Questions

Q:

Which generation of computer is still under development?

A) 5th B) 4th
C) 3rd D) 2nd
 
Answer & Explanation Answer: A) 5th

Explanation:

5th generation of computers are still under development depending on the artificial intelligence.

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Q:

Which of the following is a function of Earth's atmosphere?

A) supplies the oxygen and water for life B) screens out much of the Sun's ultraviolet radiation
C) insulates the surface against temperature extremes D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Here all the options given are important functions of Earth's atmosphere.

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Q:

A subquery in an sql select statement.

Answer

A Subquery or Inner query or a Nested query is a query within another SQL query and embedded within the WHERE clause.


Subqueries are most frequently used with the SELECT statement. The basic syntax is as follows::


SELECT column_name [, column_name ]
FROM table1 [, table2 ]
WHERE column_name OPERATOR
(SELECT column_name [, column_name ]
FROM table1 [, table2 ]
[WHERE])



A subquery is used to return data that will be used in the main query as a condition to further restrict the data to be retrieved.


Subqueries can be used with the SELECT, INSERT, UPDATE, and DELETE statements along with the operators like =, <, >, >=, <=, IN, BETWEEN, etc.


 


There are a few rules that subqueries must follow −


 


1. Subqueries must be enclosed within parentheses.


2. A subquery can have only one column in the SELECT clause, unless multiple columns are in the main query for the subquery to compare its selected columns.


3. An ORDER BY command cannot be used in a subquery, although the main query can use an ORDER BY. The GROUP BY command can be used to perform the same function as the ORDER BY in a subquery.


4. Subqueries that return more than one row can only be used with multiple value operators such as the IN operator.


5. The SELECT list cannot include any references to values that evaluate to a BLOB, ARRAY, CLOB, or NCLOB.


6. A subquery cannot be immediately enclosed in a set function.


7. The BETWEEN operator cannot be used with a subquery. However, the BETWEEN operator can be used within the subquery.

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Q:

The International Court of justice is located at

A) Geneva B) Hague
C) Amesterdam D) Vienna
 
Answer & Explanation Answer: B) Hague

Explanation:
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Q:

Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it.

Reporters and city officials gathered at a Chicago railroad station one afternoon in 1953. The person they were meeting was the 1952 Nobel Peace Prize winner. A few minutes after the train came to a stop, a giant of a man - six feet four inches - with bushy hair and a large moustache stepped out from the train. Cameras flashed. City officials approached him with hands outstretched. Various people began telling him how honoured they were to meet him.

The man politely thanked them and then, looking over their heads, asked if he could be excused for a moment. He quickly walked through the crowd until he reached the side of an elderly black woman who was struggling with two large suitcases. He picked up the bags with a smile, escorted the woman to a bus. After helping her aboard, he wished her a safe journey. As he returned to the greeting party he apologized, "Sorry to have kept you waiting." Not many whites would have done what he did.

The man was Dr. Albert Schweitzer, the famous missionary doctor who had spent his life helping the poor in Africa. In response to Dr. Schweitzer's action, one member of the reception committee said with great admiration to the reporter standing next to him, "That's the first time I ever saw a sermon walking."


Dr. Albert preferred to let his actions _____ .

A) speak louder than his words B) be admired
C) be advertised D) be written about
 
Answer & Explanation Answer: A) speak louder than his words

Explanation:
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Q:

Read the passage carefully and select the best answer to each question out of the given four alternatives.


