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Thursday 9 June 2022

Unit 1: Real And Complex Numbers - Mathematics For Class IX (Science Group) - Solved Exercise 1.2 - By Miss Aira Shakir

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Unit 1: Real And Complex Numbers
Exercise 1.2

By Miss Aira Shakir
1. Recognize the properties of real numbers used in the following:


2. Fill the correct real number in the following to make the real numbers property correct.


3. Fill in the blanks to make the property correct/true.
(i) 5 < 8 and 8 < 10 ⇒ 5 < 10
(ii) 10 > 8 and 8 > 5 ⇒ 10 > 5 (OR 5 < 10)
(iii) 3 < 6 ⇒ 3 + 9 < 6 + 9
(iv) 4 < 6 ⇒ 4 + 8 < 6 + 8
(v) 8 > 6 ⇒ 6 + 8 > 6 + 6

4. Fill the following blanks which make property correct/true:
(i) 5 < 7 ⇒ 5 x 12 < 7 x 12
(ii) 7 > 5 ⇒ 7 x 12 > 5 x 12
(iii) 6 > 4 ⇒ 6 x (-7)  < x 4 x (-7)
(iv) 2 < 8 ⇒ 2 x (-4)  8 x (-4)

5. Find the additive and multiplicative inverse of the following real numbers.



Wednesday 1 June 2022

ESSAY : Importance of forest - By USTANI G COACHING CENTRE (Class IX – X – XI – XII) (For 2022)

Importance of forest

By USTANI G COACHING CENTRE

Forests are the best gift of nature provided to mankind. It provides space for living to many of the living organisms. Apart from this, we are availing a lot of benefits from the forests. Forests constitute different kinds of herbs, shrubs as well as trees. Many of them constitute to provide medicinal value.

We obtain a variety of timber products from our forests. Moreover, they are helpful in removing the pollutants in the air, thus helping in the reduction of air pollution.

So, the importance of forests are enlisted below:
  • Provide shelter and shade.
  • Provides air, food, fruits, timber and water, and medicine.
  • Act as a natural atmospheric purifier.
  • Helps in managing climate, soil erosion, and controlling noise pollution.
  • Helps in sustainability by managing biodiversity.
  • Provide people with employment benefits.
  • An important aspect of the environment, a reservoir of greenhouse gases.
  • Aesthetic value.

Conclusion:
Forests are sole providers of various benefits to mankind. Therefore it is our responsibility to help in the reduction of activities which are leading to a reduction in the forest land. Since it provides us with different services and on the other hand we are benefited too, then why are we forgetting our role in the protection of forests!



ESSAY : A terrible road accident - By USTANI G COACHING CENTRE (Class IX – X – XI – XII) (For 2022)

A terrible road accident

By USTANI G COACHING CENTRE

“Be Alert, Accident hurt.”
(Charles Lamb)

Life is not a bed of roses, its a bed of thorns. Many accidents take place in routine life. A road accident refers to an accident involving at least one road vehicle, occurring on a road open to public circulation, and in which one person is injured or killed.

On this busy planet, life has become very active and fast. People have to travel for various purposes. They use different vehicles to move from one place to another. Most of the people on the roads seem to be in such a hurry that they don’t bother to follow the traffic rules. Some of them even are unaware of the rules they should abide by on the roads. This negligence results in severe road accidents. These accidents can be fatal; if the victims are lucky enough to survive from them, they may live their entire life with the disability or at least suffering from a serious injury.

“Road sense is the offspring of courtesy and the parent of safety.”
(Australian Traffic)

There are many other causes of road accidents. Most accidents are due to rash driving. Between speeding buses, motor-bikes, cars etc. in an uncontrollable urge to prove oneself as the ruler of the road, is the frequent cause of road accidents. Many road mishaps happen when the driver’s attention is divided between the person on the other side of the phone and the vehicles on the road. In spite of multiple warnings by the officials, people don’t restrain from using mobile phones and cause accidents.

