RRB NTPC CBT 1 2016: సమాధానాలతో ప్రశ్నలు

Contemporary and historic are opposites in time (of the present day versus belonging to the past). In the same way, the opposite of ancient is modern.

Project Loon was run by Google (later its parent Alphabet's X lab). It used high-altitude helium balloons floating in the stratosphere as a network to beam internet access to rural and remote areas. It was shut down in 2021.

GSAT-15, a communication satellite carrying Ku-band transponders and a GAGAN navigation payload, was launched on 11 November 2015 on an Ariane 5 rocket from Kourou, French Guiana. GSAT-6 was launched in August 2015 and GSAT-16 in December 2014.

With HCF 4 and the other factors of the LCM being 5 and 7, the numbers are 4 × 5 = 20 and 4 × 7 = 28 (LCM = 4 × 5 × 7 = 140). The smaller number is 20.

Kohima is the capital of Nagaland; it is also known for the 1944 Battle of Kohima of World War II. Dimapur is the state's largest city and commercial centre, while Tezpur is in Assam.

E and F together do 1/10 of the work a day, and E alone does 1/30. So F does 1/10 − 1/30 = 2/30 = 1/15 a day and would take 15 days alone.

The Swaraj Party was founded on 1 January 1923 by Motilal Nehru and Chittaranjan Das (C. R. Das), after the Non-Cooperation Movement was withdrawn. It aimed to enter the legislative councils and oppose the British from within.

cos(π/2 − θ) = sin θ and sin(π/2 + θ) = cos θ. So the expression = 2sin θ + 3cos θ − 3sin θ − 2cos θ = cos θ − sin θ.

Banaras Hindu University in Varanasi was founded in 1916 by Pandit Madan Mohan Malaviya, with the support of Annie Besant. It is one of Asia's largest residential universities.

Aluminium, tungsten and nickel are metals and conduct electricity well. Porcelain is a ceramic insulator, which is why it is used to hold electric wires on poles and in switch bodies.

The rating was based on his performance and it was poor, so Rajesh did not perform well; I follows. A 'poor rating' means a rating that is not up to the mark, so II simply restates the statement and also follows. Both follow.

S does 50% in a days, so S alone needs 2a days; T does 25% in a days, so T alone needs 4a days. Together they do 1/(2a) + 1/(4a) = 3/(4a) of the work per day, so they need 4a/3 ≈ 1.33a days, i.e. 1.33 days when a = 1.

ICT stands for Information and Communication Technology: the technologies, such as computers, the internet, telephones and broadcasting, used to create, store and share information.

The fourth proportional x satisfies 3.6 : 6.9 = 11.4 : x. So x = 6.9 × 11.4/3.6 = 78.66/3.6 = 21.85.

The series alternately subtracts 12 and adds 6: 82 − 12 = 70, 70 + 6 = 76, 76 − 12 = 64, 64 + 6 = 70, 70 − 12 = 58, and next 58 + 6 = 64.

Carrot lovers = only carrot (21) + carrot and cabbage (12) = 33. Cauliflower lovers = only cauliflower (15) + capsicum and cauliflower (2) = 17. The difference = 33 − 17 = 16.

Students who like cabbage = only cabbage (12) + carrot and cabbage (12) = 24. So 75 − 24 = 51 do not like cabbage, which is 51/75 × 100 = 68%.

Students who like exactly one vegetable = only cabbage + only cauliflower + only carrot + only capsicum = 12 + 15 + 21 + 13 = 61. (The other 14 like two vegetables: 12 + 2.)

Sri Lanka's Kumar Sangakkara scored four successive centuries in the 2015 World Cup (against Bangladesh, England, Australia and Scotland), the first batsman to do so in World Cup cricket and in ODIs.

Moving in the same direction, the gap grows at 16 − 12 = 4 km/h. In 3 minutes (3/60 hour) the gap = 4 × 3/60 = 0.2 km = 200 m.

Consolation is offered to relieve grief; in the same way, a sedative is given to relieve pain (and anxiety). Chloroform and anaesthesia are themselves agents of numbing, not what is relieved.

The new sides are 1.25L and 1.25B, so the new area = 1.5625 LB = (25/16) LB. The difference from the old area = 25LB/16 − LB = 9LB/16 sq. cm.

SONAR (Sound Navigation and Ranging) sends sound pulses through water and listens for their echoes, and it was used extensively in World War II to detect enemy submarines. RADAR uses radio waves and works in air, not underwater.

