"Computer" is an "electronic device" that has become a useful device in our day to day life. Following are the areas where in computer are useful to us:

i) Information: help access internet through which we are able to access information around the globe.

ii) Entertainment: Various social media sites provide content for entertainment. Also, we have online TV series and movies that can be accessed by computer.

iii) Bill Payments: One can easily pay bills online with help of internet and saves time of physically going to the office and paying it.

iv) Ticket Reservation: Flight, railway and bus tickets can be reserved via internet.

Answer.


a) Salivary glands secrete saliva along with enzymes.Ptyalin is the strach hydrolysing enzyme secreted by salivary glands in human beings. It is also called as salivary amylase. Ptyalin secreted in the mouth brings about digestion of starch in the mouth itself. It hydrolyses starch into disaccharaides like maltose and isomaltose and other small dextrins called as limit dextrins. Ptyalin hydrolyses at about 30 percent of the starch in the mout itself.

b) Gastric glands secrete HCL, pepsinogen, mucous.Gastric juice is a secretion of gastric glands located in the lining of the stomach. It is mainly made up of electrolytes, mucus, enzymes, hydrochloric acid, intrinsic factor etc. HCl secreted by parietal cells provides acidic medium for many enzymes to get activated. Neck cells secrete mucus which lubricated the passage of the food. Chief cells secrete pepsinogen which helps in the digestion of proteins after getting activated into pepsin by HCl. Enzymes of the gastric juice bring about digestion of different components of the food. Gastric lipase helps in emulsification of lipids in the stomach. Partially digested food in the stomach is called as chyme and this passes on into small intestine
c) Intestinal glands are present in the inner lining of small intestine. These secrete various enzymes which aid in the process of digestion of all the components of food. Maltase, sucrase and lactase bring about digestion of carbohydrates. Peptidases help in digestion of proteins. Enterokinase helps in the activation of other enzymes

d) Liver is the largest gland in our body. The liver secretes a yellowish green watery fluid called bile. It is temporarily stored in a sac called the gall bladder. Bile provides an alkaline environment for many enzymes to get active. It also reduces the acidity of chyme. Bile plays an important role in the digestion of fats. Bile is sent into duodenum through a narrow tube-like structure called the bile duct. Bile breaks the larger fat molecules into tiny droplets, thereby increasing their surface area, which helps in the digestion of fats easily.

e) Pancreas is the mixed gland. It acts as both endocrine and exocrine gland. The pancreas secretes the pancreatic juice that helps to digest carbohydrates, proteins and fats. The pancreatic juice converts carbohydrates into simple sugars and glucose, proteins into amino acids, and the lipids into fatty acids and glycerol. Trypsin and chymotrypsin help in the digestion of proteins.

For a moving solid body, there are two principal types of friction that act upon it:

• The force resisting the motion of a rolling body on a surface is known as rolling friction or rolling resistance. Rolling of ball or wheel on the ground is an example of Rolling friction. 
• The other type of friction is sliding friction. In this type of friction, there is a restriction on the body’s movement as only one side of the body is in contact with the surface. Pushing a box across the table is an example of Sliding friction. 

"Yesterday a seminar organized a seminar on the use of the chemical in vegetables in GTB  School, Shalimar Bagh.

The seminar was attended by people from consumer forum, teachers and other people from the related field.

In the seminar, there was an illustration of how the use of chemicals is disturbing the health of the people who are consuming vegetables which have been chemically treated.

The figures are bothering and disturbing, overuse of chemicals is proving to be hazardous for individuals. "

Abanindranath Tagore

Bharat Mata is a work painted by the Indian painter Abanindranath Tagore in 1905.

(i) Nazi propaganda effectively created a hatred for Jews through language and media with care. The Nazis coined deceptive terms to describe their various killing practices against Jews.

(ii) Mass killings were termed special treatment, final solution (for the Jews), euthanasia (for the disabled), selection and disinfections, and evacuation (deporting people to gas chambers).

(iii) The gas chambers where Jews were killed were called ‘disinfection-areas’.

(iv) Media was carefully used to popularise Nazi ideas through visual images, films, radio, posters, catchy slogans and leaflets.

(v) In posters, Jews were projected as the ‘enemies’ of Germans. They were stereotyped, mocked, abused and described as evil.

(vi) Socialists and liberals were shown as weak, degenerate and malicious foreign agents.

(vii) Propaganda films such as The Eternal Jew were made to create hatred for Jews.

Types of Triangles Based on Sides

According to the lengths of their sides, triangles can be classified into three types which are:

1. Scalene
2. Isosceles
3. Equilateral

If all three sides have the same length then it is an EQUILATERAL triangle, if only two sides have the same length then it is an ISOSCELES triangle and if there are no sides that have the same length then it is a SCALENE triangle.

The given statement is false. This is because Statistics deals with both quantitative data as well as with qualitative data. Statistics not only reveals quantitative information but also reflects the qualitative aspect of data like better, worse off, highly skilled, etc.

pt, patient, a medical abbreviation. Physical therapy/Physiotherapy or Physical therapist/Physiotherapist.

Mail Merge is a useful tool that allows you to produce multiple letters, labels, envelopes by linking a main (common) document to a set of data or data source. The main document is linked to the data source by common fields of data, called merge fields.

Gamma-ray bursts , or GRBs , are flashes of gamma radiation related to extreme energetic explosions detected in very distant galaxies. GRBs are the brightest electromagnetic events known to occur in the Universe. These GRBs can range from ten milliseconds to several minutes.

Mensuration is a branch of mathematics which mainly deals with the study of different kinds of Geometrical shapes along with its area, length, volume and perimeters. It is completely based on the application of both algebraic equations and geometric calculations. The results obtained by the Mensuration are considered very accurate. 

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