Your Answer : (Not Answered)

Correct Answer : B

The philanthropist gave away Rs 2,00,000.

Let there be \(m\) men and \(w\) women, with \(m + w = 300\). The gifts claimed are

\[ \begin{aligned} 750 \cdot \tfrac{8}{9}m + 1000 \cdot \tfrac{2}{3}w &= \tfrac{2000}{3}m + \tfrac{2000}{3}w \\ &= \tfrac{2000}{3}(m + w) \\ &= \tfrac{2000}{3} \times 300 = 200000 \end{aligned} \]

Each claiming man and each claiming woman works out to the same Rs 2000/3 per eligible person, so the split between men and women does not matter. The other amounts come from using only one group's rate for everyone or from slips in the fractions.

Your Answer : (Not Answered)

Correct Answer : A

Work outward from the innermost bracket.

\[ 1 \div 1 = 1 \quad\Longrightarrow\quad 1 \div 1 = 1 \quad\Longrightarrow\quad 1 \div 1 = 1 \]

Every division returns 1, so the whole expression is 1.

Your Answer : (Not Answered)

Correct Answer : B

Apply the two changes as multipliers in turn.

\[ P \times 1.10 \times 0.90 = 0.99P \]

\[ 0.99P = 7920 \quad\Longrightarrow\quad P = 8000 \]

A rise of 10% followed by a fall of 10% does not return to the start: the fall acts on the larger figure, leaving a net loss of \( \left(\tfrac{10}{100}\right)^{2} = 1\% \). The order of the two makes no difference to that.

Your Answer : (Not Answered)

Correct Answer : D

With \( b \) the still-water speed and \( r \) the stream's,

\[ \text{downstream} = b + r, \qquad \text{upstream} = b - r \]

Convert each time to hours and divide into the three-quarter kilometre.

\[ b - r = \frac{0.75}{11.25/60} = \frac{0.75 \times 60}{11.25} = 4 \text{ km/hr} \]

\[ b + r = \frac{0.75}{7.5/60} = \frac{0.75 \times 60}{7.5} = 6 \text{ km/hr} \]

\[ b = \frac{6 + 4}{2} = 5 \text{ km/hr} \]

The current runs at 1 km/hr. Both times must be converted before averaging - averaging the times instead of the speeds gives a different and wrong figure.

Your Answer : (Not Answered)

Correct Answer : B

The marbles used to tile the floor are square marbles.

Therefore, the length of the marble=width of the marble.the length of the marble=width of the marble.

As we have to use whole number of marbles, the side of the square should a factor of both 5 m 78 cm and 3m 74. And it should be the highest factor of 5 m 78 cm and 3m 74.

5 m 78 cm = 578 cm and 3 m 74 cm = 374 cm.
The HCF of 578 and 374 = 34.

Hence, the side of the square is 34.

Your Answer : (Not Answered)

Correct Answer : B

The statement mentions that participative management policy 'will' provide quality life to the workers. So, I is not implicit. Clearly, the statement mentions that participative management will contain the indiscipline and ensure quality life to workers. So, II is implicit.

Your Answer : (Not Answered)

Correct Answer : A

The alphabets are coded as shown :

So, In TWELVE ,
T is coded as 8,
W as 6,
E as 3,
L as 2,
V as 0.
Thus, the code for  TWELVE is 863203.

Your Answer : (Not Answered)

Correct Answer : C

The correct order is (iii)-(iv)-(i)-(ii): Amar Manikya, Govinda Manikya, Krishna Manikya, Krishnakishore Manikya.

1. Amar Manikya: late 16th century, remembered for the Amar Sagar tank and the town of Amarpur.
2. Govinda Manikya: second half of the 17th century, the king of Tagore's play Bisarjan.
3. Krishna Manikya: second half of the 18th century, who moved the capital to Old Agartala.
4. Krishnakishore Manikya: first half of the 19th century, who moved it to the present Agartala.

The other orders place Krishnakishore before Krishna Manikya or start with Krishnakishore, both of which reverse the 18th and 19th centuries.

Your Answer : (Not Answered)

Correct Answer : C

It was Maharaja Ganga Singh of Bikaner.