By saying he did not want to end his career this way, hoping for another chance, and admitting 'I let the sport down', the player was accepting that he had failed the dope test. He was not challenging the result or claiming to be right, and he blamed himself, not the sport.

The adult human digestive tract, from mouth through oesophagus, stomach, small and large intestine to the anus, is about 9 metres (roughly 30 feet) long. The small intestine alone accounts for about 6–7 m of it.

Sodium, potassium and lithium are alkali metals (Group 1); they form strongly alkaline hydroxides such as NaOH and KOH. Sulphur is a non-metal whose oxides form acids (such as H₂SO₄), so it is not alkaline.

The two parents' ages total 2 × 30 = 60 and the two children's total 2 × 8 = 16. The family of four totals 76 years, so the average = 76/4 = 19 years.

Armstrong called his step a small one for a man but a giant leap for mankind, expressing that it was an achievement for all humanity. He did not call himself mankind, so I does not follow; II captures the meaning and follows.

Maximum total = 6 × 100 = 600. Percentage = 470/600 × 100 ≈ 78.33%.

With a 35% discount the SP is 65% of the marked price: MP = 26000/0.65 = Rs 40,000. With a 15% discount, SP = 85% of 40,000 = Rs 34,000.

With '÷' → ×, '+' → −, '×' → + and '−' → ÷, the expression 25 + 18 − 3 × 7 ÷ 3 becomes 25 − 18 ÷ 3 + 7 × 3. Division and multiplication first: 18 ÷ 3 = 6 and 7 × 3 = 21. Then 25 − 6 + 21 = 40.

Speed = 1000 m ÷ (10 × 60) s = 1000/600 ≈ 1.67 m/s.

The Five Year Plan for 2012–17 was India's 12th (and last) Five Year Plan. In 2015 the Planning Commission was replaced by NITI Aayog, and the plans were discontinued after 2017.

The first Rs 500 is deposited at the start of year 1 and earns interest for 2 years: 500 × 1.1² = 605. The second Rs 500, deposited at the start of year 2, earns for 1 year: 500 × 1.1 = 550. Maturity value = 605 + 550 = Rs 1,155.

Aneurysm (a bulge in an artery wall), cardiomyopathy (disease of the heart muscle) and myocardial rupture (a tear in the heart wall after a heart attack) relate to the heart and blood vessels. Diphtheria is a bacterial infection of the throat and nose, so it is not a heart ailment.

'great' is in all three sentences and 'cp' in all three codes, so great = cp. 'is' and 'great' are shared by the first and third, so is = bo. That leaves god = an (first sentence) and he = dq (third). So 'he is god' = dq bo an, i.e. an bo dq.

The euro (€) is the common currency of the Eurozone, the EU countries that have adopted it (20 today). The UK uses the pound sterling, and Sweden and Denmark use their own kronor/kroner.

If every number is increased by 2, the mean also increases by 2. The new mean = 35 + 2 = 37.

Gunpowder (black powder) is a mixture of about 75% potassium nitrate (saltpetre), 15% charcoal and 10% sulphur. The potassium nitrate supplies the oxygen that makes it burn rapidly.

With + − ÷ = the expression becomes (27 + 15 − 2) ÷ 10 = 4: the bracket is 40, and 40 ÷ 10 = 4, so it balances. The other orders do not give a true equation.

The most striking feature of the Indus Valley (Harappan) civilisation was its town planning with standardised baked-brick buildings: grid-pattern streets, covered drains, houses with wells and bathrooms, and the Great Bath of Mohenjo-daro.

From ARC = $@*: A = $, R = @, C = *. From HIT = #&%: H = #, I = &, T = %. So CHAIR = C * , H # , A $ , I & , R @ = * # $ & @.

'health care is wealth' = 1372 and 'he needs wealth' = 463 share only 'wealth' and the digit 3, so wealth = 3. 'health needs care' = 417 shares 'needs' with the third sentence, along with the digit 4, so needs = 4 and he = 6. In 1372, health and care are 1 and 7, leaving is = 2. 'he is wealth' = 6, 2, 3 = 623.

Perimeter 64 m means l + b = 32, and l − b = 6. Solving gives l = 19 and b = 13. Area = 19 × 13 = 247 sq. m.

12 kg sugar = 6 kg rice, so rice costs twice as much as sugar per kg: r = 2s. Then 10s + 8r = 10s + 16s = 26s = 1040, so s = Rs 40 per kg.

Each term rearranges four consecutive letters in the order 3rd, 2nd, 4th, 1st: ABCD → CBDA, EFGH → GFHE, IJKL → KJLI. The next group MNOP becomes ONPM.

