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Question 361

Kolkata Police SI 2018• Full Test

Sardar Sarovar Dam, the biggest dam in India, is on river:-

  1. AOption (a)

    Sutlej

  2. BOption (b)

    Mahananda

  3. COption (c)

    Narmada

  4. DOption (d)

    Kangsawati

View answer & explanation

Correct answer

Answer: (c)C.

Narmada

Why this answer is correct

The correct answer is Narmada.

  • The Sardar Sarovar Dam is built on the Narmada river in Kevadiya near Navagam, Gujarat in India.
  • It is the largest dam to have been built under the 'Narmada Valley Project'.
  • It has power facilities of up to 200 MW and provides relief to drought-prone areas of Kutch and Saurashtra.
  • The Source of the Narmada river is Amarkantak and the mouth is the Arabian Sea, Gulf of Khambhat.
  • It traverses Madhya Pradesh, Maharashtra, and Gujarat and meets the Gulf of Cambay.

Important Points

RiverSourceMouthDam
SutlejMount KailashChenab River, Arabian Sea, Panjnad RiverBhakra Dam, Nathpa Jhakri Dam
MahanandaHimalayasGanges
KangsawatiChota Nagpur plateauBay of BengalMukutmanipur dam

Additional Information

  • Bhakra Dam - Himachal Pradesh is a gravity dam across the Sutlej River and features prominently on top of the largest dams in India.
  • Its reservoir is known as the 'Gobind Sagar Lake' and is the 2nd largest in India.

Question 362

Kolkata Police SI 2018• Full Test

A number is doubled and 9 is added. If the resultant is trebled it becomes 75. What is the number?

  1. AOption (a)

    12

  2. BOption (b)

    10

  3. COption (c)

    8

  4. DOption (d)

    14

View answer & explanation

Correct answer

Answer: (c)C.

8

Why this answer is correct

Given:

Double of number + 9 = resultant

Thrice of resultant = 75

Calculation:

Let the number be x

⇒ 2x + 9 = resultant 

3(2x + 9) = 75

⇒ 6x + 27 = 75 

⇒ 6x = 75 – 27

⇒ 6x = 48

⇒ x = 48/6

⇒ x = 8

∴ The number is 8

Question 363

Kolkata Police SI 2018• Full Test

In a row of 18 children, Raju is seventh from the left. If Moti exchanges his positions with Raju, Raju will be fifteenth from the left. What is Moti’s present position from the right ?

  1. AOption (a)

    Eleventh

  2. BOption (b)

    Fourth

  3. COption (c)

    Eighth

  4. DOption (d)

    Twelfth

View answer & explanation

Correct answer

Answer: (d)D.

Twelfth

Why this answer is correct

According to the given information :

After interchanging positions,

Children in the row to the right of Moti in present position = 3 + 1 (Raju) + 7

= 4 + 7

= 11.

Moti's present position from the right = 12th.

Hence, the correct answer is "Twelfth".

Question 364

Kolkata Police SI 2018• Full Test

65 litres water-contaminated milk was in a barrel where ratio between milk and water was 10 : 3. In that solution how much litre of water is to be mixed to get the ratio between milk and water as 8 : 5 ?

  1. AOption (a)

    \(16\frac{1}{4}\) litres

  2. BOption (b)

    1/4 litres

  3. COption (c)

    16 litres

  4. DOption (d)

    17 litres

View answer & explanation

Correct answer

Answer: (a)A.

