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A press conference is an event organized to officially distribute information and answer questions from the media. Press conferences are held by corporations and other businesses, politicians and other government officials.

(a) Cable Television

E-mall are the examples of personal communication.

The fundamental objectives of media are to serve the people with news, comments and information on matters of public interest in a fair, accurate, unbiased and decent manner and language.

Ethics is a code of values which govern our lives. So they are very essential loi moral and healthy life.

Media is considered as the best source to know about the happenings of world. Newspaper, magazine, radio, television and internet are the different types of media. It greatly affects our lives because media has the power to influence out thoughts. This influence is sometimes positive and sometimes negative

The four pillars of democracy are Legislature, Executive, Judiciary, and Media.

1. Media is very powerful entity on the earth.

2. it is a mirror which shows various social, political and economic activities around us.

3. Media keeps the people awakened and it has become one of the major instruments of social change.

4. It also advertises the various products produced by the private companies.

5. It creates the awareness. 

6. Media provide a balanced report on any matters. 

7. It fights against the sociopolitical evils and injustice in our society while bringing empowerment to the masses and facilitating development.

(a) The Ursa Major

Communication can be classified into:

• Personal communication – these are meant for personal use, like letters, telephone, cell phone, E-mail and fax.
• Mass communication – these are used for communicating with the masses. Newspapers, Radio, TV, Collectively they are termed as media.

Correct answer is (c) 27

Mercury and Venus  planets never appear in the mid - night sky.

The word cresent  refers to the phases where the Moon is less then half illuminated.

(b) hydrogen and helium

1. Older stars : elliptical galaxies :: younger stars : Irregular galaxies.

2. Nearest galaxy: Andromeda :: Nearest star : Alpha Centauri.

(d) spiral galaxy

Jupiter and Saturn.

Milky way  is the galaxy where we live.

Pole star is appears to be stationary in the night sky.

Milky way  is the galaxy where we live.

Moon changes its shape daily because, it revolves around the Earth and the light from the Sun continuously changes due to the presence of Earth between Moon and the Sun.

Yes, as the Moon revolves around the Earth facing one part of the Moon towards the Earth, then we never see back side of the Moon from the Earth.

Laghu Saptarishi.

Sun will be at position R.

1. All the galaxies were appearing to move away from us. Further, farther they are faster they appear to move. 

2. Cosmologists, scientists who study the structure and evolution of universe that is cosmos, reason that this imply at one point of time in the past all matter was confined in a single point and since then it has started to expand.

3. The event when the matter confined in a single point and began to expand is called ‘big bang’. 

4. This is considered as the origin of our universe as we know it. 

5. The Big Bang Theory is the prevailing model of the evolution of the Universe. 

6. Under this theory, space and time emerged together about 14 billions of years ago. 

7. At that time, the entire Universe was inside a bubble that was thousands of times smaller than a pinhead. 

8. It was hotter and denser than anything we can imagine. 

9. Then it suddenly expanded. The present Universe emerged. 

10. Time, space and matter all began with the Big Bang.

No. Stars emit light all the time. But we are not able to see their light due to excess brightness of the Sun.

1. Calcium 

2. Honey 

3. Bacillus anthracis 

4. Silk 

5. 1992

1. We must love and protect animals.

2. We should safeguard them and treat them with care.

1. True

2. True

3. (False) 

Correct statement: Sill is the fibre derived from the silk worm.

4. (False) 

Correct statement: Ahimsa silk is otherwise known as peace silk.

5. True

The correct answer is: (a) J.J. Thomson

(i). Chadwick discovered ‘neutron’. 

(ii). Thomson discovered ‘electron’. 

(iii). Goldstein discovered ‘proton’.

Kusuma Rajaiah, a Government officer from Andhra Pradesh proposed Ahimsa way of silk production for the making silks without killing the silkworms.

Correct answer is (a) Protein

1. Silk has natural beauty and elegance.

2. It gives comfort in warm weather and warmth during colder months. 

3. It is used in the manufacture of classical and high fashion clothes, modern dresses particularly silk sarees, the elegant of beautiful dresses. 

4. It is also used in household for making wall hangings, curtains, rugs and carpets. 

5. It is also being used in the manufacture of surgical threads for sutures.

1. Wool – silk fibre is obtained from the cocoon of silkworm. 

2. Wool is got from fleece of sheep or goat

(d) Sericulture

1. iv 

2. iii 

3. v 

4. i 

5. ii

1. Generally, the workers in silk industry affected with arthritis is they stand for a long time reeling the silk into yarn. 

2. They also develop back pain and visionary problem and skin injuries. 

3. Some time they may suffer from respiratory problem like asthma and bronchitis due to poor ventilated area of their work.

One possible step can be taken to reduce tax on medicine (or alternatively give subsidy). This will bring down cost and in turn “increase” supply. Demand remaining unchanged, a situation of “excess supply” will emerge which will lead to competition between sellers. This will lead to fall in price of the medicine.

1. It is also known as Peace silk. 

2. In 1992, Kusuma Rajaiah, a Government officer from Andhra Pradesh state of India proposed ahimsa way of silk production for the making silks without killing the silkworm. 

3. It involves a humane method specifically letting the worms to hatch and then using the vacant cocoons.

4. Traditional silk manufacturing methods involve boiling the cocoons of the silk worms and then sorting out the threads, which is used later in silk production. 

5. It has been supported by many people who are interested in the welfare of animals.

1. silk 

2. Layers 

3. worker 

4. silk moth 

5. vaccination

(a) Both Assertion and reasoning is correct

1. Honey has high levels of sugar.

2. It has antiseptic and antibacterial properties. 

3. It can prevent cancer, heart diseases reduce ullcer and digestive problems. 

4. It also soothes coughs and sore throats. 

5. Hence it is recommended for all.

Correct answer is (c) second

1. cocoons 

2. sericulture 

3. mulberry leaves 

4. caterpilla 

5. carding

Correct answer is (b) fibres

1. Sufficient space 

2. Plenty of water 

3. Proper ventilation 

4. Regular feed rich in proteins, fats and vitamins.

(a) atomic numbers

The speaker suggests to come into the contact of nature and admire its beauty by referring to the owner of the woods. He means to say that human being should love nature and always live in the contact of it.

वक्ता जंगल के मालिक को प्रस्तुत करके प्रकृति के सम्पर्क में आने की सलाह देता है तथा इसकी सुन्दरता को निहारने की सलाह देता है। उसके कहने का आशय है कि मानव को प्रकृति से प्रेम करना चाहिए। तथा सदैव उसके सम्पर्क में रहना चाहिए।