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(1) Pepsin: Pepsin is a proteolytic enzyme secreted in the stomach that is involved in the breakdown of proteins.
(2) Bile: Bile helps break down fats into fatty acids and also acts as a medium for excretion of bilirubin, a by-product of the breakdown of RBC's.
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The Greek War of Independence mobilized nationalist feelings among the educated elite across Europe in 1830-1848.
Greece had been part of the Ottoman Empire since the fifteenth century. The growth of revolutionary nationalism in Europe sparked off a struggle for independence amongst the Greeks which began in 1821.
Posted by Om Jee Rai 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
Computer Network is an integration of two or more than two computers. It means when computers or their associated devices are connected through a medium is known as a computer network. The medium through which computer systems are connected may be wired or wireless.
Difference:
- The Internet is a wide network of computers that is available to all whereas Intranet is a network of computers designed for a certain group of users.
- Internet is a public network and Intranet is a private network.
- Internet contains various source of information while Intranet only contains group-specific information.
- Number of internet users are very high but the number of users of Intranet is limited.
- Anyone can access the internet while Intranet is accessible only by the organization employees or admin who have login details.
Posted by Om Jee Rai 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
The inner lining of the uterus (the endometrium) goes through three phases during the typically 28 day menstrual cycle: the menstrual phase (days 1-5), the proliferative phase (days 6-14) and the secretory phase (days 15-28).
Posted by Anwesha Nayak 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
c. What is the significance of the border roads?
Solution:
Border roads are of strategic importance and these roads in the bordering areas of the country have improved accessibility in areas of difficult terrain and have helped in the economic development of these areas.
3. Answer the following questions in about 120 words.
a. Why are the means of transportation and communication called the lifelines of a nation and its economy?
Solution:
The means of transportation and communication are called the lifelines of a nation and its economy because they are the pre-requisites for fast development. Today, India is well-linked with the rest of the world despite its vast size, diversity and linguistic and socio-cultural plurality. Railways, airways, waterways, newspapers, radio, cinema, television and internet etc. have been contributing to its socio-economic progress in many ways.
Along with trade, these different means of transport and communication have enriched our life and added substantially to growing amenities and facilities for the comforts of life.
b.Write a note on the changing nature of international trade in the last fifteen years.
Solution:
Trade between countries is known as international trade. International trade has undergone a vast change in the last fifteen years. Exchange of goods and commodities have been superseded by the exchange of information and knowledge. For e.g., – India has emerged as a software giant at the international level, and it is earning large foreign exchange through the export of information technology.
International trade also depends on the relationship between the countries and other external factors like duties and tariffs on the transportation of goods. In the last fifteen years, different trade blocks have emerged which have changed how international trade was conducted previously.
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Gaurav Seth 5 years, 2 months ago
DEFINE ATOMIC SIZE (ATOMIC RADIUS) - DEFINITION
Atomic Size (Atomic Radius) is the
distance between the nucleus and valence shell.
METALLIC AND NON-METALLIC PROPERTIES - DEFINITION
<article>The tendency of an element to lose electrons and form positive ions (cations) is called electropositive or metallic character. The tendency of an element to accept electrons to form an anion is called its non-metallic or electronegative character. In each period, metallic character of elements decreases as we move to the right. Elements to the left of the periodic table have a pronounced metallic character while those to the right have a non-metallic character. Conversely, non-metallic character increases from left to right.As we move down the group the number of shells increases. This causes the effective nuclear charge to decrease due to the outer shells being further away: in effect the atomic size increases. The electrons of the outermost shell experience less nuclear attraction and so can lose electrons easily thus showing increased metallic character.</article>
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Yogita Ingle 5 years, 2 months ago
Human inputs that control location of industries are Labour, market and Transport facilities.
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Electric current is defined as the rate of flow of electric charge.
Or, electric current is the amount of charge flowing through a particular area in unit time and is given by:
I = Q / t
The S.I unit of electric current is Ampere (A).
The current through a conductor is said to be one ampere if one coulomb of charge flows through it in one second.
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Q u e s t i o n : State whether the equation (x+1) (x - 2) + x = 0 has two distinct real roots or not. Justify your answer.
A n s w e r :
So, Given equation has two distinct real roots.
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Gaurav Seth 5 years, 1 month ago
1+sin^2 theta=3 sin theta cos theta (we know that sin^2 theta + cos^2 theta =1)
= ( sin^2 theta + cos^2 theta ) + sin ^2 theta = 3 sin theta cos theta
= sin^2 theta + cos^2 theta + sin ^2 theta = 3 sin theta cos theta
= cos^2 theta + 2 sin^2 theta = 3 sin theta cos theta
On dividing by cos^2 theta, we get
= 1 + 2 tan^2 theta = 3 tan theta
Let tan theta = b
2b^2 - 3b + 1 = 0
= (2b-1)(b-1) = 0
b = 1 or 1/2
So, tan theta = 1 or 1/2.
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Gaurav Seth 5 years, 1 month ago
1. Use Euclid’s division algorithm to find the HCF of:
i. 135 and 225
ii. 196 and 38220
iii. 867 and 225
Solutions:
i. 135 and 225
As you can see, from the question 225 is greater than 135. Therefore, by Euclid’s division algorithm, we have,
225 = 135 × 1 + 90
Now, remainder 90 ≠ 0, thus again using division lemma for 90, we get,
135 = 90 × 1 + 45
Again, 45 ≠ 0, repeating the above step for 45, we get,
90 = 45 × 2 + 0
The remainder is now zero, so our method stops here. Since, in the last step, the divisor is 45, therefore, HCF (225,135) = HCF (135, 90) = HCF (90, 45) = 45.
Hence, the HCF of 225 and 135 is 45.
ii. 196 and 38220
In this given question, 38220>196, therefore the by applying Euclid’s division algorithm and taking 38220 as divisor, we get,
38220 = 196 × 195 + 0
We have already got the remainder as 0 here. Therefore, HCF(196, 38220) = 196.
Hence, the HCF of 196 and 38220 is 196.
iii. 867 and 225
As we know, 867 is greater than 225. Let us apply now Euclid’s division algorithm on 867, to get,
867 = 225 × 3 + 102
Remainder 102 ≠ 0, therefore taking 225 as divisor and applying the division lemma method, we get,
225 = 102 × 2 + 51
Again, 51 ≠ 0. Now 102 is the new divisor, so repeating the same step we get,
102 = 51 × 2 + 0
The remainder is now zero, so our procedure stops here. Since, in the last step, the divisor is 51, therefore, HCF (867,225) = HCF(225,102) = HCF(102,51) = 51.
Hence, the HCF of 867 and 225 is 51.
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