RRB NTPC CBT 1 2016: questions with answers

The UNDP Human Development Report 2015, released on 14 December 2015, ranked India 130th out of 188 countries with an HDI value of 0.609, in the 'medium human development' category.

65 − 37 = 28. Adding the same difference to 51 gives 51 + 28 = 79. (The pair can also be read as 37 + 28 = 65, so 51 + 28 = 79.)

The law of inertia is Newton's first law of motion: a body stays at rest or in uniform motion in a straight line unless an external force acts on it. Isaac Newton stated it in the Principia (1687), building on Galileo's work.

2 dozen = 24 books and 16 notebooks. The largest number of identical sets with nothing left over is HCF(24, 16) = 8, each set having 3 books and 2 notebooks.

The India State of Forest Report 2015 put total forest and tree cover at 24.16% of India's geographical area (forest cover 21.34% plus tree cover 2.82%).

Amount = 10,000 × (1.1)³ = 10,000 × 1.331 = Rs 13,310. Compound interest = 13,310 − 10,000 = Rs 3,310.

Baseball is regarded as the national sport (the 'national pastime') of the USA. American football and basketball are also popular, but baseball is the traditional answer.

A car runs on petrol as its fuel; a (steam) locomotive runs on coal. So the pair is Locomotive : Coal.

The order only says construction is banned until the municipal body finds an effective way to manage waste. It does not say construction is the only cause of waste (I fails), and the experts welcoming the order does not tell us they think no waste management happens at all (II fails). The official key marks neither.

Rahul Dravid was named the designated cricketer on the ICC's anti-corruption monitoring panel (the Anti-Corruption Unit's oversight group), as per the official answer key.

ASTROSAT, India's first dedicated multi-wavelength space astronomy observatory, was launched by PSLV-C30 from Sriharikota on 28 September 2015.

Selling price = cost price × 1.125, so CP = 2,250/1.125 = Rs 2,000. Profit = 2,250 − 2,000 = Rs 250.

Students who like French = only French (30) + Spanish and French (10) + German and French (5) = 45.

Spanish = only Spanish (20) + Spanish and French (10) = 30. German = only German (15) + German and French (5) = 20. Ratio = 30 : 20 = 3/2.

Only English = 100 − (20 + 30 + 15 + 10 + 5) = 20. Students liking only one language = 20 + 30 + 15 + 20 = 85.

Net neutrality is the principle that internet providers must treat all data equally, without blocking, throttling or charging differently for different content. It is therefore about differential pricing of internet services: TRAI's February 2016 regulation, upholding net neutrality, prohibited such discriminatory tariffs. Of the options, D names the issue net neutrality deals with.

Rabishield (RMAb), developed by the Serum Institute of India, is the world's first rabies monoclonal antibody, a fast-acting anti-rabies drug used after animal bites. It was launched in India in 2016.

NEEVS = SEVEN, ENNI = NINE and IVFE = FIVE are numbers. ENP = PEN is not a number, so it is the odd one.

Sum = 2 + 2 + 3 + 4 + 5 + 5 + 7 + 8 = 36. Mean = 36/8 = 4.5.

Alfred Nobel, the Swedish chemist whose will founded the Nobel Prizes, invented dynamite in 1867. Radium was discovered by the Curies and X-rays by Röntgen.

A = 0.001, B = 0.01, C = 0.005, D = 0.1 × 0.02 × 0.2 = 0.0004. The smallest is D.

F's father and L's mother are brother and sister, and both are children of G. G's daughter is therefore L's mother, who is the sister of F's father, i.e. F's paternal aunt.

R − P = 7 − 3 = 4 parts = Rs 1,000, so 1 part = Rs 250. Q's share = 5 parts = Rs 1,250.

The packet costs Rs 340 after a 15% discount, so its marked price = 340/0.85 = Rs 400. The marked price of each pen = 400/2 = Rs 200.

The Constitution of India was adopted on 26 November 1949 and came into force on 26 January 1950, celebrated as Republic Day.

SECR (South East Central), ECoR (East Coast) and NWR (North Western) are zones of Indian Railways. There is no 'EWR' zone.

twitter.com, facebook.com and youtube.com are website addresses (domain names). WhatsApp is written as an app name, not a web domain, so it is the odd one.

Let the sides be l and b. l + b = 13 and l² + b² = 11² = 121. Then 2lb = (l + b)² − (l² + b²) = 169 − 121 = 48, so the area lb = 24 sq cm.

x² − y² = (x − y)(x + y). Dividing by (x − y) leaves x + y.

The woman has no siblings, so her mother's daughter is the woman herself. The person in the photo has her as mother, so it is the woman's daughter.

Profit = 1,458 − 1,350 = Rs 108. Profit % = 108/1,350 × 100 = 8%.

In 1855 Dadabhai Naoroji became Professor of Mathematics and Natural Philosophy at Elphinstone College, Bombay, the first Indian to hold a professorship there.

The change of a liquid into a gas (vapour) is evaporation (or vaporisation). Condensation is gas to liquid, and sublimation is solid directly to gas.

