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Q1

Consider the following statements:

A superconductor is a material

1. offers no resistance to the passage of electrical current at room temperature only.

2. which is sufficiently weak and external magnetic fields will not penetrate but remain at its surface.

Which of the statements given above is/are correct?

 

Q2

With reference to Graphene, Consider the following applications:

1. Sub-zero temperature protection jackets

2. Filtration of water

3. Airplane manufacturing

4. Detection of Amyotrophic Lateral Sclerosis (ALS)

Which of the following can be the possible applications of graphene?

Q3

With reference to “E-bombs”, consider the following statements:

1. They use strong, superconductor-derived magnetic fields to create a fast, high-intensity electromagnetic pulse.

2. They were first used by the United States of America.

Which of the statements given above is/are correct?

Q4

Consider the following statements:

1. High-Temperature Super Conductors are those superconductors whose critical temperature is above 30 Kelvin.

2. Liquid helium is an example of High-Temperature Super Conductors.

Which of the statements given above is/are correct?

Q5

Why is Borosilicate glass superior to soda-lime glass?

1. It has a much higher proportion of silicon dioxide in comparison to regular soda-lime glass.

2. It expands more than twice as fast when exposed to heat.

Select the correct answer using the code given below:

Q6

In which of the following applications Superconductors are used?

1. Maglev trains

2. Making electricity generation more efficient

3. Removal of land mines

4. MRI or Medical imaging

Select the correct answer using the code given below:

Q7

With reference to superconducting quantum interference device, consider the following statements:

1. It is a very sensitive magnetometer used to measure extremely subtle magnetic fields.

2. So far, India has not been able to develop this technology.

Which of the statements given above is/are correct?

Q8

The term ‘SCOJTEX-2019’ sometimes mentioned in the news in the context of the affairs of

Q9

Joint Field Training Exercise DUSTLIK-2019 conducted between which of the following countries?

Q10

Consider the following pairs

         Fighter Jet                       Manufacturer

  1. F-35 Lightning               -      Boeing
  2. Rafale                             -      Dassault Aviation
  3. F-16 Fighting Falcons    -      Lockheed Martin
  4. Mig-35                           -      United Aircraft Corporation

Which of the pair given above is/are correctly matched?

Q11

Consider the following statement

  1. Agni III and Agni IV is a Medium -range Ballistic Missile.
  2. Agni V and Agni VI is an Intercontinental Ballistic Missile.

Which of the statement given above is/are correct?

Q12

With reference to the Tiger Triumph Exercise, Consider the following statement

  1. It is maiden India-US joint Navy Humanitarian Assistance and Disaster Relief (HADR) Exercise.
  2. TIGER TRIUMPH Exercise is scheduled on the Western seaboard.
  3. Indian Naval ships Jalashwa, Airavat and Sandhayak participated in the exercise.
Q13

Consider the following statement in the context of Samudra Shakti Exercise

  1. Bilateral maritime exercise between India Navy and Malaysia Navy.
  2. The Harbour Phase of Samudra Shakti exercise included professional interactions in the form of Subject Matter Expert Exchanges (SMEE).

Which of the statement given above is/are Incorrect?

Q14

Consider the following statements about the Nirbhay Missile

  1. It is an all-weather, high-cost, short-range ballistic missile.
  2. It is capable of carrying conventional and nuclear warheads with subsonic speed.
  3. This missile can be launched from multiple platforms on land, sea air.

Which of the statement given above is/are correct?

Q15

With reference to ‘Organisation for the Prohibition of Chemical Weapons(OPCW)’, Consider the following statements

  1. I is an organisation of European Union in working relations with NATO and WHO.
  2. It monitors chemical industry to prevent new weapons from emerging.

Which of the statement given above is/are correct?

 

Q1.

Consider the following statements:

A superconductor is a material

1. offers no resistance to the passage of electrical current at room temperature only.

2. which is sufficiently weak and external magnetic fields will not penetrate but remain at its surface.

Which of the statements given above is/are correct?

