a. India is an agricultural country.

b. Nearly two-thirds of its population depends directly on agriculture for its livelihood.

c. Agriculture is the main stay of India's economy.

d. It accounts for 26% of the gross domestic product.

e. It ensures food security for the country and produces several raw materials for Industries.

f. Agricultural development is therefore, a precondition of our national prosperity.

How many origins can have stress causal? Answer: Mental, Physical, Social, Financial.

The modern forms of money include currency and deposits in bank.Currency which are paper notes and coins in form has been authorised by the govt. of India. Though they are not made from precious metal or of everyday use but being legalised by the RBI these act like medium of exchange in settling transactions smoothly. Also,these have provided a safe and secure way for the people to handle their transactions.
Now,with the gradual changes people have now started opening their account in bank to keep the money as demand deposits where their money is safe, they get interest on their deposit and also can avail cheque facility where they can settle payments without the use of cash.Here, this signifies the role of bank and hence it as been claimed that the modern form of money are closely linked to the modern baking system.

<a data-ved="2ahUKEwiIg8KthZXsAhVw63MBHYkXB2oQwqsBMAl6BAgSEAU" href="https://www.youtube.com/watch?v=o3i18GKJeJc" ping="/url?sa=t&source=web&rct=j&url=https://www.youtube.com/watch%3Fv%3Do3i18GKJeJc&ved=2ahUKEwiIg8KthZXsAhVw63MBHYkXB2oQwqsBMAl6BAgSEAU" rel="noopener" target="_blank">Detecting & Correcting Errors-Editing | English Grammar ...</a>

Mendel selected garden pea plant for his experiments because of the following characteristics:

(i) The flowers of this plant are bisexual. 

(ii) They are self-pollinating, and thus, self and cross pollination can easily be performed. 

(iii) The different physical characteristics were easy to recognise and study. 

(iv) They have a shorter life span and are the plants are easier to maintain.

If Tan A = 3/4, then find the other trigonometric ratio of angle A.

sol) Tan A = Opposite side = 3
                      Adjacent side    4

.^., opposite side : adjacent side = 3:4

For angle A, 

opposite side = BC=3k

Adjacent side =AB=4k(where k is any +ve no)

Now, we have in triangle ABC( by Pythagoras theorem) 
 

AC^2 = AB^2 + BC^2

=>(3k)^2 + (4k)^2 = 25k^2

AC = √25k^2

=> 5k = Hypotenuse 

Now,we can easily write the other ratios of trigonometry

sin A = 3k = 3
             5k    5

cos A = 4k = 4
             5k    5

cosec A =   1      =  5
                 sin A     3


sec A =   1     =   5
             cos A     4


cot A =   1      =  4
             tan A     3

The water of crystallization means having a fixed number of molecules present in one formula of a unit of salt. Crystal salts with water of crystallization are known as hydrates. The other names of water crystallization are crystallization water or water of hydration.

The water of crystallization is caused by forming purified crystals from an aqueous solution. These crystals do not include contaminants. These crystals are easily affected by the heat.

Examples of water of crystallization are proteins with more than 50% of the water of crystallization and copper sulfate pentahydrate with five molecules of water of crystallization.

Full form of pH is power of hydrogen or potential of hydrogen

Its is used to determine the acid or base levels of the substances. 0 to 7 is considered acidic 7 Is neutral and 7 to 14 is basic.

Tooth decay occurs when pH falls below 5.5 because the mouth becomes acidic. And the accumulation of acids erodes the teeth. That's why we use basic toothpastes to brush our teeth

Let the speed of car at A be x kmph

and the speed of car at B be y kmph

As per the question,

5x - 5y = 100

 x - y = 20 ... (1)

and x + y = 100 ... (2)

Solving (1) and (2), we get,

x = 60 and y = 40

 Speed of the car at A = 60 kmph

Speed of the car at B = 40 kmph

India is the world's largest consumer of sugar. And in recent years, India became a close competitor with Brazil for the top producer spot, now producing around 30m tonnes annually. Given their massive consumption and production, the industry is very large in India.

2(sin⁶θ + cos⁶θ) - 3 (sin⁴θ + cos⁴θ) + 1 
=2[(sin²θ)3 + (cos²θ)3] -3[(sin²θ)2 + (cos²θ)2]+1
=2[(sin²θ + cos²θ)3 -3sin²θcos²θ (sin²θ + cos²θ)] -3[(sin²θ + cos²θ)2
-2sin²θcos²θ]+1
The algebraic identity
a³ + b³ = (a+b)³ - 3ab(a+b) and 
a² + b² = (a+b)² - 2ab
are used in the above step where
a = sin²θ and b = cos²θ.
writing sin²θ + cos²θ = 1, we have 
= 2[1-3 sin²θ cos²θ] -3[-2 sin²θcos²θ] + 1
= 2-6 sin²θcos²θ -3 + 6 sin²θcos²θ + 1
= -3+3=0                 

Painting is the practice of applying paint, pigment, color or other medium to a solid surface. The medium is commonly applied to the base with a brush, but other implements, such as knives, sponges, and airbrushes, can be used. In art, the term painting describes both the act and the result of the action.

