RRB NTPC CBT 1 Question Paper (Held On: 5 Jan 2021 Shift 2) - RRB NTPC/ASM/CA/TA MCQ

Given:

Highest salary in C5 = 75 lakhs

Lowest salary in C6 = 50 lakhs

Calculation:

Difference between the highest and lowest salary = 75 - 50 = 25 lakhs

Difference percentage = 25/50 × 100 = 50%

∴ The required percentage is 50%

The correct answer is New Delhi, India.

• The three Days World Sustainable Development Summit 2019 was organized in New Delhi, India.​

Important Points

• World Sustainable Development Summit, 2019 was organized on 11-13 February 2019.
• It was hosted by The Energy and Resources Institute.
• World Sustainable Development Summit will focus on the theme 'Attaining the 2030 Agenda: Delivering on our Promise'.

Additional Information

The correct answer is Gharapuri Island.

• The Elephanta caves are situated on Gharapuri Island.

Key Points

• The Elephanta caves are located in western India on Elephanta island also called the island of Gharapuri.
• It features two hillocks separated by a narrow valley.
• The Elephanta caves contain a collection of rock art linked to the cult of shiva.
• Designated by UNESCO as a world heritage site.

Additional Information

The correct answer is Patagonian.

• Patagonian is a cold winter desert.

​Key Points

• Patagonian desert is also known as Patagonian Steppe is the largest desert located in Southern Argentina and part of Chile.
• It is the 8th largest desert in the world by area.
• It is bounded by the Andes to its west, the Atlantic Ocean to its east.
• Patagonian desert has an annual average temperature of around 3 degrees Celsius.

Additional Information

Given:

HCF of two numbers = 15

LCM of two numbers = 225

Formula used:

Product of two numbers = HCF × LCM

Calculation:`

Let the numbers be = a and b

ab = 15 × 225

⇒ 45b = 15 × 225

∴ b = 15 × 225/45 or 75

The correct answer is Saliva.

• Saliva helps in food digestion.

Important Points

• Saliva is a clear liquid made by the salivary glands in the mouth area.
• It is mostly made of water.
• Saliva also contains Mucus, white blood cells, epithelial cells, enzymes, antimicrobial agents.

Additional Information

The correct answer is provincial autonomy.

Important Points

• The Government of India Act, 1935 was passed by British Parliament in 1935 and came into effect in 1937.
• It was based on the report by a Joint Select Committee led by Lord Linlithgow.
• It was organized into 11 parts and 10 schedules.
• Key features: The creation of a 'Federation of India' that consisted of two levels, a central executive and Parliament, and below it provinces and princely states.
  • It discarded the dyarchy system at the provincial level. And it was replaced with the Provincial Autonomy. Hence option 1 is correct.
  • A federal court was established.
  • It further extended the principle of communal representation by providing separate electorates for depressed classes (scheduled castes), women and labour (workers).

Given:

sin 2A = 2 sin A

Formula used:

sin 2A = 2sinA cosA

Calculation:

sin 2A = 2 sin A

⇒ 2sinA cosA = 2 sin A

⇒ cosA = 1

⇒ cosA = cos0°

∴ A = 0°

Alternate MethodBy Hit and Trial Method

At A = 0°; sin 2A = 2 sin A

At A = 60°; sin 2A ≠ 2 sin A

At A = 30°; sin 2A ≠ 2 sin A

At A = 90°; sin 2A ≠ 2 sin A

Formula used:

Class marks = (Lower limit + Upper limit)/2

Calculation:

The sum of the class marks of 90-120 and 120-150 = (90 + 120)/2 + (120 + 150)/2

⇒ 210/2 + 270/2 = 105 + 135 = 240

∴ The required result = 240

Given:

Time taken by first puncture to flat the tyre = 9 minutes

Time taken by second puncture to flat the tyre = 6 minutes

Formula used:

Total work = Efficiency × Time

Calculation:

By LCM Method

Let the total capacity of air in the tyre be the LCM of 9 and 6 as a common multiple.

∴ Time taken by both the punctures to flat the tyre = 18/(2 + 3)

⇒  3 3/5 minutes

Alternate MethodLet the capacity of the tyre be = 1

Quantity of air leaked by first puncture in 1 minute = 1/9

Quantity of air leaked by second puncture in 1 minute = 1/6

⇒ Quantity of air leaked by both the punctures = 1/9 + 1/6

⇒ 5/18

∴ Time taken by both the punctures to flat the tyre = 1 ÷ 5/18

⇒ 18/5 =  3 3/5 minutes

The correct answer is Asymmetrical Digital Subscriber Line.

Important Points

• Asymmetrical Digital Subscriber Line is a type of digital subscriber line technology a data communications technology that enables faster data transmission over copper telephone lines.
• Asymmetrical Digital Subscriber Line works by using spectrum above band used by voice telephone calls.
• It provides high transmission speed for video and voice over an ordinary copper telephone wire.

