Search Previous Year Questions

Find real questions from previous competitive exam papers with answers and solutions.

Browse complete papers
1100 matching questions · Page 48
Clear

Question 471

RRB Section Controller 2016• Test

Rajneesh covers equal distances at speeds of 6 km/h, 4 km/h and 8 km/h respectively and takes a total time of 32.5 minutes. Find the total distance in km.

A. 4

B. 2

C. 1

D. 3

  1. AOption (a)

    D

  2. BOption (b)

    B

  3. COption (c)

    C

  4. DOption (d)

    A

View answer & explanation

Correct answer

Answer: (a)A.

D

Why this answer is correct

Given:

Rajneesh speed 6 km/h, 4 km/h, 8 km/h.

Total time = 32.5 minutes

Formula used:

Speed = Distance/Time

Calculation:

Let the distance be 'x' km.

Total time taken

⇒ (x/6) + (x/4) + (x/8) hr = 32.5 minutes

⇒ (13x/24) hr = 32.5 minutes

⇒ (13x/24) × 60 minutes = 32.5 minutes

⇒ x = 1 km

Total distance covered 

⇒ 1 + 1 + 1

⇒ 3 km

∴ The total distance is 3 km.

Question 472

RRB Section Controller 2016• Test

How many bits are equal to one byte?

 A. 4

B. 8

C. 12

D. 32

  1. AOption (a)

    D

  2. BOption (b)

    C

  3. COption (c)

    A

  4. DOption (d)

    B

View answer & explanation

Correct answer

Answer: (d)D.

B

Why this answer is correct

The correct answer is B.

Key Points

  • "Bit" is the smallest unit in computer information systems.
  • 1 byte contains 8 bits.
  • 1,024 Byte = 1 Kilo Byte (KB)
  • 1024 KB Byte = 1 MB
  • 1024 MB = 1 GB
  • 1024 GB = 1 TB
  • 1024 TB = 1 PB
  • 1024 PB = 1 EB
  • 1024 EB = 1 ZB

Question 473

RRB Section Controller 2016• Test

Lohit, as an airman, is twice as capable as Aayush and together they finish a job in 17 days. In how many days does Aayush alone finish the same work?

A. 34

B. 51

C. 68

D. 40

  1. AOption (a)

    D

  2. BOption (b)

    B

  3. COption (c)

    A

  4. DOption (d)

    C

View answer & explanation

Correct answer

Answer: (b)B.

B

Why this answer is correct

Given:

Aayush and Lohit together can finish in 17 days.

Lohit efficiency = 2 × Aayush efficiency

Calculation:

Lohit efficiency = 2

Aayush efficiency = 1

Lohit + Aayush Efficiency

⇒ 2 + 1 = 3

Aayush and Lohit together can finish in 17 days

Total work

⇒ 17 × 3

⇒ 51

Aayush can finish alone 

⇒ 51/1

⇒ 51 days

∴ Aayush can finish alone in 51 days.

Question 474

RRB Section Controller 2016• Test

Which of the following cities falls on the line of the equator?

A. Pontianak

B. Cairo

C. Port Blair

D. Addis Ababa

  1. AOption (a)

    D

  2. BOption (b)

    A

  3. COption (c)

    C

  4. DOption (d)

    B

View answer & explanation

Correct answer

Answer: (b)B.

A

Why this answer is correct

The correct answer is A.

Key Points

  • The equator passes through the Indonesian city of Pontianak (the capital of the province).
  • The equator passes through a total of 13 countries, they are -
  • Countries of South America continent - Ecuador, Colombia, and Brazil.
  • Countries of the continent of Africa - Gabon, Republic of Congo, Democratic Republic of Congo, Uganda, Kenya, Somalia, Saotome and Principe (Island)
  • Countries on the continent of Asia - Maldives, Indonesia, Kiribati

Additional Information

  • The equator is a line which divides the earth in two equal part.
  • The Equator is the line of 0 degrees latitude.

Question 475

RRB Section Controller 2016• Test

Read the statement and choose one conclusion from the given alternatives.:

Statements:

  1. Nobody else but only the poor can spend on rickshaws
  2. Some people travelling by rickshaw become ill
  3. Some of those who become ill require treatment.

Conclusions:

A. All poor people travel by rickshaw.

B. People who travel by rickshaw become ill.

C. All poor people become ill.

D. All those who travel by rickshaw are poor.

  1. AOption (a)

    B

  2. BOption (b)

    A

  3. COption (c)

    C

  4. DOption (d)

    D

View answer & explanation

Correct answer

Answer: (d)D.

D

Why this answer is correct

Given,

Statement:

  1. Nobody else but only the poor can spend on rickshaws.
  2. Some people travelling by rickshaw become ill.
  3. Some of those who become ill require treatment.

Conclusions:

A. All poor people travel by rickshaw → False

B. People who travel by rickshaw become ill → False

C. All poor people become ill → False

D. All those who travel by rickshaw are poor → True

Here we see only conclusion D is correct.

Hence the correct answer is D. All those who travel by rickshaw are poor.

Question 476

RRB Section Controller 2016• Test

Antiseptic properties in soap are found due to one of the following mixtures- 

A. Bithional

B. Sodium lauryl sulfate

C. Rosin

D. Sodium dodecyl benzenesulfonate

  1. AOption (a)

    B

  2. BOption (b)

    D

  3. COption (c)

    C

  4. DOption (d)

    A

View answer & explanation

Correct answer

Answer: (d)D.

