Nature contains resources. These resources are converted into usable form with the help of technology. Human beings interact with nature through technology, and create institutions to accelerate their economic development.

1) Nature is defined by the rainfall, climate, topographic features of the place and does not depend on man made or developed resources.

2) Technology is developed with the nature and natural resources of the place,technology is developed for man's facilitation.

3) Institutions develope technologies based on resources. These technologies are used to utilize better resources which expand the institutions, and in return those institutions develop better technologies for better utilization of resources.

Traits are inherited during a lifetime cannot be inherited in the successive generation as the changes do not reflect in the DNA of the germ cells. For example, a cricket player cannot pass on his skills on to his next generation as the traits acquired during his lifetime are limited only to non-reproductive cells. However, any mutations in the germ cells can result in the new traits being acquired by the successive generation.

Stomach mucus protects the gastrointestinal cells from the damage that gastric juices can cause. Gastric juices are highly acidic and, without this mucus, the acid can destroy the cells and tissues in the stomach.Mucus in the stomach is rich in bicarbonate, an alkaline compound, to help lubricate and protect the stomach. Stomach acid comes from the parietal cells, a type of stomach cell, and it is a hydrochloric acid, which is a solution of water and hydrogen chloride. This allows the environment in the stomach to be highly acidic. A high level of acidity is critical to inactivate bacteria in the food that people eat and to activate pepsinogen, a type of enzyme.

When CO2 is passed through lime water for a short duration, it turns lime water milky due to the formation of a white precipitate of calcium carbonate.

When CO2 is passed through lime water for a long time, then white precipitate of calcium carbonate which was formed initially dissolves due to the formation of soluble calcium hydrogen carbonate and solution becomes clear again.

NCERT Solutions for Class 10 Hindi Course B includes all the questions provided in NCERT Books for 10th Class Hindi Course B Subject. Here all questions are solved with detailed explanation and available for free.

Click on the following link:

<a href="https://mycbseguide.com/blog/ncert-solutions-for-class-10-hindi-course-b/">https://mycbseguide.com/blog/ncert-solutions-for-class-10-hindi-course-b/</a>

When a ray of ordinary light is passed through a triangular glass prism, it splits to form a band of seven colours.

When light passes through a prism the light bends. As a result, the different colors that make up white light become separated. This happens because each color has a particular wavelength and each wavelength bends at a different angle.

HRD Minister Ramesh Nishank announced a major CBSE syllabus reduction for the new academic year 2020-21 on July 7 which was soon followed by an official notification by CBSE on the same.

Considering the loss of classroom teaching time due to the Covid-19 pandemic and lockdown, CBSE reduced the syllabus of classes 9 to 12 with the help of suggestions from NCERT.

The CBSE syllabus has been rationalized keeping intact the learning outcomes so that the core concepts of students can be retained.

Deleted syllabus of CBSE Class 10 Mathematics

Considering the loss of classroom teaching time due to the Covid-19 pandemic and lockdown, CBSE reduced the syllabus of classes 9 to 12 with the help of suggestions from NCERT.

The CBSE syllabus has been rationalized keeping intact the learning outcomes so that the core concepts of students can be retained.

Deleted syllabus of CBSE Class 10 Social Science

A shoe manufacturer wants to sell shoes in the market and buy wheat. The shoe manufacturer
will first exchange shoes that he had produced for money, and then exchange the money for wheat. Imagine how difficult it would be if the shoe manufacturer had to directly exchange shoes for wheat without using money. He would have to look for a wheat growing farmer, who not only wants to sell wheat but also wants to buy the shoes in exchange. That is, both parties have to agree to sell and buy each other’s commodities. This is known as double coincidence of wants.

Majoritarianism is a process in which a country gives priority to the religion in majority.

It harms a country as the religion in minority gets depressed and suffers a lot.

This can be explained with the example of Sri Lanka as majoritarianism is followed their giving priority to the Sinhalas.

Majoritarianism in Sri Lanka.
 

The leaders of the Sinhala community of Sri Lanka sought to secure dominance over government by virtue of their majority.

(ii) In 1956 an Act was passed to recognise Sinhala as the only official language, thus disregarding Tamils.
(iii) The government followed preferential policies that favour Sinhala applicants for university positions and government jobs.
(iv) In Sri Lanka, maximum people believe in Buddhism. A new constitution stipulated that the state shall protect and foster Buddhism.

