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Question : Who invented the electric motor?
Option 1: Michael Faraday
Option 2: Guglielmo Marconi
Option 3: James Watt
Option 4: Isaac Newton
Correct Answer: Michael Faraday
Solution : The correct option is Michael Faraday.
A device that transforms electrical energy into mechanical energy is an electric motor. In 1821, Michael Faraday created it. Electric motors can be powered by alternating current (AC) sources such as the power grid, inverters, or generators,
Question : Comprehension: Read the passage and answer the questions that follow.
A new and extreme tourist attraction has just exploded onto the scene in Iceland: Volcano Walking. It would appear, according to Trip Advisor, that this is one trip that cannot be missed, despite the extortionate cost.
The idea of making Thrihnukagigur volcano accessible was the brainchild of Ami B. Stefansson, a doctor in Reykjavik and a lifelong cave enthusiast. He has been studying caves in Iceland since 1954 and some would argue that there is no one who has more experience.
Thrihnukagigur has always been special to Stefansson ever since he was the first to descend down to the crater base in 1974. Like most people who experience it, he was utterly spellbound by its uniqueness and beauty and made it his mission to protect and preserve this stunning natural phenomenon. Unlike others who may have only seen the profit that could be made from walking into the mouth of a volcano, Stefansson believed that the primary focus was to treat such a grand natural wonder with the utmost respect, to protect and defend it. The first 'volcano tourists' entered the volcano in 2005 and it has since been labelled as one of the most unique tourist attractions in the world.
Volcano walkers are taken to the mouth of the crater from where they are lowered in a basket into the depths of the earth. People once thought that volcanoes were portals to Hell and associated with death and destruction and yet the entrance to the crater is awe-inspiring and almost ethereal. The vastness of it can feel overwhelming; it is the size of a cathedral and the Statue of Liberty could easily fit into the shaft. After 6 minutes and 120 metres, visitors arrive at the crater base. The ground space is the size of three full-sized basketball courts placed next to each
At the bottom, there is a reverent hush. People whisper in respect to the sleeping giant who has lain dormant for 4,000 years. The subterranean walls are scorched with colours from a divine palette: magenta red, vibrant purple, burnt orange, vivid green and honey yellow. The colour intensifies in certain places where 4000 years ago the magma was pushed out with brutal force. This is Mother Nature's secret place, her private art studio where visitors feel like trespassers. The protruding rock faces show a tapestry of patterns and formations that have been moulded by heat, pressure and time. Floodlights illuminate the walls and draw attention to the beauty humans were never intended to see. A light rain weeps from the porous rock above and covers the crater sides with a shine that makes it sparkle. The scorch marks can be seen close up - at one point in time these rock faces were glowing red with fiery heat. This giant, although sleeping, is still dangerous: an 80-metre drop into the void is disguised by a collection of rocks close to where visitors stand.
It is a soul-enriching experience and visitors often report feeling deeply moved by the beauty and tranquillity of something that was once so destructive and angry. Confronted with this result of the unrestrained forces of nature, it is hard not to feel small and powerless in comparison. Sadly, the magical spell is broken when the basket appears, indicating that it is time for visitors to return to reality. On the return hike, visitors walk across the lava fields as though they are astronauts on the moon. They pass enormous open wounds where the landscape is literally tearing itself apart as tectonic plates slowly shift. It serves as one final reminder that this giant is merely dormant, not dead.
Question: How do tourists reach the base of the crater?
Option 1: They go through the tectonic plates.
Option 2: They go across lava fields.
Option 3: They walk down.
Option 4: They descend in a basket.
Correct Answer: They descend in a basket.
Solution : The right choice is the fourth option.
Explanation: Tourists undergo a two-step process to reach the base of the crater. First, they are transported to the mouth of the crater. Once there, they are then lowered in a basket
Question : Select the most appropriate meaning of the underlined idiom in the given sentence. The MD of the company let the cat out of the bag by telling her secretary, who got the much coveted promotion.
Option 1: Openly confess.
Option 2: Creating a false story.
Option 3: To allow a secret to be known, usually without intending to.
Option 4: Secretly confide.
Correct Answer: To allow a secret to be known, usually without intending to.
Solution : The correct option is the third option.