\(16\frac{1}{4}\) litres

Why this answer is correct

Given:

Initially water-contaminated milk in the barrel = 65 litres

Initially Ratio between milk and water = 10 : 3

Formula Used:

a : b = a/b

Calculation:

Let x litres of water is to be mixed to get the ratio between milk and water as 8 : 5

Initially milk in the solution = (10/13) × 65 litres 

⇒ 50 litres

Initially water in the solution = (3/13) × 65 litres

⇒ 15 litres

After adding x litres of water ratio between milk and water = 50/(15 + x)

⇒ 8/5 = 50/(15 + x)

⇒ 8 (15 + x) = 5 × 50

⇒ 120 + 8x = 250

⇒ 8x = 250 – 120

⇒ 8x = 130

⇒ x = 130/8 litres

⇒ x = \(16\frac{1}{4}\)litres

∴ \(16\frac{1}{4}\) litres of water is to be mixed to get the ratio between milk and water as 8 : 5

Question 365

Kolkata Police SI 2018• Full Test

Who has been chosen as the ‘best actor’ in the 65th National Film Awards’ 2018 ?

  1. AOption (a)

    Riddhi Sen

  2. BOption (b)

    Fahad Fazil

  3. COption (c)

    Shibaprasad Mukherjee

  4. DOption (d)

    Amitabh Bachchan

View answer & explanation

Correct answer

Answer: (a)A.

Riddhi Sen

Why this answer is correct

The correct answer is Riddhi Sen.

Important Points

  • Following is the list of winners of the 65th National Film Awards’ 2018:
  • Best Actor**: Riddhi Sen for ‘Nagar Kirtan’**
  • Best Actress**: Sridevi for ‘Mom’**
  • Best Director**: Jayaraj for ‘Bhayanakam’**
  • Best Film**: Village Rockstars (Assamese)**
  • Best Music Direction**: AR Rahman for 'Katru Veliyidayi'**

Additional Information

  • In the 66th National Film Awards 2019, Vicky Kaushal and Ayushmann Khurrana were named Best Actors and Keerthy Suresh won the Best Actress award.

Question 366

Kolkata Police SI 2018• Full Test

The sum of a two-digit number and the number obtained by reversing the order of its digit is 121 and the difference of the digits is 3 (10th place digit > Unit place digit). The number is:-

  1. AOption (a)

    85

  2. BOption (b)

    36

  3. COption (c)

    74

  4. DOption (d)

    69

View answer & explanation

Correct answer

Answer: (c)C.

74

Why this answer is correct

Given:

The sum of the two-digit number and the number obtained by reversing the order of its digit = 121

Difference of digits = 3

Calculation:

Let, the 10th place digit be x and the unit place digit be y where x > y

The original number be (xy) = 10x + y

x – y = 3 

⇒ x = 3 + y

Reversed number obtained by reversing the digits of the original number = yx = 10y + x

10x + y + 10y + x = 121

⇒ 10 (3 + y) + y + 10y + 3 + y =121

⇒ 30 + 10y + y + 10y + 3 + y = 121 

⇒ 22y = 121 – 33

⇒ 22y = 88

⇒ y = 88/22

⇒ y = 4 

y = 4 then x = 3 + 4 = 7 

Then the original number is 74  

We can directly answer this question by just checking the options

Difference of the digits of the two-digit number is 3 in all the options then check the sum of the two digit number and number obtained by reversing the digits

Option: 1) 85 + 58 = 143

Option: 2) 63 + 36 = 99

Option: 3) 74 + 47 = 121

Option: 4) 96 + 69 = 165

∴ The number is 74

Question 367

Kolkata Police SI 2018• Full Test

Which state is the ‘Sugar Bowl’ of India ?

  1. AOption (a)

    Tamil Nadu

  2. BOption (b)

    Uttar Pradesh

  3. COption (c)

    Maharashtra

  4. DOption (d)

    Andhra Pradesh

View answer & explanation

Correct answer

Answer: (b)B.

Uttar Pradesh

Why this answer is correct

The correct answer is Uttar Pradesh.

  • Uttar Pradesh is the largest producer of sugarcane followed by Maharashtra and Tamil Nadu.
  • Tamil Nadu is the 'Yarn Bowl' of India and produces 40% of the total Yarn in India.

