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Question 41

West Bengal Civil Service (Exe.) Examination (WBCS) 2022• Full Test

'ELISA' test is employed to diagnose

  1. AOption (a)

    Polio Virus

  2. BOption (b)

    AIDS antibodies

  3. COption (c)

    Tuberculosis

  4. DOption (d)

    Cancer

View answer & explanation

Correct answer

Answer: (b)B.

AIDS antibodies

Why this answer is correct

The correct answer is AIDS antibodies.

Key Points

  • ELISA stands for enzyme-linked immunosorbent assay.
  • It is a commonly used laboratory test to detect AIDS antibodies in the blood.
  • An antibody is a protein produced by the body's immune system when it detects harmful substances, called antigens.
  • The principal of ELISA is similar to RadioImmunoAssay (RIA) but depends on an enzyme rather than a radioactive label.
  • ELISA is of four types:
  • Direct ELISA
  • Indirect ELISA
  • Sandwich ELISA
  • Competitive ELISA
  • ELISA test may be used to detect-
  • HIV which causes AIDS
  • zika virus
  • rota virus
  • lyme disease

Additional Information Polio virus

  • Polio, or poliomyelitis, is a disabling and life-threatening disease caused by the polio virus.
  • The virus spreads from person to person and can infect a person's spinal cord, causing paralysis.

Tuberculosis

  • Tuberculosis (TB) is a potentially serious infectious disease that mainly affects the lungs.
  • It is caused by a bacterium called Mycobacterium tuberculosis.
  • The bacteria usually attack the lungs, but TB bacteria can attack any part of the body such as the kidney, spine, and brain.
  • The bacteria spread from person to person through tiny droplets released into the air via coughs and sneezes.

Cancer

  • Cancer is a disease in which some of the body’s cells grow uncontrollably and spread to other parts of the body.
  • It can start from anywhere in the human body.
  • It is a genetic disease—that is, it is caused by changes to genes that control the way our cells function, especially how they grow and divide.

Question 42

West Bengal Civil Service (Exe.) Examination (WBCS) 2022• Full Test

In a family there are six members A, B, C, D, E, F. A and B are married couple. D is only son of C. A is father of E, who is granddaughter of F, whose husband has died and C is brother of A. How many male members are in the family?

  1. AOption (a)

    3

  2. BOption (b)

    4

  3. COption (c)

    5

  4. DOption (d)

    2

View answer & explanation

Correct answer

Answer: (a)A.

3

Why this answer is correct

The correct answer is 3.

Family tree

Hence, there are 3 males.

Question 43

West Bengal Civil Service (Exe.) Examination (WBCS) 2022• Full Test

Which one of the following states, Dulhasti Hydroelectric power project is located?

  1. AOption (a)

    Uttarakhand

  2. BOption (b)

    Jammu & Kashmir

  3. COption (c)

    Himachal Pradesh

  4. DOption (d)

    Sikkim

View answer & explanation

Correct answer

Answer: (b)B.

Jammu & Kashmir

Why this answer is correct

The correct answer is Jammu and Kashmir.

Key Points

  • DulHasti hydroelectric power plant is in Kishtwar district of Jammu and Kashmir.
  • The power plant is a run-of-the-river type on the Chenab River with installed capacity of 390 MW.
  • It consists of a 70 m (230 ft) tall gravity dam which diverts water through a 9.5 km (5.9 mi) long head-race tunnel to the power station which discharges back into the Chenab.
  • The construction started in 1985 and become operational on 7 April 2007.

Question 44

West Bengal Civil Service (Exe.) Examination (WBCS) 2022• Full Test

P is wife of Q and mother of R. R is grand-daughter of W. S is grandmother of T and mother of Q. Which of the following is true?

  1. AOption (a)

    R is sister of T.

  2. BOption (b)

    R is brother of T.

  3. COption (c)

    Q is daughter of S.

  4. DOption (d)

    None of the above

View answer & explanation

Correct answer

Answer: (a)A.

R is sister of T.

Why this answer is correct

The correct answer is R is sister of T.

Family tree

Hence, R is sister of T.

Question 45

West Bengal Civil Service (Exe.) Examination (WBCS) 2022• Full Test

The Reserve Bank of India was established in the year

  1. AOption (a)

    1930

  2. BOption (b)

    1935

  3. COption (c)

    1947

  4. DOption (d)

    1951

View answer & explanation

Correct answer

Answer: (b)B.

1935

Why this answer is correct

The correct answer is 1935.