This led to civil war

The Balkans was a region of geographical and ethnic variations. It includes modern Romania, Balgaria, Albania, Greece, Macedonia, Croatia, Boasnia-Herzegovina, Slovenia, Serbia and Montenegro.
The resident of this region were known as "The Slaves"

• The large part of the Balkans was under the control of the Ottoman Empire.
• The spread of the ideas of romantic nationalism in the Balkans together with the disintegration of the Ottoman Empire made this region very explosive.
• One by one, its European subject nationalities broke away from Ottoman’s control and declared independence.
• The Balkan peoples based their claims for independence and used history to prove that they had once been independent.
• The Balkan states were fiercely jealous of each other and each hoped to gain more territory at the expense of the others.
• Each power - Russia, Germany, England, Austro-Hungry was keen on countering the hold of other powers over the Balkans.
• This led to a serious of wars in the region and finally the First World War.

Tan theta=4/3
tan theta=p/b
p=4,and b=3

by paithagoras theorem,
H=root under P^2+B^2
H=root under 4^2+3^2
H=root under 16+9
H=root under 25
H=5

sin theta=p/h
sin theta=4/5
cos theta=b/h
cos theta=3/5

sin theta+cos theta/sin theta-cos theta
=4/5+3/5 by 4/5-3/5
=4+3/5by4-3/5
=7/5by1/5
=7/5×5/1
=7/1
=7

As economy grows, there is a shift in labour force from Primary Sector to Secondary and Tertiary Sectors. As economy progresses, the people tend to work more in the secondary and service sectors of the economy. Workforce of primary sector gradually starts decreasing with the economic development. Hence, there is an increase in demand for goods and services produced by secondary and tertiary sectors. As a result, the share of secondary and tertiary sectors to the GDP increases and the share of primary sector to the GDP decreases.

i) The idea of a nation can be created through stories, poets and writings. Music too can help in expressing nationalist feelings or sentiments.   (ii) Romanticism, a cultural movement which emerged in Europe, sought to develop a particular form of nationalist sentiments or national feelings. The main aim of romantic artists was to create a sense of a shared collective heritage and a common cultural past.   (iii) Language also played an important role in developing the national sentiments or nationalist feeling, e.g., in Poland, language began to be used as a weapon of national resistance. The wide scale use of Polish language came to be seen as a symbol of struggle against national dominance.  

According to Euclid’s Division Lemma if we have two positive integers a and b, then there exist unique integers q and r which satisfies the condition a = bq + r where 0 ≤ r ≤ b.

HCF is the largest number which exactly divides two or more positive integers.

Since 12576 > 4052

12576 = (4052 × 3) + 420

420 is a reminder which is not equal to zero (420 ≠ 0).

4052 = (420 × 9) + 272

271 is a reminder which is not equal to zero (272 ≠ 0).

Now consider the new divisor 272 and the new remainder 148.

272 = (148 × 1) + 124

Now consider the new divisor 148 and the new remainder 124.

148 = (124 × 1) + 24

Now consider the new divisor 124 and the new remainder 24.

124 = (24 × 5) + 4

Now consider the new divisor 24 and the new remainder 4.

24 = (4 × 6) + 0

Reminder = 0

Divisor = 4

HCF of 12576 and 4052 = 4.

Let the first number be x and the second number is 27 - x.
Therefore, their product = x (27 - x)
It is given that the product of these numbers is 182.
Therefore, x(27 - x) = 182
⇒ x² – 27x + 182 = 0
⇒ x² – 13x - 14x + 182 = 0
⇒ x(x - 13) -14(x - 13) = 0
⇒ (x - 13)(x -14) = 0
Either x = -13 = 0 or x - 14 = 0
⇒ x = 13 or x = 14
If first number = 13, then
Other number = 27 - 13 = 14
If first number = 14, then
Other number = 27 - 14 = 13
Therefore, the numbers are 13 and 14.

Applying Euclid 's division algorithm,

H.C.F of 420 and 272
 

Now, The remainder becomes 0.

So, HCF of 420 and 272 is 4.

Applying fundamental theorem of arithmetic for verifying,

The prime factors are
 

Therefore, HCF of 420 and 272 is 4.

The oldest Japanese book, printed in AD 565. is the Buddhist Diamond Sutra, containing Six sheets of text end woodcut illustrations.

The constant plynomial f(x) = 0 is called zero polynomial.

A real number 'a' is called a zero of polynomial p(x) = 0

• The Election Commission announces the date of elections.
•   Its biggest function and responsibility is to conduct free and fair elections.
• It implements the Code of Conduct few days before and during polling. It can punish any candidate who violates the code of conduct.
• The Election Commission during election period may instruct the government to follow certain guidelines and ensure that the ruling party does not misuse the governmental powers.
• During elections, every government employees works under the control of the Election Commission and not the government.