Given:

Natural numbers: 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12

Concept:

Prime numbers = Those numbers which have 2 factors. That is 1 and the number itself.

Here, prime numbers are 2, 3, 5, 7, 11

Composite numbers = Those numbers which have more than 2 factors are composite numbers.

Here, these are 4, 6, 8, 9, 10, 12 (6 in total)

Calculation:

Total numbers = 11

∴ The fraction of composite numbers from 2 to 12 = 6/11

a³ - b³ = (a - b)(a² + ab + b²)

(2m)³ - n³ = (2m - n)(4m² + 2mn + n²)

The correct answer is Xylem.

Important Points

• Xylem is one of the two types of transport tissue in vascular plants.
• The basic function of the xylem is to transport water from roots to stems and leaves, it also transports nutrients.
• The word xylem is derived from the Greek word xylon meaning wood.

Additional Information

The correct answer is the Philippines.

• The Philippines is the headquarters of the Asian Development Bank (ADB).​

Key Points

• Asian Development Bank(ADB) is a regional development bank.
• It has 68 members for now.
• ADB resembles closely with World Bank, it has a similar voting system where votes are distributed in proportion to members' capital subscriptions.
• The Asian Development Bank is a regional development bank established on 19 December 1966, which is headquartered in the Ortigas Center located in the city of Mandaluyong, Metro Manila, Philippines.
• The company also maintains 31 field offices around the world to promote social and economic development in Asia.
• The current President of ADB is Mr. Masatsugu Asakawa (As of Sept 2022).

Additional Information

The correct answer is 1974.

• George Fernandes led the railway strike in 1974.​

Key Points

• George Mathew Fernandes was an Indian trade unionist, statesman, Journalist.
• He was born on 3 June 1930.
• He was a former member of the Rajya Sabha and Lok Sabha.
• All India Railway strike of 1974 was the most notable strike organized by Fernandes when he was the president of All India Railwaymen's Federation.

Additional Information

Important Points

All the Railway Zones Headquarters of India:

Given:

Time taken by Amar Jeet Singh to do the work = 5 days

Time taken by Amar Jeet Singh and his son to do the work = 3 days

Formula used:

Total work = Efficiency × Time

Calculation:

By LCM Method

Let the total work be the LCM of 5 and 3 as being the common multiple.

Efficiency of the son = 5 - 3 = 2 units per day

∴ No of days taken by the son to do the job = 15/2 = 7.5 or 7 1/2  days.

Alternate MethodLet the total work be = 1

One day work done by Amar Jeet Singh = 1/5

One day work done by Amar Jeet Singh and his son = 1/3

⇒ One day work done by the son = 1/3 - 1/5

⇒ (5 - 3)/15

⇒ 2/15

∴ Time taken by the son to do the job = 1÷ 2/15

⇒ 15/2 = 7.5 days

We have drawn the figure according to the information given in the question,

(Let the turning points as shown in the figure)

Hence, the railway station situated in south-west direction with respect to the planetarium.

The correct answer is 100.

• According to the Ancient Monuments and Archaeological Sites and Remains Act 1958, any structure, sculpture, inscription, etc., which are in existence for no less than 100 years is termed ancient.

​Key Points

• Ancient Monuments and Archaeological Sites and Remains Act 1958 is an Act to provide for the preservation of ancient and historical monuments and archaeological sites and the remains of national importance, for the regulation of the archaeological excavations, and the protection of cultures, carvings, and other like objects.
• According to the Act Ancient Monuments any structure, erection or monument, or any tumulus or place of interment or any cave. rock-sculpture, inscription, or monolith which is of historical, archaeological, or artistic interest and which has been in existence for not less than 100 years. These include
  • Remains of the ancient monument.
  • Site of the ancient monument.
  • A portion of land adjoining the site of the ancient monument.
  • The means of access to and convenient inspection of the ancient monument.

Additional Information About ASI (Archaeological Survey of India):

• The Archaeological Survey of India (ASI), under the Ministry of Culture, is the premier organization for the archaeological researches and protection of the cultural heritage of the nation.
• The main work of this organization is to Maintenance of ancient monuments and archaeological sites and remains of national importance are the prime concern of the ASI.
• Besides it regulate all archaeological activities in the country as per the provisions of the Ancient Monuments and Archaeological Sites and Remains Act, 1958. It also regulates Antiquities and Art Treasure Act, 1972.
• The Archaeological Survey of India (ASI) was formed in 1861 by a statute passed into law by Canning, with Alexander Cunningham as its first Archaeological Surveyor, to excavate and conserve India’s ancient built heritage.
• The current Director-General of ASI is Smt. Usha Sharma (As of Oct 2021).

Given:

Calculation:

= 0.23232323...... + 0.22222222.......

⇒ 0.45454545.......

⇒

∴ The required result = = 0.454545....

The correct answer is Kingdom of Awadh.