Jupiter is the largest planet of the solar system; its diameter is about 11 times Earth's and its volume over 1,300 times Earth's.

The economist wanted to know whether the estimates rest on reliable data, which shows he is not confident about their accuracy, so II follows. 'Crossing two fingers' is a figurative guess and cannot be concluded, so I does not follow.

Replacing the symbols: 12 + 16 − 4 × 4 ÷ 2 becomes 12 − 16 ÷ 4 + 4 × 2. By BODMAS: 16 ÷ 4 = 4 and 4 × 2 = 8, so 12 − 4 + 8 = 16.

Bt cotton, Golden rice and Amflora (a potato) are genetically modified crops. Ordinary lady finger (okra) is not, so it is the odd one.

tan A = 5/12, so opposite = 5, adjacent = 12 and hypotenuse = 13. sin A = 5/13, so cosec A = 13/5.

Viswanathan Anand (2007), Sir Edmund Hillary (2008) and Sachin Tendulkar (2008) received the Padma Vibhushan. Sunil Gavaskar received the Padma Bhushan (1980), not the Padma Vibhushan.

Nitrogen pentoxide (N₂O₅) dissolved in chloroform is used as a nitrating agent in organic chemistry; it is one of the few nitrogen oxides handled as a chloroform solution. The official key marks N₂O₅.

A compiler translates the whole source code of a high-level language into object (machine) code in one go. An interpreter translates and runs one statement at a time.

After each gives Rs 5,000, the husband has 45,000 − 5,000 = 40,000 and the wife 35,000 − 5,000 = 30,000, a combined Rs 70,000. The husband's share = 40,000/70,000 × 100 ≈ 57.14%.

Ctrl + Z is Undo: it reverses the last action and restores the document to how it was before. Ctrl + Y is Redo, Ctrl + V is Paste and Ctrl + X is Cut.

Bread is made and sold at a bakery; milk is processed and supplied by a dairy.

'talk' (8756) and 'peak' (8964) share the letters a and k and the digits 8 and 6. 'peak' and 'tame' (1654) share a and e and the digits 6 and 4, so a = 6, k = 8 and e = 4. 'mine' (3214) and 'tame' (1654) share m and e and the digits 1 and 4; since e = 4, m = 1.

The Panipat Refinery in Haryana is owned and operated by Indian Oil Corporation Limited (IOCL); it is one of IOCL's largest refineries.

The passage says the fear of danger is more dangerous than the danger itself, which is what A says: fear is worse than the threat it fears. B, C and D are not stated (risk is said to rise with danger, not traded off against it).

Circumference 2πr = 18π gives r = 9 cm. Area = πr² = 81π sq cm.

Lu takes the apple and Fu the mango. Moo takes neither banana nor orange, so Moo takes the plum. Ku takes neither plum nor banana, so Ku takes the orange. That leaves the banana for Hu.

With Lu (apple), Fu (mango) and Moo (plum) fixed, Ku cannot take the plum or banana, so Ku takes the orange.

The final allocation is Lu – apple, Fu – mango, Moo – plum, Ku – orange, Hu – banana. Only 'Moo – Plum' is correct.

Ingestion is taking food into the mouth, the entry to the alimentary canal. Digestion, absorption, assimilation and egestion follow.

Before the 1971 war, India and Pakistan fought in 1965 (the Second Kashmir War), ended by the Tashkent Declaration of January 1966.

Entertainment is provided in a theatre; justice is delivered in a court.

The passage praises saving first and spending what is left, and says financial discipline makes you rich. So saving before spending leads to becoming rich, as B says. The other options go beyond the statements.

10 km west, left (south) 25 km, left (east) 10 km brings her 25 km due south of home. Turning left (north) and walking 5 km leaves her 25 − 5 = 20 km from home.

K's grandmother's only son is K's father. His only brother-in-law is K's mother's brother (maternal uncle). M is his daughter, so K and M are cousins: K is M's cousin sister.

Anti-Leprosy Day is observed in India on 30 January, the death anniversary of Mahatma Gandhi, who worked for people affected by leprosy.

Each group takes three consecutive letters and swaps the last two: A C B (ABC), D F E (DEF), G I H (GHI). Next is J L K (JKL).

Kepler's first law: every planet moves in an elliptical orbit with the Sun at one of the two foci.

cos 0° = 1, sin 30° = 1/2 and cosec 45° = √2. So 5(1) − 4(1/4) + 6(2) = 5 − 1 + 12 = 16.

M covers 100 km in 1¼ hours, a speed of 100/1.25 = 80 km/h. L is half as fast: 40 km/h.

India, Pakistan and Nepal divide their rupee into 100 paisa. In Sri Lanka the rupee is divided into 100 cents, so its smallest coin is not called paisa.

At the 12th South Asian Games (Guwahati–Shillong, February 2016) India topped the table with 188 gold medals (308 medals in all).

