Directions: Read the following passage carefully and choose the best answer to each question out of the four alternatives.

The most logical and intelligent people seem to go berserk when talking about snakes. Recently a reputed scientist said with a wise look in his eyes that sand boas have two heads. The other day someone walked into my office and stated that in his village at least cobras mate with rat snakes. About other places he was not sure, he added modestly, but that was how it was in his village.

These stories about snakes are myths. Sand boas have only one head; vine snakes do not peck your eyes out; no snake will drink milk. But it is interesting to try and trace the origin of these untruths. The one about the sand boas two heads obviously exists because the short, stumpy tail of this snake looks remarkably like the head, an effective device to fool predators. Or take the one about vine snakes pecking at eyes. It was ‘probably started by a vine snake that had a bad aim, as snakes, when provoked, will bite the most prominent projection of the offender, which is usually the nose.

But the most interesting one is about snakes coming to the scene of killing to take revenge. It so happens that when injured or under stress, a snake exudes, a large quantity of musk. Musk is a powerful sex attractant, the snakes’ equivalent of after-shave lotion. So after a snake is killed, the ground around still has this smell and naturally a snake of the same species passing by will lick its lips and come to investigate. The killer of the snake, who is probably worried if the pooja he performed was adequate to liquidate the killing of a snake, sees the second snake and is convinced that it was not.

The Irula tribals have a good answer to the query about whether cobras have jewels in their heads; “If they did, we wouldn’t be snake catchers, we would be rajas!”

Irula tribals are

Read the following passage carefully and answer the questions given below it. Certain words have been highlighted for your attention.

Most people spend (on average) half of their day tapping away at their hand-held devices. Either, surfing the net or checking notifications. Facebook ranks the highest in all social networking platforms, followed by Twitter, Instagram and so forth.

Social media is addictive- which is why so many people are 'hooked'. Often referred to as Social networking addiction, this phrase is often used to describe someone who spends too much time on Facebook, Twitter, Instagram and other channels. A blog post, Instagram post, tweet, or youtube video can be produced easily by anyone and shared, which can then be viewed by millions for free. Psychologists and scientists have now taken the time to study social media in terms of why they believe it interferes with aspects of our daily life. There is no official medical term that identifies addiction and social networking. It cannot be deemed as a disease or disorder as the cases are not severe and the habit can easily be maintained or prevented. Furthermore, instead of spending long periods of time on social media, we dip into and out of these sites all day long. We check for updates from friends and family as well as news and information. However, the behavior associated with the excessive use of these channels has become the subject of much public and sociological debate. We actively post, like, comment and share personal posts. Not only that, we tend to share and reshare expressions (of either negative or positive) contagiously. But, why?

Scientists believed some years ago that, dopamine was simply a pleasure chemical in the brain. Recent studies have shown that; dopamine actually produces the desire in people to 'want' by drawing out the need for us to -seek and search. Creating the ultimate drive to find what is that what we want.

Dopamine is spontaneous. It’s stimulated by unpredictability and small bits of information as well as reward cues which are the same conditions that social media presents to all users. In addition, the pull of dopamine is so strong that recent studies have shown that tweeting, for example, can be harder to resist than cigarettes and alcohol!

Researchers at Chicago University studied the effects of social media. They concluded quite quickly that people presented higher levels of addiction to social media than the need to smoke or drink. Media cravings ranked higher.

And, let’s not forget oxytocin, many call it the cuddle chemical because the brain releases pleasure chemicals that transpire usually when you kiss and hug- or tweet. It is also known as the hormone that builds the strong yet unique bond between mothers and their babies. Oxytocin is now regarded as the human stimulant of empathy, generosity, trust, and more. These are factors which many advertisers and marketers play on when promoting a brand or business over social media.

Nevertheless, problems have arisen most commonly with school kids - whereby mobile phone devices have been confiscated because exam results have fallen severely due to lack of attention on homework or studies. Schools in many westernized countries have had to take drastic action - banning smartphones, iPad and most portable devices from school premises- as it is claimed to be a huge distraction. Whereas, other schools use it for educational purposes and as a rewards system for their pupils.

Research has also indicated unsurprisingly that Facebook is the most common activity that university students switch to, when studying. Worryingly, it has also found that those who most engage in this type of internet browsing tend to have lower levels of educational achievement.

Also, there have been many cases of students posting or sharing content that is unethical, which has caused parents and academic institutions to limit the use of these online networking channels.

What stands true about Dopamine in the present scenario?

You have brief passages with 10 questions following each passage. Read the passages carefully and choose the best answer to each question out of the four alternatives

There is a general consensus that ‘International Understanding’ need to be taught as a separate subject at the school stage as that would add to the curricular load which is already too heavy. Instead it should be woven into the curriculum and the numerous opportunities that present themselves while teaching normal school subjects may be intelligently and imaginatively used by the teacher to promote International Understanding.