Explanation: The idiom let the cat out of the bag means to allow a secret to be known, usually without intending to. In this context, it implies
Question : Choose the most appropriate meaning of the underlined phrase. What we need is skilled and energetic planning and elbow grease.
Option 1: The grease that is earned through labour
Option 2: Hard work that one puts into cleaning one’s elbow
Option 3: Hard work that one puts into removing grease
Option 4: Hard work that one puts into doing something
Correct Answer: Hard work that one puts into doing something
Solution : The correct choice is the fourth option.
The term elbow grease is an idiomatic expression that refers to physical effort or hard work, especially when it involves manual labour. The phrase is often used to highlight the importance
Question : Directions: Select the option in which the numbers are related in the same way as the numbers of the following sets. (8, 12, 48) (6, 18, 54)
Option 1: (6, 12, 48)
Option 2: (4, 8, 12)
Option 3: (6, 8, 30)
Option 4: (4, 8, 16)
Correct Answer: (4, 8, 16)
Solution : Given: (8, 12, 48); (6, 18, 54)
Like, (8, 12, 48)→(8 × 12) ÷ 2 = 96 ÷ 2 = 48 (6, 18, 54)→(6 × 18) ÷ 2 = 108 ÷ 2 = 54
Let's check the options – First option: (6, 12,
Question : By increasing the price of a ticket in the ratio of 8 : 11, the number of tickets sold falls by the ratio of 23 : 21. What is the increase (in Rs) in revenue, if revenue before the increase in the price of the ticket was Rs. 36800?
Option 1: 21250
Option 2: 9400
Option 3: 7850
Option 4: 12850
Correct Answer: 9400
Solution : Given: By increasing the price of a ticket in the ratio of 8 : 11, the number of tickets sold falls by the ratio of 23 : 21. Let the price of the tickets be $8x$ and $11x$ and the sales of tickets be $23y$
Question : The HCF of the two numbers is 29, and the other two factors of their LCM are 15 and 13. The larger of the two numbers is:
Option 1: 435
Option 2: 377
Option 3: 406
Option 4: 464
Correct Answer: 435
Solution : The HCF of a group of numbers will be always a factor in their LCM. HCF is the product of all common prime factors using the least power of each common prime factor. LCM is the product of the highest powers of all prime factors.
Question : Select the option that expresses the given sentence in indirect speech. The little boy said, "My cat can climb the tree."
Option 1: The little boy said that his cat climbed the tree.
Option 2: The little boy said that his cat had climbed the tree.
Option 3: The little boy said that his cat could climb the tree.
Option 4: The little boy said that his cat can climb the tree.
Correct Answer: The little boy said that his cat could climb the tree.
Solution : The correct choice is the third option.
Indirect speech involves converting direct speech (spoken words) into indirect speech (reported words).
Narration Conversion:
Question : If $\cos x=\sin y$ and $\cot(x–40°)=\tan(50°–y)$, then the values of $x$ and $y$ are:
Option 1: $x=70°,y=2°$
Option 2: $x=75°,y=15°$
Option 3: $x=85°,y=5°$
Option 4: $x=80°,y=10°$
Correct Answer: $x=85°,y=5°$
Solution : Given, $\cos x=\sin y$ ⇒ $\cos x=\cos(90°–y)$ ⇒ $x = (90°–y)$ ----------------------(equation 1) Also, $\cot(x–40°)=\tan(50°–y)$ ⇒ $\cot(x–40°)=\cot(90°–50°+y)$ ⇒ $(x–40°)=(40°+y)$ ⇒ $x=(80°+y)$ ------------------------(equation 2) Now, equating the value of $x$ from equation 1 and equation 2 we get, $(90°–y)=(80°+y)$ ⇒ $2y=10°$ ⇒ $y=5°$ So, $x=(90°–5°)=85°$ Hence,
Question : Directions: In the following question, select the missing number from the given alternatives.
Option 1: 78
Option 2: 80
Option 3: 85
Option 4: 75
Correct Answer: 85
Solution : In a row, add the first number in the square of the second number to get the third number.
In the first row→81 + 32 = 81 + 9 = 90 In the second row→ 60 + 42 = 60 + 16 =
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