The man has no brother or sister, so his father's only son is the man himself. The boy in the photo is therefore the man himself.

HCF × LCM = product of the two numbers: 6 × 108 = 648. The other number = 648/12 = 54.

9876 + 5431 = 15,307. Then ? = 15307 − 5553 = 9754.

Meena has one child, whose husband is Mohan (her only son-in-law), and Bina is their daughter, i.e. Meena's granddaughter. Kiran is also Meena's granddaughter, so Kiran is another daughter of Mohan and is Bina's sister.

NGT is the National Green Tribunal, set up in 2010 under the National Green Tribunal Act to handle environmental cases quickly. Its principal bench is in New Delhi.

The letters of 'code', 'made' and 'come' share only 'e', and their codes share only the digit 4, so e = 4. 'code' and 'made' share d and e (digits 6 and 4), so d = 6. 'made' and 'come' share m and e (3 and 4), so m = 3. In 'come', o is 1 or 2; 'to' = 27 suggests o = 2. So 'dome' = d 6, o 2, m 3, e 4 = 6234.

At the 2012 London Olympics the USA topped the medal table with 46 gold medals (104 in total), ahead of China (38 gold) and hosts Great Britain (29 gold).

After the Revolt of 1857, the Government of India Act 1858 ended East India Company rule and transferred India directly to the British Crown. Queen Victoria's Proclamation of 1 November 1858 announced it.

K's only daughter-in-law is the wife of K's son. Her husband P is therefore K's son, and E, P's daughter, is K's granddaughter.

Total cost = 40 × 125 + 60 × 150 = 5,000 + 9,000 = Rs 14,000 for 100 kg, i.e. Rs 140 per kg. For a 20% profit, SP = 140 × 1.2 = Rs 168 per kg.

Original total = 25 × 40 = 1,000. Correcting 25 to 50 adds 25, giving 1,025. Corrected mean = 1025/25 = 41.

1265 ÷ 29 = 43 remainder 18 (29 × 43 = 1247). Subtracting the remainder, 18, makes the number exactly divisible by 29.

NASA's headquarters is in Washington, D.C. Its main field centres include the Kennedy Space Center (Florida) and the Johnson Space Center (Houston, Texas).

An arrow is the projectile shot from a bow; similarly a bullet is the projectile fired from a rifle.

The passage says knowledge and wisdom go hand in hand and deeper knowledge brings greater wisdom, while each has its own role (awareness versus tackling complications). So they complement each other; they are neither the same thing nor entirely separate, and wisdom does not replace knowledge.

India's area is about 32.87 lakh sq km, roughly 2.4% of the world's land area. It is the seventh-largest country, yet it holds about 17–18% of the world's population.

Subtract the second equation from the first: (a + 2b) − (a − 2b) = 55 − (−13), so 4b = 68 and b = 17.

With a 10% discount the SP is 90% of the marked price: MP = 3600/0.9 = Rs 4,000. With a 15% discount, SP = 85% of 4,000 = Rs 3,400.

PARAM 8000, built in 1991 by C-DAC (Pune) under Vijay Bhatkar, is considered India's first supercomputer. It was developed after the USA refused to export a Cray supercomputer to India.

Bangladesh shares land borders with only two countries: India (about 4,096 km, on three sides) and Myanmar (about 270 km, in the south-east). It does not touch Bhutan or China.

DOGL = GOLD, ENZROB = BRONZE and LVREIS = SILVER are metals (or alloys) used for medals. TSEVO = STOVE is a kitchen appliance, so it is different.

Inside and outside are opposites, as are day–night, light–dark and white–black. The Sun is a star, a 'thing and its category' relationship, not opposites.

INSAT-3D, an advanced meteorological satellite with an imager and an atmospheric sounder, was launched on 26 July 2013 on an Ariane 5 rocket from French Guiana.

Checking the login name and password is authentication: confirming that the user is really who they claim to be before granting access to the system.

Statements A, B and C hold for every triangle: the largest angle faces the longest side, an exterior angle equals the sum of the two interior opposite angles, and any two sides together exceed the third. D is Pythagoras' theorem, which holds only for right-angled triangles, so it is the odd statement.

99 × 99 = (100 − 1)² = 10000 − 200 + 1 = 9801.

52° and 38° are complementary (52 + 38 = 90), and tan(90° − θ) = cot θ. So tan 38° = cot 52° = b.

Infrared rays are part of the electromagnetic spectrum, with wavelengths just longer than red light. Like all electromagnetic waves they are transverse (the electric and magnetic fields vibrate at right angles to the direction of travel) and need no medium. They are not longitudinal or mechanical waves, so the correct pair is B and D.