“Accidents, and particularly street and highway accidents, do not happen they are caused.”
(Ernest Greenwood)

The accident which I am going to narrate is very horrible. It was actually a road accident which I myself, experienced. It was just a rainy day and the start of another routine morning. l took a shower, called my friend to pick me from my home. All of this took a little longer than usual, not a surprise, so we were running late. My friend, Ali, was driving fast in an attempt to reach college in time.

“Chance takers are accident makers.”
(Rick Allen)

We started down the first road to our destination. This road is about three miles long and filled with little hills. Unfortunately, there was lying a dead deer on the road. Our car struck it and went out of control.

“Know safety, no injury. No safety, know injury.”
(Horace)

Suddenly, it hit a tree on the side of the driving seat. The car was stopped with a bulging sound. I got a slight injury on my head. I was terrified but I realized that God saved me from severe damage. I looked at my friend. His condition was very critical. I was calling him but he was unconscious. I was so confused that I did not know what to do to save him. I came out of the ear to seek help. Two to three people gathered there. One of them called the emergency number “1122” for the ambulance-immediately. The ambulance arrived very quickly. After about 15 minutes in the ambulance, we got to the hospital. We took him to the X-ray room and got X-rays of his arm and leg. They found out that his forearm bone was broken in his left arm. Besides this, his hip bone was severely affected. He was taken to Civil Hospital for surgery. A plate was put on his hipbones to help them stay together. He was in the hospital for six days and in a wheelchair for around eight weeks.

“When you. gamble with safety, you bet your life.”
(Charles Dickens)

Thanks to Allah for saving our lives. We have now realized how precious life really is and that it can be taken away in a single minute. This is even easier when you are driving a car. One little mishap can result in an extreme injury or even death. We were lucky that we received immediate help, otherwise, things might have become worse. From this incident, I have learned a great lesson that we should follow traffic rules and avoid rash driving.

“Prepare and prevent, don’t repair and repent.”
(A.A Milne)



ESSAY: Blessings of Childhood - By USTANI G COACHING CENTRE (Class IX – X – XI – XII) (For 2022)

Blessings of Childhood

By USTANI G COACHING CENTRE

Childhood is the most important and unique time of life. A family is defined as the place where the kid is born first. The love and care of family members is the most key factor in making childhood so unforgettable. A child has the purest heart. Any human being can have a heart, and no matter what, all that heart craves is love.

The most important thing we need to remember in life is that our parents are our first mentors. Childhood revealed many other lessons to us that we need to understand and follow the example for the rest of our lives. This time period provides a youngster with several opportunities to learn from and correct his or her mistakes.

When a child inculcates good habits, he or she will follow the same throughout life. Childhood is when a child gets a lot of space and time to build all types of his or her skills and abilities. All thoughts and acts that a child visualizes and experiences impact the child's future.

From the time he or she Is a student, a youngster should make every effort to develop himself or herself into a remarkable personality. Trying to bend for difficult tasks from an early age will help a child's future development as a master of delicacy.



ESSAY: USES AND ABUSES OF CELLPHONE - By USTANI G COACHING CENTRE (Class IX – X – XI – XII) (For 2022)

USES AND ABUSES OF CELLPHONE

By USTANI G COACHING CENTRE

A mobile phone or cell phone is an electronic telecommunication device with the same basic capability as a conventional fixed-line telephone, but which is also entirely portable and is not required to be connected with a wire to the telephone network. In addition to the standard voice function of a telephone, a mobile phone can support many additional services such as SMS for text messaging, packet switching for access to the Internet, and MMS for sending and receiving photos and videos. In less than twenty years, mobile phones have gone from being rare and expensive pieces of equipment used by businesses to an all pervasive low-cost personal item. In many countries, mobile phones now outnumber landline telephones, with most adults and many children now owning mobile phones.

As with many new technologies, concerns have arisen about the effects on health from using a mobile telephone. There is a small amount of scientific evidence for an increase of certain types of rare tumors (cancer) in long-time, to persistent heavy users. Another controversial but more lethal concern is the correlation with road traffic accidents. Furthermore, students waste a lot of time using mobile phone and making friends which affects their studies badly.

Despite all the abuses of cell phones, one cannot deny the uses of mobiles. They are one's easily available help in case of an emergency. They save a lot of time and energy in making multiple calls to track a single person.