 

a) 1 only
b) 2 only
c) Both 1 and 2
d) Neither 1 nor 2
Solution : b)
Unattempted. Explanation :-

Exp) Statement 1 is incorrect. A superconductor is a material, which conducts electricity with no resistance. When resistance falls to zero, a current can circulate inside the material without any dissipation of energy.

Statement 2 is correct. Provided they are sufficiently weak, external magnetic fields will not penetrate the superconductor, but remain at its surface. This field expulsion phenomenon is known as the Meissner effect, after the physicist who first observed it in 1933.

Source)

Chapter 15; page number 350

https://home.cern/science/engineering/superconductivity

Q2.

With reference to Graphene, Consider the following applications:

1. Sub-zero temperature protection jackets

2. Filtration of water

3. Airplane manufacturing

4. Detection of Amyotrophic Lateral Sclerosis (ALS)

Which of the following can be the possible applications of graphene?

a) 1, 2 and 4 only
b) 2, 3 and 4 only
c) 1, 2 and 3 only
d) 1, 2, 3 and 4
Solution : b)
Unattempted. Explanation :-

Exp) Statement 2, 3 and 4 are correct. Graphene is a recently discovered material made from honeycomb sheets of carbon just one atom thick. It is a two-dimensional form (allotrope) of carbon that consists of a single layer of carbon atoms arranged in a hexagonal lattice. Graphene has been termed as the wonder material and multiple uses of this material have been discovered.

Some uses are Water filtration, manufacturing of strong and lighter materials like airplanes, weapons etc. Graphene is a good conductor of electricity and batteries are being produced which could be charged easily and faster. Making LED lights more efficient and longer-lasting.

Statement 1 is incorrect. Graphene is a very good conductor of heat and electricity thus making jackets would not match its applications. Clothes in sub-zero temperatures need to be bad conductors of heat so that body het does not dissipate.

Amyotrophic Lateral Sclerosis (ALS) is a progressive brain disorder for which there is currently “no objective diagnostic test. Stephen Hawking had ALS. The elasticity of Graphene produces micro vibrations, such vibrations of nuclear cells can be observed on graphene using raman spectroscopy and thus ALS could be diagnosed.

Source)

https://www.thehindu.com/sci-tech/now-graphene-can-detect braindisorders/article25752276.ece

https://www.graphene-info.com/graphene-applications

https://physicsworld.com/a/squeezed-graphene-becomes-a-superconductor/

Q3.

With reference to “E-bombs”, consider the following statements:

1. They use strong, superconductor-derived magnetic fields to create a fast, high-intensity electromagnetic pulse.

2. They were first used by the United States of America.

Which of the statements given above is/are correct?

a) 1 only
b) 2 only
c) Both 1 and 2
d) Neither 1 nor 2
Solution : c)
Unattempted. Explanation :-

Exp) “E-bombs” are devices that make use of strong, superconductor-derived magnetic fields to create a fast, high-intensity electromagnetic pulse that can disable an enemy’s electronic equipment. These devices were first used in wartime in March 2003 when USA forces attacked an Iraqi broadcast facility. They can release two billion watts of energy at once.

Source)

https://spectrum.ieee.org/riskfactor/aerospace/military/ebombs-what-is-the-threat

https://www.rsc.org/Education/Teachers/Resources/Inspirational/resources/4.5.2.pdf

 

 

Q4.

Consider the following statements:

1. High-Temperature Super Conductors are those superconductors whose critical temperature is above 30 Kelvin.

2. Liquid helium is an example of High-Temperature Super Conductors.

Which of the statements given above is/are correct?

a) 1 only
b) 2 only
c) Both 1 and 2
d) Neither 1 nor 2
Solution : a)
Unattempted. Explanation :-

Exp) Statement 1 is correct. High Temperature Super Conductors are the super conductors whose critical temperature is above 30 Kelvin. Hydrogen sulphide is one of such High Temperature Super Conductors. It is the highest temperature super conductor known till date (203 Kelvin).

The Low Temperature Super Conductors whose critical temperature is below 30 Kelvin. Example: Liquid Helium. Hence, statement 2 is incorrect.

