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Question : In measuring the sides of a rectangle, there is an excess of 5% on one side and a 2% deficit on the other. Then the error percentage in the area is:
Option 1: 3.3%
Option 2: 3.0%
Option 3: 2.9%
Option 4: 2.7%
Correct Answer: 2.9%
Solution : Given: In measuring the sides of a rectangle, there is an excess of 5% on one side and a 2% deficit on the other. We will use the successive percentage change formula. $\therefore$ Required percentage = $(5-2-\frac{5×2}{100})=(3-0.1)=2.9$% Hence, the correct answer is 2.9%.
Question : Whose law states that total energy per unit mass of flowing fluid, at any point in the subsurface, is the sum of the kinetic, potential and fluid-pressure energy and is equal to a constant value?
Option 1: Daniel Bernoulli
Option 2: Evangelista Torricelli
Option 3: Blaise Pascal
Option 4: Marie Poiseuille
Correct Answer: Daniel Bernoulli
Solution : The correct option is Daniel Bernoulli.
Bernoulli's principle, which is named after Daniel Bernoulli, a Swiss mathematician and physicist, states that the total energy per unit mass of flowing fluid at any point in the subsurface (or any point in the flow) is
Question : Identify the segment in the sentence which contains a grammatical error. The jury are from different parts of the country.
Option 1: are from
Option 2: The jury
Option 3: different parts
Option 4: of the country
Correct Answer: are from
Solution : The error lies in the first option.
Explanation: The error lies in the subject-verb agreement. Jury is a collective noun, and it's typically treated as singular. In this case, however, the error is in the usage of the plural verb are with the collective
Hello aspirant,
One of the most well-liked state civil service examinations in the nation is the UPPSC PCS test. The UPSC IAS test pattern is now more similar to the UP PCS exam pattern thanks to changes made by the UPPSC in recent years. Every year, thousands of candidates take
Question : Directions: A piece of paper is folded and cut as shown below in the question figures. From the given answer figures, indicate how it will appear when opened.
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : When the given folded paper is unfolded, it will look like –
Hence, the fourth option is correct.
Question : Select the most appropriate meaning of the given idiom. Gift of the gab
Option 1: Fluency of speech
Option 2: Freedom of speech
Option 3: First speech
Option 4: Figures of speech
Correct Answer: Fluency of speech
Solution : The correct choice is the first option.
Gift of the gab refers to the ability to speak eloquently and persuasively. It implies having a natural talent or skill for effective and articulate verbal communication. Fluency of speech means the same, thus making it
Question : A boat is moving away from an observation tower. It makes an angle of depression of 60° with an observer's eye when at a distance of 50 metres from the tower. After 8 seconds, the angle of depression becomes 30º. By assuming that it is running in still water, the approximate speed of the boat is:
Option 1: 33 km/h
Option 2: 42 km/h
Option 3: 45 km/h
Option 4: 50 km/h
Correct Answer: 45 km/h
Solution : Given: The boat makes an angle of depression of 60º with an observer's eye when at a distance of 50 metres from the tower. After 8 seconds, the angle of depression becomes 30°. Solution: Let $CD = x$ m In $\triangle ABD$ $\tan 60°=\frac{AB}{AC}$
Question : A completes 30% of a project in 30 days. He then calls in B and they together finish the remaining work in 20 days. How long would B alone take to do the whole work?
Option 1: 40 days
Option 2: 80 days
Option 3: 120 days
Option 4: 20 days
Correct Answer: 40 days
Solution : Given: A completes 30% of a project in 30 days. Let the total work be 100 units. Since we know that, Total work = Efficiency × Time. So, A's efficiency is $\frac{30}{30}$ = 1 unit each day. After that, he calls B and the
Question : The compound interest on Rs. 64,000 for 3 years, compounded annually at 7.5% p.a. is:
Option 1: Rs. 14,400
Option 2: Rs. 15,705
Option 3: Rs. 15,507
Option 4: Rs. 15,075
Correct Answer: Rs. 15,507
Solution : Amount = $P(1+\frac{R}{100})^{n}$ to calculate the answer. Where P is the principal amount, R is the rate of interest per annum, and n is the time in years. Amount = $64000(1+\frac{7.5}{100})^{3}$ = Rs. 79,507 CI = Rs. 79,507 – Rs. 64,000 = Rs.15,507 Hence,
Question : The term of trade refers to_____.
Option 1: the excess of import expenditures over export earnings
Option 2: the trade agreements
Option 3: the terms and conditions on which a country is offered loan
Option 4: the ratio between export prices and import prices
Correct Answer: the ratio between export prices and import prices
Solution : The correct option is the ratio between export prices and import prices.
In 1927, the term trade was first used by US economist Frank William Taussig. The term trade refers to the ratio at which a country can
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