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Question 241

Kolkata Police SI 2019• Full Test

Which one of the following units is not a unit of electrical measurement ?

  1. AOption (a)

    Coulomb

  2. BOption (b)

    Siemen

  3. COption (c)

    Angstrom

  4. DOption (d)

    Ohm

View answer & explanation

Correct answer

Answer: (c)C.

Angstrom

Why this answer is correct

The correct answer is Angstrom.

Important Points

Angstrom- An angstrom or ångström is a unit of length used to measure very small distances. - One angstrom is equal to 10−10 m
Siemen- The siemens, abbreviated S, is the SI unit of electrical conductance. - It is the conductance that will allow a current of one ampere across a potential drop of one volt. - The siemens is the reciprocal of the ohm.
Coulomb- The coulomb, also written as its abbreviation 'C', is the SI unit for electric charge. - One coulomb is equal to the amount of charge from a current of one ampere flowing for one second. - One coulomb is equal to the charge on 6.241 x 1018 protons. The charge on 1 proton is 1.6 x 10-19 C.
ohm- It is defined to be the electrical resistance between two points of a conductor when a constant potential difference applied between these points produces in this conductor a current of one ampere. - The resistance in ohms is numerically equal to the magnitude of the potential difference.

Question 242

Kolkata Police SI 2019• Full Test

The headquarters of the International Labour Organization is at

  1. AOption (a)

    New York

  2. BOption (b)

    Washington D.C.

  3. COption (c)

    Geneva

  4. DOption (d)

    Paris

View answer & explanation

Correct answer

Answer: (c)C.

Geneva

Why this answer is correct

The correct answer is Geneva.

  • The International Labour Organization (ILO) is made to promote social justice and internationally recognized human and labour rights, pursuing its founding mission that labour peace is essential to prosperity.
  • The Office employs some 2,700 officials from over 150 nations at its headquarters in Geneva, Switzerland.

Key Points

  • The ILO was created in 1919, as part of the Treaty of Versailles that ended World War I, to reflect the belief that universal and lasting peace can be accomplished only if it is based on social justice.
  • In 1946, the ILO is the specialized agency of the United Nations.
  • Its motive and structure give an equal voice to workers, employers and governments providing a unique platform for promoting decent work for all women and men.

​ 

Additional Information

New YorkIt is the headquarter of the United Nations Security Council.
Washington DCIt is the headquarter of the International Monetary Fund.
ParisIt is the headquarter of the United Nations Educational Scientific and Cultural Organisation (UNESCO).

Question 243

Kolkata Police SI 2019• Full Test

Where is the Indian Forest Research Institute located ?

  1. AOption (a)

    Dehradun

  2. BOption (b)

    Shimla 

  3. COption (c)

    Bhopal 

  4. DOption (d)

    Lucknow

View answer & explanation

Correct answer

Answer: (a)A.

Dehradun

Why this answer is correct

The correct answer is Dehradun. 

Key Points:

  • The Forest Research Institute (FRI) is an institute of the Indian Council of Forestry Research and Education.
  • It is a premier institution in the field of forestry research in India.
  • It is located at Dehradun in Uttarakhand.
  • In 1991, it was declared a deemed university by the University Grants Commission.
  • The Forest Research Institute campus hosts the Indira Gandhi National Forest Academy (IGNFA), the staff college that trains officers selected for the Indian Forest Service (IFS).

Question 244

Kolkata Police SI 2019• Full Test

Cow milk is a rich source of 

  1. AOption (a)

    Vitamin-B

  2. BOption (b)

    Vitamin-D

  3. COption (c)

    Vitamin-A

  4. DOption (d)

    Vitamin-C

View answer & explanation

Correct answer

Answer: (a)A.

Vitamin-B

Why this answer is correct

The correct answer is Vitamin B.