A

Why this answer is correct

The correct answer is A.

Key Points

  • Antiseptic is a substance, that prevents the spread of bacteremia or reduces its effects.
  • The soap has antiseptic properties due to 'Bithional'.
  • Soaps are generally sodium salts of high fat-acids.
  • . Bithional is an aromatic compound.

 

Additional Information

  • Sodium laurel sulfate (SAS) is an organic compound used in toothpaste and cosmetics.
  • Sodium dodecyl benzenesulfonate is a type of detergent.
  • Rosin is a solid form of resins. Rosin is obtained as a by-product in the manufacture of turpentine oil.

Question 477

RRB Section Controller 2016• Test

In a certain code language, if AKASH is coded as 29208 and BRIJESH is coded as 1536708, then how will SHABIR be coded?

A. 549046

B. 531280

C. 802531

D. 082135

  1. AOption (a)

    A

  2. BOption (b)

    D

  3. COption (c)

    C

  4. DOption (d)

    B

View answer & explanation

Correct answer

Answer: (b)B.

D

Why this answer is correct

We know,

 

Given,

AKASH is coded as 29208 and BRIJESH is coded as 1536708

The pattern followed here is,

A = 2, K = 9, A = 2, S = 0, H = 8

and,

B = 1, R = 5, I = 3, J = 6, E = 7, S = 0, H = 8

Similarly,

SHABIR is coded as,

S = 0, H = 8, A = 2, B = 1, I = 3, R = 5

∴ SHABIR is coded as 082135.

Hence, the correct answer is 082135.

Question 478

RRB Section Controller 2016• Test

Amit sells a bus at a loss of 15% for Rs. 23,800. At what price should he sell the bus to get 15% profit?

A. 32,100

B. 33,300

C. 32,300

D. 32,200

  1. AOption (a)

    D

  2. BOption (b)

    B

  3. COption (c)

    A

  4. DOption (d)

    C

View answer & explanation

Correct answer

Answer: (a)A.

D

Why this answer is correct

Given:

Amit sells the bus at a loss of 15% for Rs. 23,800. He needs to get a profit of 15%

Concept Used:

Selling price = Cost price - loss

Calculation:

Let the cost price of the bus be x

Loss = 15x/100

The selling of the bus is (x - 15x/100)

⇒ 85x/100

⇒ 17x/20

Accordingly,

17x/20 = 23800

⇒ x = (23800 × 20)/17

⇒ x = 28000

The cost price of the bus is Rs. 28000

He wants to get 15% profit.

Profit should be (15/100) × 28000

⇒ 4200

The selling price of the bus should be (28000 + 4200)

⇒ 32200

∴ At Rs. 32200 he should sell the bus to get 15% profit.

Question 479

RRB Section Controller 2016• Test

Direction: 'Five students - Anil, Baruna, Chitra, Dave, and Elsa - represent their schools in five different sports such as cricket, football, basketball, badminton and kabaddi.

Anil plays football. Baruna and Dave do not play badminton or cricket.

Chitra does not play kabaddi. Elsa does not play cricket, basketball or kabaddi.

Who plays cricket?

A. Anil

B. Baruna

C. Chitra

D. Dev

  1. AOption (a)

    D 

  2. BOption (b)

    C 

  3. COption (c)

    B 

  4. DOption (d)

    A 

View answer & explanation

Correct answer

Answer: (b)B.

C 

Why this answer is correct

Given,

'Five students - Anil, Baruna, Chitra, Dave, and Elsa - represent their schools in five different sports such as cricket, football, basketball, badminton and kabaddi.

Anil plays football.

Baruna and Dave do not play badminton or cricket.

Chitra does not play kabaddi.

Elsa does not play cricket, basketball or kabaddi.

StudentGameDoes not play the game
AnilFootball
BarunaBasketball/ KabaddiBadminton, Cricket
ChitraCricketKabaddi
DaveBasketball/ KabaddiBadminton, Cricket
ElsaBadmintonCricket, Basketball, Kabaddi

 

Here we see Chitra play cricket.

Hence, the correct answer is C. Chitra.

Question 480

RRB Section Controller 2016• Test

Direction: 'Five students - Anil, Baruna, Chitra, Dave, and Elsa - represent their schools in five different sports such as cricket, football, basketball, badminton and kabaddi.

Anil plays football. Baruna and Dave do not play badminton or cricket.

Chitra does not play kabaddi. Elsa does not play cricket, basketball or kabaddi.

What sports does Baruna play?

A. Cricket

B. Badminton

C. Basketball

D. Cannot be determined

  1. AOption (a)

    C 

  2. BOption (b)

    D 

  3. COption (c)

    B 

  4. DOption (d)

    A 

View answer & explanation

Correct answer

Answer: (b)B.

D 

Why this answer is correct

Given,

'Five students - Anil, Baruna, Chitra, Dave, and Elsa - represent their schools in five different sports such as cricket, football, basketball, badminton and kabaddi.

Anil plays football.

Baruna and Dave do not play badminton or cricket.

Chitra does not play kabaddi.

Elsa does not play cricket, basketball or kabaddi.

StudentGameDoes not play the game
AnilFootball
BarunaBasketball/ KabaddiBadminton, Cricket
ChitraCricketKabaddi
DaveBasketball/ KabaddiBadminton, Cricket
ElsaBadmintonCricket, Basketball, Kabaddi

 

Here we see we don't know anything about Baruna.

Hence, the correct answer is D. Cannot be determined.