Your Answer : (Not Answered)

Correct Answer : D

The number of 25-paise coins is 124, so the answer is None of these.

Let \(x\) be the 20-paise coins and \(y\) the 25-paise coins. In paise:

\[ \begin{aligned} x + y &= 324 \\ 20x + 25y &= 7100 \\ 20 \times 324 + 5y &= 7100 \\ 5y &= 620, \quad y = 124 \end{aligned} \]

Check: 200 coins of 20 paise make Rs. 40 and 124 of 25 paise make Rs. 31, Rs. 71 in all. 120, 200 and 144 do not satisfy both conditions (200 is the number of 20-paise coins).

Your Answer : (Not Answered)

Correct Answer : C

After 3 hours.

Take the book as 1 unit. Ananth reads \(1/6\) per hour and Bharath \(1/4\) per hour, so after \(t\) hours the parts still to be read are \(1 - t/6\) and \(1 - t/4\).

\[ \begin{aligned} 1 - \frac{t}{6} &= 2\left(1 - \frac{t}{4}\right) \\ \frac{t}{2} - \frac{t}{6} &= 1 \\ \frac{t}{3} = 1 &\Rightarrow t = 3 \end{aligned} \]

Check: after 3 hours Ananth has half the book left and Bharath a quarter, and a half is twice a quarter. After 1 or 2 hours Ananth's remainder is less than twice Bharath's (5/6 against 3/2, 2/3 against 1); at 4 hours Bharath has finished while Ananth still has a third to read.

Your Answer : (Not Answered)

Correct Answer : C

\[ 1 \text{ kmph} = \frac{5}{18} \text{ m/s} \]

\[ 72 \text{ kmph} = 20 \text{ m/s} \]

\[ \text{total distance} = 20 \times 25 = 500 \text{ m} \]

\[ \text{platform} = 500 - 150 = 350 \text{ m} \]

Your Answer : (Not Answered)

Correct Answer : A

The poet tells us that time will soon pass and it is a time to find one's love.

The third stanza says that the first age is best, when youth and blood are warmer, and that once it is spent, worse times follow. The last stanza turns this into advice: use your time and marry while you may. So young age is short and is the time to find love.

Options 3 and 4 each give only half of this, and option 2 says that young age is a time to work hard, which the poem never says.

Your Answer : (Not Answered)

Correct Answer : B

Correct answer: The new student asked the old one if he knew his name.

A yes-or-no question takes if alone - that whether doubles the link. Do you know then becomes he knew, with the auxiliary disappearing along with the question order, and my becomes his.

Your Answer : (Not Answered)

Correct Answer : D

Correct answer: Tea is grown in Darjeeling.

Grows is present simple, so the passive is is grown. The agent Darjeeling is a place, so it appears with in rather than by. Tea grows in Darjeeling is active again, and let the tea be grown turns a statement into a command.

Your Answer : (Not Answered)

Correct Answer : B

It means to defy.

To fly in the face of something is to act in open defiance of it, as a hawk flies at the face of its handler.

Your Answer : (Not Answered)

Correct Answer : A

It is unknown.

Obscure means little known, or hard to make out. Straightforward, unmysterious and perceptible are all its opposites.

Your Answer : (Not Answered)

Correct Answer : A

It is a figurative statement.

Archimedes was not proposing an actual experiment; no lever or fulcrum could be placed to move the Earth. He was using the image to express the power of the lever principle, which makes it figurative language, meaning beyond the literal words.

A literal statement means exactly what it says, which this one does not. Collateral means secondary or accompanying, and a figurine is a small statue; neither describes a kind of statement, though 'figurine' is a sound-alike trap for 'figurative'.

Your Answer : (Not Answered)

Correct Answer : A

The key gives Baraya dance.

I could not confirm this independently. The Bhil dances that references list (Bhagoria, Gair and the wedding and festival dances of Madhya Pradesh and Rajasthan) are performed by men and women together or by men, and none of the names in the options, Baraya, Rathya or Ghann, turned up in any source I could reach. So the key is the Commission's reading, and I cannot say what dance it has in mind.

'None of the above' is not the keyed option, and I found nothing that supports Rathya or Ghann as a women-only Bhil dance either. Ghoomar, which some sources trace to the Bhils, is danced by women, but it is a Rajasthan dance and is not among the options.

Your Answer : (Not Answered)

Correct Answer : C

Man has three pairs of salivary glands: the parotid, submandibular and sublingual.

Together they secrete about 1 to 1.5 litres of saliva a day, containing the enzyme ptyalin, which begins the digestion of starch in the mouth.

Your Answer : (Not Answered)

Correct Answer : D

Boiling cannot remove permanent hardness.

Boiling decomposes the bicarbonates of calcium and magnesium and so removes only temporary hardness. Permanent hardness comes from their chlorides and sulphates, which are unaffected by heat; it is removed by adding washing soda or caustic soda, by ion exchange, or by distillation.

Your Answer : (Not Answered)

Correct Answer : B

Katie Ledecky won the 800 m freestyle at Rio in 2016, completing a sweep of the 200 m, 400 m and 800 m titles at one Games for the first time since 1968.

Debbie Meyer of the United States had done it at Mexico City. Ledecky broke her own world record in the 800 m by two seconds.

Your Answer : (Not Answered)

Correct Answer : A

Secondary memory is also called auxiliary memory.

It is non-volatile and is reached through the input-output system rather than addressed directly by the processor - hard disks, SSDs, optical discs and tape.

Your Answer : (Not Answered)

Correct Answer : D

Ordinary water is used as a moderator in most nuclear reactors, and as the coolant at the same time.

Its job is to slow fast neutrons to thermal speeds, at which fission in uranium-235 is far more likely. Hydrogen nuclei are close in mass to a neutron, so each collision takes a large share of its energy. Cadmium, by contrast, absorbs neutrons and is used in control rods.

Your Answer : (Not Answered)

Correct Answer : A

It is Todi.

Miyan ki Todi belongs to the late morning, roughly the second prahar. Darbari is a late-night raga, Malhar belongs to the monsoon and Bhopali to the early evening.

Your Answer : (Not Answered)

Correct Answer : A

He is famous in tennis.

The Swede won six grand slam singles titles between 1985 and 1992 and was the last great exponent of serve and volley. The ATP sportsmanship award carries his name.

Your Answer : (Not Answered)

Correct Answer : A

Antarctica accounts for about 8.2 per cent of the world's land area, some 13.2 million km².

That makes it the fifth largest continent, larger than both Europe and Australia, though almost all of it is buried under ice.

Your Answer : (Not Answered)

Correct Answer : B

Correct answer: During the pleasure of the President

Article 156 provides that the Governor holds office during the pleasure of the President, with a normal term of five years. Because pleasure can be withdrawn at any time, the five years is not security of tenure but only a maximum. In practice the power is exercised on the advice of the Union Council of Ministers, so governors have often been replaced when the government at the centre changed. The Supreme Court held in B. P. Singhal in 2010 that although reasons need not be given, the power cannot be exercised arbitrarily, capriciously or for extraneous reasons, and that a change of government at the centre is not by itself a valid ground. The Sarkaria and Punchhi Commissions both recommended a fixed tenure and consultation with the Chief Minister before appointment; neither recommendation has been implemented. A Governor continues in office until a successor takes charge, may be transferred to another state, and may hold charge of two states at once.

Your Answer : (Not Answered)

Correct Answer : D

It means preparing the budget afresh each time.

Every item of expenditure must be justified from zero rather than being carried forward with an increment, so that existing programmes are re-examined along with new ones. India experimented with it in the 1980s; the difficulty is the sheer labour of the annual review.