69 = 3 × 23, 96 = 2⁵ × 3 and 138 = 2 × 3 × 23. The only common factor is 3, so HCF = 3.

'go' is common to the first two sentences and 'ja' to their codes, so go = ja. 'office to' is common to the last two (ta, df), so home = he. In the first sentence back is one of ca, ki, vo. The only option with ja and he is 'he ca ja'.

Nuclear fission is the splitting of a heavy nucleus (such as uranium-235) into two lighter nuclei, releasing neutrons and a large amount of energy. Joining nuclei is fusion.

According to Census 2011, Uttar Pradesh is India's most populous state, with about 19.98 crore people, followed by Maharashtra and Bihar.

After one resigns, 27 − 1 = 26 nurses remain. At 1 nurse per 6 patients, at most 26 × 6 = 156 patients can be admitted.

In 2015 India had 32 UNESCO World Heritage Sites (25 cultural, 7 natural). The count has risen since (Chandigarh's Capitol Complex, Nalanda and Khangchendzonga were added in 2016).

12 ÷ 3 + 2 = 4 + 2 = 6, so the signs are ÷, + and =.

12x − 8 = 6x + 16, so 6x = 24 and x = 4.

Toxicology is the study of poisons and their effects on living organisms.

Amount = P(1 + 4 × 10/100) = 1.4P = 10,920, so P = Rs 7,800.

(a − b)² = a² + b² − 2ab, so 16 = 80 − 2ab, 2ab = 64 and ab = 32.

ISI is Pakistan's Inter-Services Intelligence agency. (In India, ISI also stands for the Indian Standards Institution mark, but of these options only Inter-Services Intelligence is a real expansion.)

Tawang Monastery (Galden Namgey Lhatse), the largest Buddhist monastery in India, is in Tawang district of Arunachal Pradesh.

723 and 728 share 'feel good', so 7 and 2 stand for feel and good; then we = 3 and factor = 8. In 9731, 7 = feel and 3 = we, so definitely and so are 9 and 1 in some order. Which is which cannot be determined.

M does 1/5 and R 1/20 of the work per day; together 1/5 + 1/20 = 5/20 = 1/4. They finish in 4 days.

A tailor works with clothes; a carpenter works with wood.

Parliament meets in three sessions: Budget, Monsoon and Winter. There is no Summer session.

Assembly language, C++ and Java are programming languages. POP3 (Post Office Protocol 3) is an email retrieval protocol.

Each letter of MOBILE moves 2 places forward (M→O, O→Q, B→D, I→K, L→N, E→G). TELEVISION gives T→V, E→G, L→N, E→G, V→X, I→K, S→U, I→K, O→Q, N→P = VGNGXKUKQP.

TRAI's call-drop rule (October 2015) required operators to credit Re 1 per dropped call, up to three a day, to the consumer on their own, without the consumer claiming it. So the compensation is paid automatically by the operator. B ignores the three-a-day cap.

The mean of 5 players is 9, so the total is 45. The four known values add to 13 + 9 + 5 + 11 = 38, so the fifth played 45 − 38 = 7 innings.

Time = 24/8 = 3 hours. Starting at 8:00 am he arrives at 11:00 am.

Arts students = 3/8 × 1,328 = 498.

2 × 4³ × 3² = 2 × 64 × 9 = 1,152 and 3 × 16 = 48. 1,152/48 = 24.

Dr. Verghese Kurien, who led Operation Flood and built Amul, is known as the 'Father of the White Revolution' in India. National Milk Day (26 November) marks his birthday.

Indian Railways began using a 5% biodiesel blend (B5) in diesel locomotives in 2015. Southern Railway was among the first zones to adopt it, setting up blending at its diesel loco sheds (such as Tiruchi) for B5 operation.

The wrong entry raised the total by 86 − 68 = 18, which raised the mean by 1/2. So the number of students = 18 ÷ 1/2 = 36.

Bluetooth is a wireless technology for exchanging data over short distances (about 10 m) between devices such as phones and headsets.

Both coordinates of (−4, −3) are negative, so the point is in the third quadrant.

Lance Naik Hanamanthappa Koppad survived six days buried under snow after an avalanche at Siachen in February 2016 but died at the Army hospital in Delhi on 11 February 2016.

Work = 5 × 9 = 45 man-days. 3 men take 45/3 = 15 days.

The primes between 50 and 80 are 53, 59, 61, 67, 71, 73 and 79. Their sum is 463.

Totals over five days: Bus 1 = 2,650, Bus 2 = 2,550, Bus 3 = 2,800, Bus 4 = 2,750. Bus 2 has the lowest total and therefore the lowest average (510 km).

Bus 3 travelled 475, 500, 525, 600 and 700 km, increasing every day. The other buses' distances fall or stay level on some day.

Daily totals: Friday 1,925, Saturday 2,050, Sunday 2,165, Monday 2,310 and Tuesday 2,300 km. Monday is the maximum.

Vasco da Gama reached India by sea on 20 May 1498, landing at Kappad near Calicut (Kozhikode) in Kerala.