The school subjects which can be most profitably used for this purpose are History, Geography, Civics, Economics, Sociology, Political Science, Social Sciences, Languages as well as Physical and Life Sciences. However, at the higher education level, international education can be prescribed as a separate subject of study. In fact, the present situation in India broadly conforms to this consensus so far as the school stage is concerned.

At the under-graduate and the post-graduate levels, courses of study in subjects like History, Geography, Economics, Political Science, International Relations, International Law and International Organization have been prescribed by most of the universities and these contain content which has a direct or indirect bearing on promoting UNESCO ideals

On reading Para 1, it can be inferred that

Read the passage given below and answer the questions that follow.

It is well accorded that COVID-19 extracts a huge toll on the mental health of patients and leaves behind a slew of neurological sequelae in its wake. However, what is alarming is the wide gamut of mental and neurological disorders seen even in those with milder symptoms. Such patients frequently reported being anxious, depressed and having difficulty in sleeping. A higher incidence of frank psychosis manifesting as disorganization of thought processes and personality disorders was also reported. Many survivors of COVID19 had to battle substance abuse in its immediate aftermath. There was a steep increase in the amount of alcohol consumed by regular drinkers. Persons who had stopped smoking and consuming alcohol resumed their habit in disconcerting numbers.

The occurrence of neurodegenerative disorders like Parkinsonism is concerning as this would bring longterm disability in the form of impaired mobility and memory decline. It has been hypothesized that the causative mechanism for many of the neurological conditions due to COVID-19 may be the direct invasion of the nervous system by the virus, an increased tendency to blood clotting or an exaggerated immune response by the body. Various other factors like pre-existing psychiatric illness, prolonged quarantine, perceived lack of organizational support, and social stigma are risk factors. Anxiety, Nervousness, and Posttraumatic stress disorder are often fuelled by fear of infecting other family members, physical distancing, loneliness, and ________ at home in cramped quarters.

The pandemic has radically transformed the way businesses function and services delivered. Remote working disrupts a healthy-work life balance. Face to face contact and human interactions which were considered so essential for emotional well-being has taken a backseat. Lack of comforting physical contact like shaking hands and hugging friends is stressful and disconcerting. Online classes and home-schooling have placed a gargantuan burden both on students and parents. Lack of access to reliable computer hardware and spotty internet connections, particularly in rural areas and in the economically backward have created a new class divide. Children have been deprived of co-curricular activities, participation in group events and sports which is essential for their holistic development. Mental stress and fatigue have increased manyfold due to the rigours imposed by virtual learning.

What is the hypothesis behind the many neurological conditions arising due to COVID-19?

Comprehension: Read the following passage and answer the questions given after it.

Since September, at least 25 people have died and thousands have been made homeless. Every state and territory in Australia has experienced fires this summer. But the biggest fires burn along stretches of the eastern and southern coast, where most of the population lives. This includes areas around Sydney and Adelaide. More than 6.3 million hectares (63,000 sq km or 15.6 million acres) have been burned so far – one hectare is roughly the size of a sports field. To put that in perspective, around 800,000 hectares were engulfed in a bush fire in 2018 in California. Australia has always experienced bushfires – it has a "fire season". But this year they are a lot worse than normal.

Fires are usually caused by lightning strikes or accidentally by a spark – but some fires are also started deliberately. This year, a natural weather phenomenon known as the ‘Indian Ocean Dipole’ has meant a hot, dry spell across the country. This year, Australia twice set a new temperature record: an average maximum of 41.9°C was recorded on 18 December. That comes on top of a long period of drought.

Scientists have long warned that this hotter, drier climate will contribute to fires becoming more frequent and more intense. The more extreme weather patterns and higher temperatures increase the risk of bushfires and allow them to spread faster and wider. Fire fighters are spraying water and fire retardant from planes and helicopters as well as from the ground. But fighting bush fires is extremely difficult and often authorities have to focus on just stopping the spread, rather than putting the fire out. The spread can for instance be best contained by digging earth boundaries to stop the flames from spreading. The priority is saving lives.

Professional fire fighters are the first in line to battle the flames, but they are outnumbered by the thousands of volunteers. Three of them have died. There's also help coming from abroad: the US, Canada and New Zealand have sent fire fighters to help. Australia's police, military and navy are involved in rescue and evacuation efforts. While people can flee the fires and are being evacuated if need be, the flames are devastating wildlife in the affected areas. One study estimated that half a billion animals have died in New South Wales alone.