Question 368

Kolkata Police SI 2018• Full Test

Radha is younger to Sunita but elder than Rita. Rita is elder than Geeta. Shyam is elder to Rita but younger to Radha. Who is the youngest of all ?

  1. AOption (a)

    Shyam

  2. BOption (b)

    Sunita

  3. COption (c)

    Rita

  4. DOption (d)

    Geeta

View answer & explanation

Correct answer

Answer: (d)D.

Geeta

Why this answer is correct

According to the given information :

Radha is younger to Sunita

Sunita > Radha

Radha is elder than Rita

Radha > Rita

Rita is elder than Geeta

Rita > Geeta

Shyam is elder to Rita

Shyam > Rita

Shyam is younger to Radha

Radha > Shyam

The correct order of their ages is :

Sunita > Radha > Shyam > Rita > Geeta.

Geeta is the Youngest among all.

Hence, the correct answer is "Geeta".

Question 369

Kolkata Police SI 2018• Full Test

Match the following classical dance forms with States of India:-

a. Sattriya1. Tamil Nadu
b. Mohiniattam2. Kerala
c. Bharatnatyam3. Andhra Pradesh
d. Kuchipudi4. Assam
  1. AOption (a)

    a - 4, b - 2, c - 1, d - 3

  2. BOption (b)

    a - 1, b -3, c - 2, d - 4

  3. COption (c)

    a - 1, b - 2, c - 3, d - 4

  4. DOption (d)

    a - 2, b - 1, c - 4, d - 3

View answer & explanation

Correct answer

Answer: (a)A.

a - 4, b - 2, c - 1, d - 3

Why this answer is correct

The correct answer is a - 4, b - 2, c - 1, d - 3.

Important Points

Some Indian States and their dances:

STATEDANCES
Tamil NaduBharatanatyam, Mayil Attam, Karakattam.
Keralakathakali, Thirvathirakali, Kolkali.
Andhra PradeshKuchipudi.
KarnatakaKarga, Lambi, Yakshagan, Huttari.
PunjabBhangra, Giddha, Bhand, Daff, Dhaman.
Himachal PradeshJhali, Chharhi, Nati, Dangi, Jhora.
JharkhandMundari Dance, Sarhul, Barao, Karma Munda, Agni, Mardana Jhumar, Paika, Phagua, Jhitka, Danga.
AssamBihu, Satriya, Naga dance, Khel Gopal, Natpuja, Maharas, Canoe, Jhumura Hobjanai.
Madhya PradeshAada, Khada Nach, Selabhadoni, Maanch, Phulpati, Grida.
BiharBakho-Bakhain, Sama Chakwa, Bidesia, Jata-Jatin, Panwariya.
RajasthanGhumar, Chakri, Ganagor, Ghapal, Kalbeliya.

Question 370

Kolkata Police SI 2018• Full Test

Which river originates from Amarkantak of Madhya Pradesh ?

  1. AOption (a)

    Tapti

  2. BOption (b)

    Mahi

  3. COption (c)

    Narmada

  4. DOption (d)

    Tungabhadra

View answer & explanation

Correct answer

Answer: (c)C.

Narmada

Why this answer is correct

The correct answer is Narmada.

Key Points

  • River Narmada emerges from Amarkantak Hill of Maikal Range, Madhya Pradesh.
  • The mouth of this river is the Gulf of Khambhat (Arabian Sea), Gujarat.
  • The mighty Narmada River as well the Son, the Mahanadi, and Arnadoh which is a major tributary of the Godavari all arise in the Amarkantak plateau.
  • Major dams on the Narmada river are Sardar Sarovar Dam, Indira Sagar Dam, Omkareshwar Dam, Bargi Dam, etc.

Important Points

RiverSourceMouth
TaptiSatpura RangeThe Arabian Sea, Gulf of Khambhat
MahiVindhya RangeThe Arabian Sea, Gulf of Khambhat
TungabhadraVaraha Parvata, Western GhatsKrishna River