The statements say money was not distributed equally but God compensated with common sense, so common sense should be used to manage money; II follows. The statements do not say God was unjust; the compensation suggests the opposite, so I does not follow.

A compiler is software: a program that translates source code written in a high-level language (such as C or Java) into machine code the computer can execute.

The Tashkent Declaration was signed on 10 January 1966 by PM Lal Bahadur Shastri and Pakistan's President Ayub Khan, ending the Indo-Pak war of 1965. Shastri died in Tashkent the next day.

Let the youngest be x. The four ages are x, x + 4, x + 8 and x + 12, with sum 4x + 24 = 48. So x = 6 years.

(a + b)² = a² + b² + 2ab = 52 + 2 × 24 = 100, so a + b = 10. (The numbers are 6 and 4.)

With ratio 3 : 1 and sum 72, the numbers are 54 and 18 (72 × 3/4 and 72 × 1/4). The difference is 54 − 18 = 36.

P owns the red house, and S's house is neither yellow nor white, so S must own the blue house. The owner of the blue house is S (who is therefore the lawyer).

S is the lawyer and R is the teacher. P is not a banker, so P must be the cook, which leaves banking for Q.

P has the red house and S the blue one. The white and yellow houses belong to Q and R in some order, but no condition fixes which, so it cannot be determined.

The Narmada and Tapi are west-flowing rivers that drain into the Arabian Sea, and the Periyar flows into the Arabian Sea in Kerala. The Mahanadi flows east through Chhattisgarh and Odisha into the Bay of Bengal.

Of the options, the Chinese President who visited India is Xi Jinping, who came on a state visit in September 2014 (starting in Ahmedabad) and again for the 2019 Chennai informal summit. The question's year is off, which is likely why RRB dropped it, but Xi Jinping is the intended answer.

Sunil's total = 60 + 55 + 60 + 59 + 61 = 295. Jagdish's total = 35 + 41 + 39 + 30 + 45 = 190. The difference = 295 − 190 = 105.

History + Geography: Shyam 51 + 65 = 116, Sunil 59 + 61 = 120, Jagdish 30 + 45 = 75, Rajesh 57 + 62 = 119. Sunil has the highest, 120.

Totals: Shyam 260, Sunil 295, Jagdish 190 and Rajesh 275. Everyone took the same five subjects, so the highest total gives the highest average: Sunil (295/5 = 59).

The Khajuraho Group of Monuments, Hindu and Jain temples famous for their intricate sculptures, is in Chhatarpur district of Madhya Pradesh. Built by the Chandela dynasty (c. 950–1050 AD), it is a UNESCO World Heritage Site.

Stainless steel is an alloy, a metallic mixture of iron with at least about 10.5% chromium (and often nickel). The chromium forms a thin oxide layer that protects it from rusting.

In cellular respiration, glucose is broken down using oxygen to release energy, producing carbon dioxide and water as waste. The carbon dioxide is carried to the lungs and breathed out.

The Statue of Liberty stands on Liberty Island in New York Harbor. It was a gift from France to the United States, dedicated in 1886.

The 21st Conference of the Parties (COP 21) to the UN climate convention was held in Paris in December 2015. It produced the Paris Agreement, which aims to keep global warming well below 2 °C.

Colour blindness is usually inherited: the common red–green type is caused by a recessive gene on the X chromosome, which is why it is far more common in men. It can occasionally be acquired through eye disease or injury.

When an elevator moves at constant speed there is no acceleration, so the floor pushes up with a force equal to the person's weight. The apparent weight is unchanged; it rises or falls only while the lift accelerates or decelerates.

The Rajya Sabha (Council of States) is the Upper House of India's Parliament. It is a permanent body whose members are elected mainly by state legislatures, with one-third retiring every two years. The Lok Sabha is the Lower House.

Panda Global, Avast and Kaspersky are antivirus programs. A 'rabbit' is a type of malware that keeps replicating itself to exhaust a computer's resources, so it does not belong with the antivirus programs.

The West Indies won the 2016 ICC Under-19 Cricket World Cup in Bangladesh, beating India by five wickets in the final in Mirpur, their first U-19 title.

Sum = 1 + 9 + 7 + 3 + 5 + 5 + 6 + 4 + 2 + 8 = 50. There are 10 values, so the mean = 50/10 = 5.

A sum doubles when the simple interest equals the principal: P × R × 10/100 = P, so R = 10%.