Ganga Singh commanded the Bikaner Camel Corps (Ganga Risala) in the First World War and was a member of the Imperial War Cabinet. In 1919 he represented India at the Paris Peace Conference and signed the Treaty of Versailles with Germany on India's behalf.

Madho Singh II was the ruler of Jaipur, Fateh Singh the Maharana of Mewar, and Sardul Singh was Ganga Singh's son and successor at Bikaner. None of them represented India at Paris.

Your Answer : (Not Answered)

Correct Answer : A

Metals are the most numerous class of known elements.

Of the 118 elements, about 90 are metals, some 17 non-metals and 7 or 8 metalloids. Everything below and to the left of the metalloid staircase in the periodic table is metallic, including all the d- and f-block elements.

Your Answer : (Not Answered)

Correct Answer : D

All of the above.

Radio waves pass through cloud, dust and the daylight sky, which stop or swamp visible light, so a radio telescope works around the clock and in any weather. It also detects sources - pulsars, quasars, cold hydrogen clouds - that emit little or no visible light at all.

Your Answer : (Not Answered)

Correct Answer : B

The apparent weight is more than the true weight.

For a lift accelerating upwards with acceleration \(a\), the floor must both support the body and accelerate it: \[N - mg = ma \Rightarrow N = m(g+a)\] The reading is that normal force, so it exceeds \(mg\). Going down with acceleration \(a\) it would read \(m(g-a)\).

Your Answer : (Not Answered)

Correct Answer : A

Harbhajan Singh took the first hat-trick by an Indian in Test cricket, dismissing Ricky Ponting, Adam Gilchrist and Shane Warne at Eden Gardens in March 2001.

He took 32 wickets in that three-Test series, which India won 2–1 after following on at Kolkata.

Your Answer : (Not Answered)

Correct Answer : C

Vikas Gowda is a discus thrower, and holds the Indian national record at 66.28 m.

He won gold at the 2014 Commonwealth Games and at the 2013 Asian Championships, and competed at three Olympic Games.

Your Answer : (Not Answered)

Correct Answer : C

Television is credited to him.

Vladimir Zworykin invented the iconoscope camera tube in 1923 and the kinescope picture tube in 1929, which together made all-electronic television possible. He worked at Westinghouse and then RCA.

Your Answer : (Not Answered)

Correct Answer : D

They are Sri Lanka and Singapore.

Tamil is one of Sri Lanka's two official languages and one of Singapore's four. It is also recognised in Malaysia and taught there, but is not an official language.

Your Answer : (Not Answered)

Correct Answer : A

Correct answer: Condensation

Condensation is the change from vapour to liquid, and it is what forms clouds. Rising air expands and cools; cooler air holds less water vapour, so once the parcel reaches saturation the surplus vapour condenses onto microscopic particles - dust, salt, smoke - called condensation nuclei. Without those nuclei the air would simply become supersaturated. The height at which this begins is the condensation level, which is why the flat bases of fair-weather cumulus clouds all sit at the same altitude on a given day. The other three are the neighbouring stages of the water cycle: evaporation turns liquid water to vapour, transpiration releases vapour from plant leaves, and infiltration is the soaking of water down into the soil.

Your Answer : (Not Answered)

Correct Answer : B

The highest peak of the Karakoram is K2, also called Godwin-Austen.

At 8,611 m it is the second highest mountain in the world after Everest, and is reckoned far harder to climb - it has never been summited in winter until recently, and its fatality rate is among the highest of the 8,000 m peaks.

Your Answer : (Not Answered)

Correct Answer : B

Correct answer: hepatitis A

An infected food handler sheds virus in the stool for a week or two before becoming jaundiced, and by then may have prepared food for hundreds of people. Since hepatitis A is enterically transmitted and survives well on surfaces, this is a classic outbreak scenario. The blood-borne viruses are not spread this way.

Your Answer : (Not Answered)

Correct Answer : A

Correct answer: Staphylococci

Staphylococci divide in several planes at random and stay together, so they form irregular grape-like clusters - which is what the name means. Division in one plane gives pairs or chains, and in two perpendicular planes tetrads.