Key Points

  • The Reserve Bank of India was established on April 1, 1935 in accordance with the provisions of the Reserve Bank of India Act, 1934.
  • The Central Office of the Reserve Bank was initially established in Kolkata but was permanently moved to Mumbai in 1937.
  • Since nationalisation in 1949, the Reserve Bank is fully owned by the Government of India.
  • It is India's central bank and regulatory body responsible for regulation of the Indian banking system.
  • It is under the ownership of Ministry of Finance, Government of India.
  • It is responsible for the control, issue and maintaining supply of the Indian rupee.

Question 46

West Bengal Civil Service (Exe.) Examination (WBCS) 2022• Full Test

Match the following:

(a)Kot Diji1.Luigi Pio Tessitori
(b)Harappa2.F.A. Khan, G.S. Ghurye
(c)Kalibangan3.Daya Ram Sahani
(d)Mohenjodaro4.Rakhal Das Bandyopadhyay
  1. AOption (a)

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

  2. BOption (b)

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

  3. COption (c)

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

  4. DOption (d)

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

View answer & explanation

Correct answer

Answer: (a)A.

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

Why this answer is correct

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

Key Points 

SiteExcavatorYearRiver BankPresent Location
Kot DijiF. A. Khan, G. S. Ghurye1953IndusSindh(Pakistan)
HarappaDaya Ram Sahani1921RaviSahiwal(Pakistan)
KalibanganLuigi Pio Tessitori-GhaggarHanumangarh(Rajasthan)
MohenjodaroRakhal Das Bandyopadhyay1922IndusSindh(Pakistan)

Question 47

West Bengal Civil Service (Exe.) Examination (WBCS) 2022• Full Test

In a chess tournament each of six players will play every other player exactly once. How many matches will be played in the tournament?

  1. AOption (a)

    12

  2. BOption (b)

    15

  3. COption (c)

    30

  4. DOption (d)

    72

View answer & explanation

Correct answer

Answer: (b)B.

15

Why this answer is correct

Given:

Number of players = 6

Formula used:

nCr=n!(n−r)!×r!^nC_r=\dfrac{n!}{(n-r)!× r!}

Calculation:

Since each player will play every other player once.

So, to play a game 2 players are to be chosen out of 6 players.

∴ n=6n=6n=6

and r=2r=2r=2

∴ 6C2=6!(6−2)!×2!6C2=6!(6−2)!×2!6C2=6!(6−2)!×2!

=6×5×4!4!×2!=6×5×4!4!×2!=6×5×4!4!×2!

=15=15=15

Hence, 15 is the correct answer.

Question 48

West Bengal Civil Service (Exe.) Examination (WBCS) 2022• Full Test

If Water is called Black, Black is called Tree, Tree is called Blue, Blue is called Rain, Rain is called Pink and Pink is called Fish in a certain language, then what is the colour of sky?

  1. AOption (a)

    Blue

  2. BOption (b)

    Rain

  3. COption (c)

    Fish

  4. DOption (d)

    Pink

View answer & explanation

Correct answer

Answer: (b)B.

Rain

Why this answer is correct

The correct answer is Rain.

We know that colour of sky is blue.

And in the given language Blue is called Rain.

Therefore colour of sky in that language is called Rain.

Question 49

West Bengal Civil Service (Exe.) Examination (WBCS) 2022• Full Test

Who is the current Chief of the Army Staff of India?

  1. AOption (a)

    General Upendra Dwivedi

  2. BOption (b)

    General Manoj Pande

  3. COption (c)

    General Rana Pratap Kalita

  4. DOption (d)

    General Surinder Singh Mahal

View answer & explanation

Correct answer

Answer: (b)B.

General Manoj Pande

Why this answer is correct

The correct answer is General Manoj Pande.

Key Points

  • General Manoj Pande is the current Chief of Army Staff.
  • He took over the office on April 30, 2022.
  • He succeded General Manoj Mukund Narvane.
  • The Chief of the Army Staff of India is the operational head and highest-ranking officer of the Indian Army.
  • The Chief of Army Staff is appointed for a tenure of three years or may retire at the age of 62 years, whichever is earlier.

Question 50

West Bengal Civil Service (Exe.) Examination (WBCS) 2022• Full Test

'Peaty' soils of Kerala is known as

  1. AOption (a)

    Reh

  2. BOption (b)

    Kari

  3. COption (c)

    Kallar

  4. DOption (d)

    Thur

View answer & explanation

Correct answer

Answer: (b)B.

Kari

Why this answer is correct

The correct answer is Kari.

Key Points

  • Peaty Soil is found in Kottayam and Alappuzha districts of Kerala where it is called kari.
  • It is also found in the coastal areas of Odisha and Tamil Nadu, Sunderbans of West Bengal, in Bihar and Almora district of Uttarakhand.
  • It is formed by the accumulation and decomposition of organic materials (derived from plant remains) under the waterlogged environment where there is lack of oxygen.

Additional Information

  • Reh, kallar, thur, etc are various local names of saline soil.