Zookeepers take animals home to save them from fire, but the fires don't only kill animals directly, they also destroy the habitat, leaving the survivors vulnerable even when the fires have gone. So the true scale of loss isn't yet clear. Experts say more than 100,000 cows and sheep may also have been lost, which is devastating for farmers.

Each state runs its own emergency operation, but Prime Minister Scott Morrison has promised better funding for fire-fighting and payouts for volunteer fire fighters, and an additional A$2billion ($1.4billion; £1billion) for the recovery. But the national government has come under strong criticism from its opponents that it has not been doing enough against climate change. The country is one of the world's biggest per capita greenhouse gas emitters but under international agreements it has committed itself to reduction targets

The spread of fire can be contained effectively by:

Directions: In the following passage, some of the words have been left out, each of which is indicated by a number. Find the suitable word from the options given against each number and fill up the blanks with appropriate words to make the paragraph meaningfully complete. Stanford economist Nicholas Bloom is a true believer, and like many true believers, he lets his message __(A) __ his evidence. Based on a single study of a Chinese travel agency, he __(B) __ declares working from home a “future-looking technology” with “enormous potential.”Not so fast.

Bloom’s study comes with serious limitations and is contradicted by a later Gallup report. However, while it is far too soon to draw broad __(C) __ from his findings, savvy business leaders can read between the lines and extract some valuable lessons for working ___(D) ___ with all employees. Bloom __(E) __ on China’s biggest travel agency, Ctrip, which wanted to expand while controlling office space costs. They __(F) __ a remote work trial, expecting that productivity would slip a little, but not enough to cancel out the savings. Instead, productivity shot up 13%, and attrition dropped 50%. When the work-from-home option was rolled out to the entire company and employees were given a choice, the productivity gains were 22%.

Question E

Comprehension: Read the following passage and answer the questions given after it.

Since September, at least 25 people have died and thousands have been made homeless. Every state and territory in Australia has experienced fires this summer. But the biggest fires burn along stretches of the eastern and southern coast, where most of the population lives. This includes areas around Sydney and Adelaide. More than 6.3 million hectares (63,000 sq km or 15.6 million acres) have been burned so far – one hectare is roughly the size of a sports field. To put that in perspective, around 800,000 hectares were engulfed in a bush fire in 2018 in California. Australia has always experienced bushfires – it has a "fire season". But this year they are a lot worse than normal.

Fires are usually caused by lightning strikes or accidentally by a spark – but some fires are also started deliberately. This year, a natural weather phenomenon known as the ‘Indian Ocean Dipole’ has meant a hot, dry spell across the country. This year, Australia twice set a new temperature record: an average maximum of 41.9°C was recorded on 18 December. That comes on top of a long period of drought.

Scientists have long warned that this hotter, drier climate will contribute to fires becoming more frequent and more intense. The more extreme weather patterns and higher temperatures increase the risk of bushfires and allow them to spread faster and wider. Fire fighters are spraying water and fire retardant from planes and helicopters as well as from the ground. But fighting bush fires is extremely difficult and often authorities have to focus on just stopping the spread, rather than putting the fire out. The spread can for instance be best contained by digging earth boundaries to stop the flames from spreading. The priority is saving lives.

Professional fire fighters are the first in line to battle the flames, but they are outnumbered by the thousands of volunteers. Three of them have died. There's also help coming from abroad: the US, Canada and New Zealand have sent fire fighters to help. Australia's police, military and navy are involved in rescue and evacuation efforts. While people can flee the fires and are being evacuated if need be, the flames are devastating wildlife in the affected areas. One study estimated that half a billion animals have died in New South Wales alone.

Zookeepers take animals home to save them from fire, but the fires don't only kill animals directly, they also destroy the habitat, leaving the survivors vulnerable even when the fires have gone. So the true scale of loss isn't yet clear. Experts say more than 100,000 cows and sheep may also have been lost, which is devastating for farmers.

Each state runs its own emergency operation, but Prime Minister Scott Morrison has promised better funding for fire-fighting and payouts for volunteer fire fighters, and an additional A$2billion ($1.4billion; £1billion) for the recovery. But the national government has come under strong criticism from its opponents that it has not been doing enough against climate change. The country is one of the world's biggest per capita greenhouse gas emitters but under international agreements it has committed itself to reduction targets

Which statement is NOT true according to the passage?

Comprehension: In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
 Ants, like most insects, have (1) ______ are known as compound eyes. This means their eyes have multiple lenses, (2) ______ in general, most species of ant do not have particularly great eyes for seeing (3) ______ far. Ants can detect movement and see the areas around them, but (4) ______ more on senses and information they get from their legs and antennae (5) ______ from their eyes.

Select the most appropriate option to fill in blank number 1.