UPSC QUESTIONS
UPSC Previous Years (Prelims & Mains) Questions
1 .
Consider the following statements :
 
  1. The Governor of the Reserve Bank of India (RBI) is appointed by the Central Government.
  2. Certain provisions in the Constitution of India give the Central Government the right to issue directions to the RBI in public interest.
  3. The Governor of the RBI draws his power from the RBI Act.
 
Which of the above statements are correct?
A)
1 and 2 only
B)
2 and 3 only
C)
1 and 3 only
D)
1, 2 and 3

Correct Answer : Option (C) - 1 and 3 only

Note :

* The Reserve Bank of India was established on April 1, 1935 in accordance with the provisions of the Reserve Bank of India Act, 1934.

* Though originally privately owned, since nationalization in 1949, the Reserve Bank is fully owned by the Government of India.

* The RBI’s affairs are governed by a central board of directors. The board is appointed by the Government of India in line with the Reserve Bank of India Act.

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Year :
Category : General Studies
A)
European Central Bank
B)
International Monetary Fund
C)
International Bank for Reconstruction and Development
D)
Organization for Economic Cooperation and Development

Correct Answer : Option (B) - International Monetary Fund

Note :

* It is a semiannual report by the International Monetary Fund (IMF).
* It assesses the stability of global financial markets and emerging-market financing with a primary focus on current conditions, especially financial and structural imbalances, that could risk an upset in global financial stability and access to financing by emerging-market countries.
* It is released twice per year, in April and October.
* GFSR replaced two previous reports by the IMF, the annual International Capital Markets Report and the quarterly Emerging Market Financing Report.

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Year : 2016
Category : General Studies
A)
Beas and Chenab only
B)
Beas and Ravi only
C)
Chenab, Ravi and Satluj only
D)
Beas, Chenab, Ravi, Satluj and Yamuna

Correct Answer : Option (D) - Beas, Chenab, Ravi, Satluj and Yamuna

Note : Himachal Pradesh provides water to both the Indus and Ganges basins. The drainage systems of the region are the Chenab, the Ravi, the Beas, the Sutlej and the Yamuna. These rivers are perennial and are fed by snow and rainfall. They are protected by an extensive cover of natural vegetation.

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Year : 2010
Category : General Studies
A)
Chenab
B)
Jhelum
C)
Ravi
D)
Sutlej

Correct Answer : Option (D) - Sutlej

Note : The Jhelum joins the Chenab near Jhang in Pakistan. The Ravi joins the Chenab near Sarai Sidhu. Satluj is joined by the Chenab in Pakistan. Thus, Satluj receives the collective drainage of the Ravi, Chenab and Jhelum rivers. It joins the Indus a few kilometres above Mithankot. 

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Year :
Category : General Studies
A)
large number of people remain unemployed
B)
alternative employment is not available
C)
marginal productivity of labour is zero
D)
productivity of workers is low

Correct Answer : Option (C) - marginal productivity of labour is zero

Note : An economy demonstrates disguised unemployment when productivity is low and too many workers are filling too few jobs.

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Year : 2013
Category : General Studies
A)
it is dipolar in nature
B)
it is a good conductor of heat
C)
it has high value of specific heat
D)
it is an oxide of hydrogen

Correct Answer : Option (A) - it is dipolar in nature

Note :

Water is called the universal solvent because it is capable of dissolving more substances than any other liquid. Water can dissolve more substances than any other liquid because it is dipolar. Hence, Option A is correct.
 
Water molecules have a polar arrangement of oxygen and hydrogen atoms — one side (hydrogen) has a positive electrical charge and the other side (oxygen) had a negative charge.
 
This allows the water molecule to become attracted to many other different types of molecules.
 
Water can become so heavily attracted to a different compound, like salt (NaCl), that it can disrupt the attractive forces that hold the sodium and chloride in the salt compound together and, thus, dissolve it.
 
Because of its polarity, water can form electrostatic interactions (charge-based attractions) with other polar molecules and ions.

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Year : 2021
Category : General Studies
7 .
With reference to street-lighting, how do sodium lamps differ from LED lamps?

  (1) Sodium Lamps produce light in 360 degrees but it is not so in the case of LED lamps.
  (2) As street-lights, sodium lamps have longer life span than LED lamps.
  (3) The spectrum of visible light from sodium lamps is almost monochromatic while LED lamps offer significant colour advantages in street-lighting.

Select the correct answer using the codes given below :
A)
3 only
B)
2 only
C)
1 and 3 only
D)
1, 2 and 3

Correct Answer : Option (C) - 1 and 3 only

Note :

LED Chips are mounted on a circuit board, so depending on the configuration, usually 180 degrees. This is typically an advantage because light is usually desired over a target area (rather than all 360 degrees around the bulb). So, statement 1 is correct.
 
Sodium lamps lifespan is around 14,000 hours. LEDs last longer than any light source commercially available on the market. LEDs are typically 40,000 - 60,000 Hours. So, statement 2 is not correct.

High-pressure sodium lamps (HPS) emit a broader spectrum of light than the low-pressure lamps, but they still have poorer color rendering than other types of lamps. Low-pressure sodium (LPS) lamps only give monochromatic yellow light and so inhibit color vision at night. LPS lamps in particular are monochromatic which means that the objects illuminated by them appear shadowy black rather than the color you would see during daylight. HPS lamps are better but are still surpassed by virtually every other light on the market. LEDs can be designed to generate the entire spectrum of visible light colors without having to use the traditional color filters required by traditional lighting solutions. So, statement 3 is correct.

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Year : 2021
Category : General Studies
A)
genes introduced in the genetically modified plants
B)
development of India's own satellite navigation system
C)
radio collars for wildlife tracking
D)
spread of viral diseases

Correct Answer : Option (D) - spread of viral diseases

Note :

Angiotensin-converting enzyme 2 (ACE2) is a protein on the surface of many cell types. It is an enzyme that generates small proteins – by cutting up the larger protein angiotensinogen –that then go on to regulate functions in the cell.

Using the spike-like protein on its surface, the SARS-CoV-2 virus binds to ACE2. Hence, ACE2 acts as a cellular doorway that is a receptor for the virus that causes COVID-19. The spike protein of SARS-CoV-2 can adopt at least 10 structural states in order to cling onto angiotensin-converting enzyme 2 (ACE2) receptor cells in humans. 

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Year : 2021
Category : General Studies
A)
Low-density polyethylene
B)
Polycarbonate
C)
Polyethylene telephthalate
D)
Polyvinyl chloride

Correct Answer : Option (B) - Polycarbonate

Note : Bisphenol A (BPA) is a chemical produced in large quantities for use primarily in the production of polycarbonate plastics and epoxy resins. Polycarbonate plastics have many applications including use in some food and drink packaging, e.g., water and infant bottles, compact discs, impact-resistant safety equipment, and medical devices.

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Year : 2021
Category : General Studies
A)
Food preservatives
B)
Fruit-ripening substances
C)
Reused plastic containers
D)
Toiletries

Correct Answer : Option (D) - Toiletries

Note : Triclosan is a lipophilic compound with antimicrobial properties. It is an ingredient added to many consumer products intended to reduce or prevent bacterial contamination. It is added to some antibacterial soaps and body washes, toothpastes, and some cosmetics. It also can be found in clothing, kitchenware, furniture, and toys.

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Year : 2021
Category : General Studies

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