All one has to remember is that mobiles were invented for our convenience and not to create nuisance. If used judiciously, wisely and with public etiquette, mobiles can be of great use. Technology is here and it is here to stay. It is indeed up to us to let it guide our lives or to allow our sense of reason to control the right use of technology.


ESSAY: MERITS AND DEMERITS OF SOCIAL MEDIA -By USTANI G COACHING CENTRE (Class IX – X – XI – XII) (For 2022)

MERITS AND DEMERITS OF SOCIAL MEDIA

By USTANI G COACHING CENTRE

We live in a time when technology has reached such heights that no aspect of life is complete without it. Social networking sites are that innovation of technology that makes this huge world of our look small. In this modern world, social networking sites plays a major role among the youngsters and the population of using these sites grow day by day in a large number. These types of sites mainly offer an online service in which the people can share their views, opinions and other stuffs. Many off these sites contain the messaging facility, which is the main factor that attracts the people towards it. These sites are web based and requires an Internet connection to chat with other around the world.

Some of the social networking sites that are popular in this current scenario include : Facebook, Twitter etc.

These sites generally attract the people by offering various services like Chatting, Gaming, Instant Messaging, Photo sharing, Videos etc.

MERITS:
Beginning with the advantages of the various social networking sites such as Twitter, Facebook, Instagram and various others; these give us a platform to express our thoughts and share it with billions of people out there, know their views and interact with them. Apart from communication between people it also gives us an opportunity to get various information about the people or celebrities we admire.

Social networking sites have been the place to discuss issues that are international, national, local and have time and again attracted attention of concerned authorities which is a great advantage.

It can be used as a platform to promote and advertise business.

DEMERIT:
In the same time, there are lots of security issues faced by them while updating their personal information on these sites. It is advisable not to update the personal information on these sites, as these sites are more hacked by the hackers and sometimes can be dangerous to your life.

Through social networking, person has a lot of friend but the quality and integrity of these friendships is not always true. On the other hand, data on these social-networking sites for a person is not always 100% honest and reliable, and they do not verify personal details (age, location, etc.) of their members.

The amount of time spent by individuals with each other online has risen to greater extent. This has effect on health of individuals, because spending a lot of time browsing these social networks can affect the way the genes operate within the human body, and weakens the immune and hormone levels. In addition, it is also has an impact on mental health. Moreover, the use of social networking in the education can cause lack of motivation towards learning and can be boring sitting in front of computer for a long time.

CONCLUSION: Social network has made the life of people more easy and interesting, its negative impact has created insecurity among them. Everything has some good effects and some bad effects but it fully depends on individual how to utilize good effect and how to convert bad effects into good effects. At last I would like to conclude
“SOCIAL MEDIA SHOULD IMPROVE YOUR LIFE, NOT BECOME YOUR LIFE!”


English I (Compulsory) - For Class XI (Commerce) - Preliminary Examination Paper 2024- By Board Of Time Collegiate

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Class XI (Commerce)
English I (Compulsory)
Preliminary Paper 2024

By Board Of Time Collegiate






Tuesday 31 May 2022

ESSAY : WATER SHORTAGE IN KARACHI / PROBLEMS OF KARACHI CITY - By USTANI G COACHING CENTRE (Class IX – X – XI – XII) (For 2022)

WATER SHORTAGE IN KARACHI /
PROBLEMS OF KARACHI CITY

By USTANI G COACHING CENTRE

Many areas of Karachi are facing an acute water shortage due to slackness of Sindh government and other authorities, compelling citizens to drink bottled and tanker water.

A few years ago, only summer seasons witnessed water shortage in Karachi but now, the citizens have to face water-related crisis in all seasons. Karachi is a mega city of Pakistan which requires more than 1,000 million gallons of water per day for fulfilling the water need of its high population.

The three main reasons of this problem are the rule of tanker mafia, lobbying of mineral water companies and Karachi Water and Sewerage Board.

The role of water tanker mafia in the metropolis nowadays is worse than ever. Many areas of the city depend on the water tankers because they have no supply of water from KWSB. The rule of tanker mafia in Karachi had made the water situation worst.

