = P = 1/f

Where f = focal length

CBSE Class 10 Sample Papers 2021 - The Central Board of Secondary Education (CBSE) has released new sample papers with the marking scheme for the upcoming Board Exam 2021. All these sample papers are prepared according to the reduced CBSE syllabus. With the release of the CBSE sample papers, preparations for the board exam will take a kick start as students can now actually prepare according to the pattern followed in the sample papers

Click on the given link:

<a href="http://cbseacademic.nic.in/SQP_CLASSX_2020-21.html" rel="noopener" target="_blank">Class X 2020-2021 SQP and MS - CBSE | Academics Unit</a>

CBSE Class 10 Sample Papers 2021 - The Central Board of Secondary Education (CBSE) has released new sample papers with the marking scheme for the upcoming Board Exam 2021. All these sample papers are prepared according to the reduced CBSE syllabus. With the release of the CBSE sample papers, preparations for the board exam will take a kick start as students can now actually prepare according to the pattern followed in the sample papers

Click on the given link:

<a href="http://cbseacademic.nic.in/SQP_CLASSX_2020-21.html" ping="/url?sa=t&source=web&rct=j&url=http://cbseacademic.nic.in/SQP_CLASSX_2020-21.html&ved=2ahUKEwio8sOKqa_tAhXWzzgGHQ-FD3gQFjAAegQIBBAC" rel="noopener" target="_blank">Class X 2020-2021 SQP and MS - CBSE | Academics Unit</a>

In Bholi’s life, love and encouragement made the impossible possible. Her story showed how, after the teacher handed over the key of education to her, she was able to unlock the door that confined her to the stereotypes and expectations yet lack of appreciation or recognition that the society has imposed on women. Bholi’s excellent character is seen when she expresses her desire to serve the very parents who treated her with disdain as long as she could remember. Also, she was ready to married the unprincipled Bishambernath so as to not go against her parents’ wishes and to protect his dignity. When she saw that the greedy and unruly Bishambernath, her prospective husband was charging her father for upholding his dignity, Bholi decides that her family does not need such an unworthy relationship. Because of her education, she was bold enough to protest and make her own decision as to how she would lead her life and support her parents. Her protest is seen by the society as her insolence. Her character deemed it fit to ignore them. Also, a contrast is seen when Bholi’s sisters become envious of their sister’s rich prospective husband while Bholi refused that so called ‘luck’ because she knew that a person was to be judged by his character and not his wealth.

Ironically, Bholi was sent to school as her mother believed she was a burden and let the teachers at the school worry for her. The teacher showed affection and encouraged her to shed her fear. She was assured by her teacher that she would speak like others one day.

Years of hard work transformed Bholi into a bold and confident young woman. Bishamber refused to marry Bholi due to her appearance and demanded five thousand rupees. Bholi saw how her father was humiliated for no reason. She refused to marry a greedy, mean and contemptible coward. She assured her father that she would serve him and her mother in their old age. She had a mission in her life; she would spread the light of education in her village.

Bholi's mother was an orthodox village woman. She was against the idea of sending her daughters to school. She thought that education would affect their marriage prospects adversely. She thought that education would ruin the marriage prospects of their daughters but Bholi was a simpleton. There was no possibility of her marriage. 

Bholi never knew anything about school. When her father suddenly caught her by the hand, she was frightened because she thought she would also be sold as her old cow, Lakshmi. When she saw that she got to wear decent clothes and got well groomed, she felt that she was going to a better place than her home.

ncert books and  sample papers are enough

Sample papers help students analyse their strengths and weaknesses so that they can focus on weaker sections.

• When students work on improving their weaker sections, they perform better with practising sample papers.
• This enhances their confidence and they do their best to get good marks.
• Also, not just weaknesses, students can also practice their strong sections with sample papers to increase their marks. 

Bholi's teacher played an important role in changing the course of her life. She was polite and friendly which touched her heart. She encouraged her every time and was affectionate towards her. The teacher transformed her into a confident person who could read, write and speak clearly.This gave her the required confidence. Moreover, teacher’s appreciation and encouragement helped her overcome her low morale.

Many factors are responsible for motivating youngsters towards alcohol or drugs. Curiosity, need for adventure and excitement, experimentation are the initial causes of motivation. Some youngsters start consuming drugs and alcohol in order to overcome negative emotions (such as stress, pressure, depression, frustration) and to excel in various fields. Several mediums like television, internet, newspaper, movies etc. are also responsible for promoting the idea of alcohol to the younger generation. Amongst these factors, reasons such as unstable and unsupportive family structures and peer pressure can also lead an individual to be dependant on drugs and alcohol.

Preventive measures against addiction of alcohol and drugs:

(a) Parents should motivate and try to increase the will power of their child.

(b) Parents should educate their children about the ill-effects of alcohol. They should provide them with proper knowledge and counselling regarding the consequences of addiction to alcohol.

(c) It is the responsibility of the parent to discourage a child from experimenting with alcohol. Youngsters should be kept away from the company of friends who consume drugs.

(d) Children should be encouraged to devote their energy in other extra- curricular and recreational activities.

(e) Proper professional and medical help should be provided to a child if sudden symptoms of depression and frustration are observed.

Jamuna Tudu, a 37-year-old woman, who protects the trees spread in the 50 acres of forest land of Muturkham village of Jharkhand, from tree mafia, with a bow and arrow, is known as Lady Tarzan.

She considers trees as her brothers and also ties rakhi on them.

 She started by forming a five women group in 1998, Van Suraksha Samiti, and has more than 300 such groups now, with over 30 people in each group.

They work in shifts and with the help of tools such as bow and arrow, and also dogs they keep away the mafia.

Though India is an important producer of iron and steel in the world, we are not able to perform to our full potential largely due to:

•  High cost: Limited availability of coking coal as the amount of coking coal is limited, its cost in India is high therefore the industry faces difficulty in buying it.
•  Low productivity of labour.
•   Irregular supply of energy: There is an irregular supply of  electricity in India, so that work becomes more difficult.
•  Poor infrastructure: The technological development in India is less as compared to other countries.

Valli saved up money for her first journey by resisting the temptation to buy peppermints, toys,balloons,etc. It was difficult for her .She suppressed her desire to enjoy a Merry-go-round at the village fair.

Polysaccharides can be broadly classified into two classes: Homo-polysaccharides – are made up of one type of monosaccharide units. ex: cellulose, starch, glycogen. Hetero-polysaccharides – are made up of two or more types of monosaccharide units.

Types Of Polysaccharides

• Glycogen: It is made up of a large chain of molecules. ...
• Cellulose: The cell wall of the plants is made up of cellulose. ...
• Starch: It is formed by the condensation of amylose and amylopectin. ...
• Insulin: It is made up of a number of fructofuranose molecules linked together in chains.

refractive index = sin i / sin r
                          = sin45/sin30
                          = (1/√2)/(1/2)
                          = 2/( √2)
                           =  √2

Refractive index of a medium is defined as the factor by which speed of light reduces as compared to the speed of light in vacuum.

→ More (less) refractive index implies less (more) speed of light in that medium, which therefore is called denser (rarer) medium.

Calculation :

The refraction index, n, of a transparent medium is defined as the ratio of speed of light in vacuum to the speed of light in that medium.  The formula is n= c​/v

where the speed of light c=3×10⁸m/s and v is the speed of light in the desired medium which is given as v=2.4×10⁸m/s.

Therefore, n=3×10⁸m/s/ 2.4×10⁸m/s​=1.25.

Hence, the refractive index of the transparent medium is 1.25.