Confusion Points

  • Vitamin B (all Quantity) > Vitamin D

Important Points

  • Cow's Milk is a rich source of high-quality protein, containing all essential amino acids.
  • Whole milk is also a rich source of energy in the form of saturated fats, which can prevent muscle mass from being used for energy.
  • Low-fat milk can provide the benefits of milk while supplying less fat.
  • Cow milk is filled with calcium, vitamin D, phosphorus and magnesium
  • Milk is a good source of thiamin, riboflavin, and vitamin B12.
  • Milk contains small amounts of niacin, pantothenic acid, vitamin B6, vitamin C, and folate and is not considered a major source of these vitamins in the diet.
  • Milk contains fat-soluble vitamins A, D, E, and K.

Question 245

Kolkata Police SI 2019• Full Test

The name Kunjarani Devi is associated with

  1. AOption (a)

    Boxing

  2. BOption (b)

    Weightlifting

  3. COption (c)

    Archery

  4. DOption (d)

    Swimming

View answer & explanation

Correct answer

Answer: (b)B.

Weightlifting

Why this answer is correct

The correct answer is Weightlifting.

  

Key Points 

  • Nameirakpam Kunjarani Devi is the most decorated Indian Sportswoman in Weightlifting, in the category of 48kg.
  • She holds the rank of Commandant in the CRPF and also worked as nodal officer for the sports team in CRPF.
  • She was also awarded Rajiv Gandhi Khel Ratna and Arjuna award for the year 2014.
  • She was also the coach of the Indian Weightlifting in Common Wealth Games 2014 in Glasgow.

Question 246

Kolkata Police SI 2019• Full Test

 The Income Tax in India is

  1. AOption (a)

    Indirect and Progressive

  2. BOption (b)

    Indirect and Proportional

  3. COption (c)

    Direct and Proportional

  4. DOption (d)

    Direct and Progressive

View answer & explanation

Correct answer

Answer: (d)D.

Direct and Progressive

Why this answer is correct

The correct answer is Direct and Progressive. 

Important Points

  • Income tax is a Direct tax.
  • Direct taxes are progressive, because it is possible to help more people who do not earn as much, and at the same time, mobilize resources from those who earn well. This is what makes them progressive.
  • This is the tax that is levied on the annual income or the profits which are directly paid to the government.
  • Everyone who earns any kind of income is liable to pay income tax.
  • A progressive tax imposes a higher rate on the rich than on the poor. It's based on the taxpayer's income or wealth. It's done to help lower-income families pay for basics like shelter, food, and transportation.
  • A progressive tax allows them to spend a larger share of their incomes on the cost of living expenses.
  • Examples of progressive tax include investment income taxes, tax on interest earned, rental earnings, estate tax, and tax credits.

Question 247

Kolkata Police SI 2019• Full Test

 India’s coastline measures

  1. AOption (a)

    5516.6 Kms

  2. BOption (b)

     3316.6 Kms

  3. COption (c)

    7516.6 Kms 

  4. DOption (d)

    4516.6 Kms

View answer & explanation

Correct answer

Answer: (c)C.

7516.6 Kms 

Why this answer is correct

The correct answer is 7516.6 Kms.

 

Important Points

  • India is one of the oldest civilizations in the world with a kaleidoscopic variety and rich cultural heritage.
  • As the 7th largest country in the world, India stands apart from the rest of Asia, marked off as it is by mountains and the sea, which give the country a distinct geographical entity.
  • Bounded by the Great Himalayas in the north, it stretches southwards and at the Tropic of Cancer, tapers off into the Indian Ocean between the Bay of Bengal on the east and the Arabian Sea on the west.
  • Lying entirely in the northern hemisphere, the mainland extends between latitudes 8° 4' and 37° 6' north, longitudes 68° 7' and 97° 25' east and measures about 3,214 km from north to south between the extreme latitudes and about 2,933 km from east to west between the extreme longitudes.
  • It has a land frontier of about 15,200 km.
  • The total length of the coastline of the mainland, Lakshadweep Islands, and Andaman & Nicobar Islands are 7,516.6 km.

Question 248

Kolkata Police SI 2019• Full Test

Which one of the following is an example of nitrogen fixing bacteria?