The Amazon basin has been continuously inhabited for at least 10, 000 years, possibly more. Its earliest inhabitants were stone-age peoples, living in hundreds of far-flung tribes, some tiny, others numbering in the tens of thousands. It was from the west that Europeans explorers first arrived. In 1541 a Spanish expedition from Quito, led by Gonzalo Pizarro, ran short of supplies while exploring east of the Andes in what is today Peru. Pizarro’s cousin Francisco de Orellana offered to take 60 men along with the boats from the expedition and forage for supplies. De Orellana floated down the Rio Napo to its confluence with the Amazon, near Iquitos (Peru), and then to the mouth of the Amazon. Along the way his expedition suffered numerous attacks by Indians; some of the Indian warriors, they reported, were female, like the Amazons of Greek mythology, and thus the world’s greatest river got its name. No one made a serious effort to claim this sweaty territory, however, until the Portuguese built a fort near the mouth of the river at Belém in 1616, and sent Pedro Teixeira up the river to Quito and back between 1637 and 1639. During the 17th and 18th centuries, Portuguese bandeirantes (groups of roaming adventurers) penetrated ever further into the rain forest in pursuit of gold and Indian slaves, exploring as far as present-day Rondônia, and the Guaporé and Madeira river valleys. Amazonian Indians had long used the sap from rubber trees to make waterproof bags and other items. European explorers recognized the potential value of natural latex, but were unable to market it because it tended to grow soft in the heat, or brittle in the cold, and thus had limited appeal outside the rain forest. However, in 1842 American Charles Goodyear developed vulcanization (made natural rubber durable) and in 1890 Ireland’s John Dunlop patented pneumatic rubber tires. Soon there was an unquenchable demand for rubber in the recently industrialized USA and Europe, and the price of rubber on international markets soared. As profits skyrocketed, so did exploitation of the seringueiros, or rubber tappers, who were lured into the Amazon, mostly from the drought-stricken northeast, by the promise of prosperity only to be locked into a cruel system of virtual slavery dominated by seringalistas (owners of rubber-bearing forests). Rigged scales, hired guns, widespread illiteracy among the rubber tappers, and monopoly of sales and purchases all combined to perpetuate the workers’ debt and misery. In addition, seringueiros had to contend with jungle fevers, Indian attacks and all manner of deprivation.


Where did De Orellano float down to for its confluence with the Amazon?

A) Belem B) Quito
C) Rio Napo D) Peru
 
Answer & Explanation Answer: C) Rio Napo

Explanation:
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Q:

Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it.


Without breakfast, all of us ­ irrespective of age ­ are likely to experience the late morning slump; tiredness, sleepiness and the urge to sit back. Our efficiency goes down further as the day progresses.Moreover, skipping the first meal of the day leads to intense hunger pangs by late morning and we end up eating chips, samosas, burgers or other high­ fat unhealthy foods. Break fast­skippers are more likely to be overweight. A good breakfast leads to a more active, productive day. Research has found a definite connection between skipping breakfast and memory impairment in both young and older adults. Moreover, breakfast is directly linked with performance in school and college. Breakfast should contribute at least one ­fourth of our daily requirement of nutrients. An ideal breakfast should contain adequate amounts of carbohydrates, proteins and fats in addition to minerals and vitamins. Essentially this means including most of our food groups in the morning meal. Whole grain cereals ­ like atta in parathas and puris, dalia, suji, etc. are an integral part of the traditional Indian breakfast. Their high fibre and protein content provides a feeling of satisfaction, which lowers the urge to snack before lunch. On the other hand, high­ sugar foods actually make people sleepier, not active.

Milk, cheese, eggs or dals (as sprouts in idli or dosas or as sambhar) are other protein sources. A serving of milk (one cup) provides B­ complex vitamins and also minerals like zinc, magnesium and calcium. Fruits or vegetables provide valuable vitamin C and keep constipation away.

 

A good breakfast

A) keeps you active B) causes memory loss
C) boosts performance D) keeps you active; boosts performance
 
Answer & Explanation Answer: D) keeps you active; boosts performance

Explanation:
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Q:

Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it.

 

To know language is to be able to speak it; even a child who does not yet attend school can speak his or her language. In order to speak a language it is important to listen to it and to read a few pages in it everyday. A child picks up language and learns to talk just as (s)he learns to walk. Walking and talking comes naturally to a child as it grows. In our country, a child may grow up speaking more than one language, if these languages are spoken in the home and in the neighbourhood. we call this multilingualism. A child speaks a language or languages much before (s)he starts going to school. To know a language then is first of all to be able to speak it as easily and naturally as a tree year old child does. Later on the child will learn to read and write in that language. In order to read and write in a language, one has to speak it. But it is possible to speak a language but not able to read or write in it. A baby does not speak until it is nine months old but it understands a few words at six months of age. It has been listening ever since it was born, and even a little before that. So the first strategy in speaking a language is to listen.

 

A child has been __________ ever since it was born

A) speaking B) reading
C) walking D) listening
 
Answer & Explanation Answer: D) listening

Explanation:
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