Key Points

• The Kingdom of Awadh was called "a cherry" by Governor-General Lord Dalhousie.
  • To be precise, in 1851, Governor-General Lord Dalhousie described the kingdom of Oudh as "a cherry that will one day fall in our mouths".
  • Five years later, in 1856, the state was formally annexed to the British Empire.
  • A subsidiary alliance had already been imposed on Oudh in 1801.
  • The Nawab had to disband its military power and according to the alliance, the British had to allow their troops to be stationed within the state.
  • The Nawabs became increasingly dependent on the British for maintaining law and order within the state.
  • The British felt that the soil of Awadh was good for the production of indigo and cotton.
  • The acquisition of Awadh in 1856 was expected to complete the process of territorial merger.

Given:

Difference between selling prices = 1800 - 1750 = 4% gain on Cost Price

Concept:

Profit is calculated on cost price, where Profit = Selling price - Cost price

Calculation:

SP1 - SP2 = 4% of CP

⇒ 1800 - 1750 = 4% of CP

⇒ 1% of CP = 50/4

⇒ 100% of CP = 50/4 × 100

∴ 100% of CP = Rs.1250

The cost price of the table is Rs.1250.

The correct answer is Aravali.

Key Points

• Aravali hills have an Indian desert to its western margin.
• Aravalli Range is in Northern-Western India. It passes through Delhi, Haryana, Rajasthan, and Gujarat.
• The Indian desert (Thar desert) lies towards the western margins of the Aravali Hills.
• It has a sandy plain covered with sand dunes. It has an arid climate with low vegetation cover.

Important Points

• Please note that the Aravalli Range is the oldest range of Fold Mountains in India.
• The range is divided into two sections:
  • the Sambhar-Sirohi range
  • the Sambhar-Khetri range
• Guru Peak on Mount Abu is the highest peak in the Aravalli Range and it is located in the Sambhar-Sirohi range.

Additional Information

• Kanchenjunga is the third highest mountain in the world with an elevation of 8,586 meters.
• The Palani Hills are a mountain range in the southern Indian states of Kerala and Tamil Nadu.
• Mount Dhupgarh is the highest point in the Mahadeo Hills, Madhya Pradesh

Given:

x ∝ y

⇒ x = ky [k is a constant]

Calculation:

When x = 10; y = 15

⇒ 10 = 15k

⇒ k = 2/3

Option A: For x = 15; y = 20

⇒ 15 = 20k

⇒ k = 3/4 ≠ 2/3

Option B: For x = 8; y = 12

⇒ 8 = 12k

⇒ k = 2/3

Option C: For x = 25; y = 37.5

⇒ 25 = 37.5k

⇒ k = 25/37.5 = 2/3

Option D: For x = 2; y = 3

⇒ 2 = 3k

⇒ k = 2/3

∴ All except option A, satisfy the value of k. So 15, 20 cannot be the corresponding values of x and y.

Given:

(sin A + cos A)2 - 2sin A cos A

Formulas used:

(a + b)² = a² + b² + 2ab

sin²A + cos²A = 1

Calculation:

(sin A + cos A)2 - 2sin A cos A

⇒ sin2A + cos2A + 2sin A cos A - 2sin A cos A

⇒ 1 + 2sin A cos A - 2sin A cos A

⇒ 1

∴ The required value = 1

Alternate MethodBy Value Putting Method

For A = 45°

(sin A + cos A)2 - 2sin A cos A

⇒ (1/√2 + 1/√2)² - 2 × 1/√2 × 1/√2

⇒ (√2)² - 1

⇒ 2 - 1 = 1

Given: {((3A6)D(6B3))E((6B4)A(3B2))}C=?

Logic:

By inserting codes and then using BODMAS Rule:

{((3 + 6) × (6 - 3)) ÷ ((6 - 4) + (3 - 2))}³

= {(9 × 3) ÷ (2 + 1)}³

= {27 ÷ 3}³

= {9}³

= 729

Hence, 729 is the correct answer.

Given series: QwE@rTy;MnB#vCx/DfG*hJk

When Reversed → kJh*GfD/xCv#BnM;yTr@EwQ

The letter that precedes the letter D → kJh*GfD/xCv#BnM;yTr@EwQ is f.

Hence, f is the correct answer.

Given: Book : Author :: Movie :

Logic:

Author writes a Book.

Similarly,

Director directs a Movie.

Hence, director is the correct answer.

Given: REGULATION is written as QDFTKZSHNM.

Logic: By decreasing positional value by 1, as shown:

Similarly,

Hence, RXLONRHTL is the correct answer.

Given: Direct : Indirect :: Different : ?

Logic:

The opposite of Direct is Indirect.

Similarly,

The opposite of Different is Identical.

Hence, Identical is the correct answer.

Important PointsIdentical means similar in every detail; exactly alike.

Inconsistent means acting at variance with one's own principles or former behaviour.

Indistinct means not clear or sharply defined.

Inanimate means showing no sign of life; lifeless.