  1. AOption (a)

    Eukaryotic 

  2. BOption (b)

    Rhizobium

  3. COption (c)

    Azotobacter

  4. DOption (d)

    Prokaryotic

View answer & explanation

Correct answer

Answer: (b)B.

Rhizobium

Why this answer is correct

The correct answer is  Rhizobium.

  • Rhizobium is of great ecological and agronomic importance, due to its ability to fix large amounts of atmospheric nitrogen.
  • This is why Rhizobium is called a Nitrogen Fixation agent.

 

Important Points

Eukaryotic- The organism has a well-defined nucleus in its structure called Eukaryotic. - They are called Multicellular organisms. - Examples- Humans, Animals.
Azotobacter- It is a free-living diazotrophic bacteria whose resting stage is a cyst. - It is primarily found in neutral to alkaline soils.
Prokaryotic- The organism which not having a well-defined nucleus called Prokaryotic. - They are also called s.Unicellular organisms. - Examples- Ameoba, Paramecium.

Question 249

Kolkata Police SI 2019• Full Test

The pigment that helps in photosynthesis

  1. AOption (a)

    Chlorophyll

  2. BOption (b)

    Leucoplasts

  3. COption (c)

    Chloroplasts

  4. DOption (d)

    Chromatoplasts

View answer & explanation

Correct answer

Answer: (a)A.

Chlorophyll

Why this answer is correct

The correct answer is Chlorophyll.

Key Points

  • Chlorophyll is a pigment that gives plants their green color, and it helps plants create their own food through Photosynthesis.
  • There are many different types of pigments in nature, but chlorophyll is unique in its ability to enable plants to absorb the energy they need to build tissues.
  • Chlorophyll is located in a plant’s chloroplast which are tiny structures in a plant’s cells, where photosynthesis takes place.
  • Chlorophyll’s job in a plant is to absorb light—usually sunlight. The plant uses the stored energy to convert carbon dioxide (absorbed from the air) and water into glucose, a type of sugar.
  • Plant uses glucose together with nutrients taken from the soil to make new leaves and other plant parts.
  • The process of photosynthesis produces oxygen, which is released by the plant into the air.
  • Chlorophyll gives plants their green color because it does not absorb the green wavelengths of white light. That particular light wavelength is reflected from the plant, so it appears green.

Question 250

Kolkata Police SI 2019• Full Test

The World’s driest desert is

  1. AOption (a)

    Gobi

  2. BOption (b)

    Thar

  3. COption (c)

    Atacama

  4. DOption (d)

    Sahara 

View answer & explanation

Correct answer

Answer: (c)C.

Atacama

Why this answer is correct

The correct answer is the Atacama Desert.

  • Chile's Atacama Desert, the driest nonpolar desert on Earth, stretches across a roughly 600-mile tract of land wedged between the coastal Cordillera de la Costa mountain range and the Andes Mountains.
  • The Atacama is stuffed in the shadow of the snow-capped Andes Mountains, which block rainfall from the east. To the west, the upwelling of cold water from deep in the Pacific Ocean promotes atmospheric conditions that hamper the evaporation of seawater and prevent the formation of clouds and rain.
  • Temperature is comparatively mild throughout the year.
  • The average temperature in the desert is about 18 degrees C.

 

​

Important Points​

Gobi- The Gobi Desert is Asia’s largest and most iconic, covering over 1600km of China and Mongolia. - It has long been a region that acted as a natural barrier between the various countries of the area, limiting the movement of troops, ordnance, and supplies during times of war. Occasionally, armies would take on the desert and win.
Thar- The Thar Desert, also called the Great Indian Desert, arid region of rolling sandhills on the Indian subcontinent. - It is located partly in Rajasthan state, northwestern India, and partly in Punjab and Sindh (Sind) provinces, eastern Pakistan. - The Thar Desert covers some 77,000 square miles of territory. - It is bordered by the irrigated Indus River plain to the west, the Punjab Plain to the north and northeast, the Aravalli Range to the southeast, and the Rann of Kachchh to the south.