Secondly, the lobbying of mineral water companies has also made the life of Karachities worst. They first basically targeted the people of elite class and then by soft advertisement goes through the mind of the people of all classes and give them the sense of hygiene water which is of course only the mineral water. The use of mineral water is nowadays a status symbol too but like the water tanker every people of the society can’t afford it.

Last but not the least, poor power supply and water shortage have a major connection with each other. In most of the areas, the water supply timing by KWSB and load-shedding hours are same so people can’t be able to store water.

Water is a basic necessity of life but unfortunately, people of Karachi don’t have full access to it. By going through all the three hurdles in the path of getting water, people end up using unhygienic water on which they have easy access. In Karachi, people usually have the problem of stomach related diseases and this is unfortunately because of no supply of clean drinking water.



ESSAY: STREET CRIMES IN KARACHI - By USTANI G COACHING CENTRE (Class IX – X – XI – XII) (For 2022)

ESSAY: STREET CRIMES IN KARACHI

By USTANI G COACHING CENTRE

Street crimes have unfortunately become a regular feature of all big cities of Pakistan — particularly Karachi. Armed robbery, assault and mugging have become a common feature of metropolitan life in Pakistan. Almost everyone has a story to tell about having a purse or a wallet stolen.

The most common street crime in Pakistan these days is mobile snatching. These robbers come well-armed and well prepared both physically and psychologically to commit crimes. These people overpower the victim by fear and weapons. Youngsters these days are very much in fear about whether to carry a mobile phone or cash while travelling at any time of the day. It is not just night time that is dangerous for them but also day time. Anytime, anyplace and by any means, these culprits get hold of helpless and innocent people walking on the street and rob them of all valuables, cash and mobile phones.

In order to bring an end to this evil, we must educate our society because only the educated and the literate can make up a strong and peaceful nation. We must also build a strong family fabric. Parents should give time to their children and make them aware of the negative effects of these crimes.

Lastly, efforts should be made to strengthen the police structure so that apprehended criminals are tried justly and punished duly. Surveillance cameras should be installed at all street corners to assist the police in catching the culprits. The black sheep within the police force should be detected and serious action should be taken against them.

Essay: PAKISTAN SUPER LEAGUE – SEASON 7 - By USTANI G COACHING CENTRE (Class IX – X – XI – XII) (For 2022)

PAKISTAN SUPER LEAGUE – SEASON 7

By USTANI G COACHING CENTRE

The Pakistan Super League is a professional Twenty 20 cricket league contested during February and March of every year by six teams representing six cities in Pakistan. The league was founded on 9 September 2015 with five teams and now comprises six teams. Instead of operating as an association of independently owned teams, the league is a single entity in which each franchise is owned and controlled by investors.

Each team playing matches in double round robin format; the top four teams with the best record qualify for the playoffs and culminates in the championship game, the PSL Cup Final.

2022 Pakistan Super League (also known as PSL 7 or for sponsorship reasons HBL PSL 2022) is the seventh season of the Pakistan Super League, a franchise Twenty 20 cricket league which was established by the Pakistan Cricket Board (PCB) in 2015. It was played entirely in Hi7 Stadium, Karachi and Gaddafi Stadium, Lahore.

The series started on 27 January 2022 and ended on 27 February 2022.
The six teams that played the series were Karachi Kings, Lahore Qalandar, Multan Sultan, Peshawar Zalmi, Islamabad United and Quetta Gladiators. The final match of PSL-7 was played between Multan Sultans and Lahore Qalandar. Lahore Qalandar won the toss and elected to bat first. They scored 180 runs in 20 overs. Multan Sultan which remained the strongest side in entire tournament could not snatch victory from Lahore Qalandars and the whole team was dismissed after scoring 138 runs. In this manner, Lahore Qalandar won their maiden PSL title.

Muhammad Rizwan (Multan Sultans) was awarded Player of the Series for scoring 546 runs in the tournament. Shaheen Afridi (Lahore Qalandar) remained the leading wicket taker with 20 wickets.