A gland is an organ in the body made of a group of secreting cells. There are several kinds of glands in a human body some of the most common glands are

• Salivary glands - secrete saliva
• Sweat glands- secrete sweat
• Mammary glands- secrete milk
• Endocrine glands - secrete hormones 

The preserved remains of animals or plants or other organisms from the distant past are called fossils. These fossils tell us about many extinct animals and also give insights into how the evolution could have taken place.

Evolution is the successive alteration in inherited characteristics over an extensive span of time, typically over generations.

• Evolution relies on genetic variation in a population which affects the physical characteristics of an organism. Certain physical characteristics may give advantage to the individuals which can be transferred to their offspring.
• The evidence of evolution is one of the fundamental keystones of modern biological theory. It is the only way which can prove all the proposed theories of evolution.
• We have a number of evidences to prove the biological evolution namely fossils, comparative anatomy and embryo development pattern.

Physical properties of metal

• Metals are solid except mercury that is found in liquid state at room temperature.
• They are hard and tough except sodium and potassium that can be cut with a knife.
• They are lustrous i.e. they shine in light because metals possess free electrons that vibrates on getting in contact with light.
• They have high melting points except caesium and gallium have very low melting point.
• They are good conductors of heat and electricity. The best conductors of electricity are silver and copper whereas lead and mercury are comparatively poor conductors.

Physical properties of non-metals

• Non-metals may be either solids, liquids or gases.
• Solid non-metals are brittle and break down into powdery mass on striking with a hammer except diamond which is the hardest non-metal.
• They have a dull luster but iodine is lustorous.
• They have low melting points except diamond that has very high melting point.
• They are poor conductors of heat and electricity except graphite.
• They are not malleable.
• They are not ductile.
• They are not sonorous.
• Examples are carbon, Sulphur, oxygen, phosphorous and many more.

Platinum, gold and silver are used to make jewellery because these are low reactive metals so rarely corrosion occur (In silver) and hence do not lost their shine and lustre.

• Alloy is a metal made by combining two or more metallic elements, especially to give greater strength or resistance to corrosion.
• They are homogeneous mixture of two or more substances.
• An example of an alloy is the tin in the mixture of copper and tin that makes bronze.
• Another example of an alloy is brass, which is made from copper and zinc.

No . It is deleted from previous year only

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.

Deleted syllabus of CBSE Class 10 English

Few of traditional water harvesting systems are:

Paar harvesting system: This practice is majorly implemented in desert areas in Rajasthan. In this process the water is collected from the catchment and left to percolate in soil.

Talaab: This is most ancient type of water harvesting system. These Talaabs are reservoirs that may be natural or man made. The water stored in the reservoirs are majorly used for drinking and irrigation.

India have already finished 70 years after it received it's independence. Fight for independence wasn't a easy one. We mustn't forget that freedom is the blood of many fighters. We must try to contribute to develop India. India is still a developing country. So every citizen of India must contribute to its development.

Some measures which would handy for india's development mission :

A) Helping the poor people in the country :- we need to help the poor people in the country. We must help the needy. Government has to provide basic requirements to the poor.

B) Stopping Corruption :- Corruption is a major issue in the country. We need to stop it. The situation at now is " Police comes for 100 rupees not by dialing 100 ". This situation must change.

C) Improvement in the social status of women :- Women should be given equal importance with men in all regards. We should educate children to respect women. We see that crime rate against women is increasing day by day. It is also to be taken care that women's should be respected.

D) Providing great status to farmers :- Farmers are truly the back bone of India. We see most of the Indian farmers are poor.we must try to improve their financial status.

E) Providing Employment :- We must provide employment to the youth. These days even a person who is doctor in some subjects [ Ph.D] is just roaming searching for jobs.

F) Encouraging the children and giving freedom to Intelligents:- Children are the future builders of the nation. We must make them grow in a friendly manner. They must be encouraged to think about the country and development. We must also allow the intelligent thinkers to express their ideas and initiatives as they may become a crucial factor in developing.

G) Exploitation of rights is seen every where, Not the intelligents get job but the one who are rich. Many sectors has many degrades. The sectors should consider it their responsibility, so that everything works out well for making India developed.

India being developed isn't a goal which can be achieved by a single individual, but by everyone. But the mission to development can be achieved only if a single individual that is self, be passionate and inspire all others to walk for developing.