Critical temperature is the temperature of a material, at and above which vapour of the element cannot be liquefied.

Source)

Chapter 15; page number 351

 

Q5.

Why is Borosilicate glass superior to soda-lime glass?

1. It has a much higher proportion of silicon dioxide in comparison to regular soda-lime glass.

2. It expands more than twice as fast when exposed to heat.

Select the correct answer using the code given below:

a) 1 only
b) 2 only
c) Both 1 and 2
d) Neither 1 nor 2
Solution : a)
Unattempted. Explanation :-

Exp) Statement 1 is correct. Borosilicate glass has a much higher proportion of silicon dioxide in comparison to regular soda lime glass (80% vs. 69%), which makes it even less susceptible to fractures.

Borosilicate glass is a type of glass that contains boron trioxide which allows for a very low coefficient of thermal expansion. This means it will not crack under extreme temperature changes like regular glass. Its durability has made it the glass of choice for high-end restaurants, laboratories and wineries. Hence, statement 2 is incorrect.

Borosilicate glass does not soften below 700-800°C and requires oxygennatural gas flame for working. Natural gas mixed with oxygen is burnt to get the oxygen-natural gas flame. Coefficient of expansion of this glass is low and apparatus made of this glass can withstand sudden changes in temperature.

Source)

http://ncert.nic.in/ncerts/l/kelm202.pdf

https://shopkablo.com/blogs/the-reformist/what-is-borosilicate-glass

Q6.

In which of the following applications Superconductors are used?

1. Maglev trains

2. Making electricity generation more efficient

3. Removal of land mines

4. MRI or Medical imaging

Select the correct answer using the code given below:

a) 4 only
b) 2 and 3 only
c) 1 and 4 only
d) 1, 2, 3 and 4
Solution : d)
Unattempted. Explanation :-

Exp) Superconductors are used in the following applications:

Maglev (magnetic levitation) trains. These work because a superconductor repels a magnetic field so a magnet will float above a superconductor – this virtually eliminates the friction between the train and the track. However, there are safety concerns about the strong magnetic fields used as these could be a risk to human health.

Large hadron collider or particle accelerator. This use of superconductors was developed at the Rutherford Appleton Laboratory in Oxfordshire, UK in the 1960s.  Superconductors are used to make extremely powerful electromagnets to accelerate charged particles very fast (to near the speed of light)

SQUIDs (Superconducting QUantum Interference Devices) are used to detect even the weakest magnetic field. They are used in mine detection equipment to help in the removal of land mines.

The USA is developing “E-bombs”. These are devices that make use of strong, superconductor-derived magnetic fields to create a fast, high-intensity electromagnetic pulse that can disable an enemy’s electronic equipment.

The following uses of superconductors are under development:

● Making electricity generation more efficient

● Very fast computing

Source)

Chapter 15; page number 351

https://www.rsc.org/Education/Teachers/Resources/Inspirational/resources/4.5.2.pdf

Q7.

With reference to superconducting quantum interference device, consider the following statements:

1. It is a very sensitive magnetometer used to measure extremely subtle magnetic fields.

2. So far, India has not been able to develop this technology.

Which of the statements given above is/are correct?

a) 1 only
b) 2 only
c) Both 1 and 2
d) Neither 1 nor 2
Solution : a)
Unattempted. Explanation :-

Exp) Statement 1 is correct. SQUIDs (Superconducting QUantum Interference Devices) are used to detect even the weakest magnetic field. They are used in mine detection equipment to help in the removal of land mines.

Statement 2 is incorrect. The scientists of National Physical Laboratory in Delhi has developed a new SQUID at liquid nitrogen temp (77k). This is known to be one of the high temperature side so far as superconductors are concerned.

Source)

Chapter 15; page number 351

Q8.

The term ‘SCOJTEX-2019’ sometimes mentioned in the news in the context of the affairs of

a) Association of Southeast Asian Nations
b) European Union
c) Shanghai Cooperation Organisation
d) Gulf Cooperation Council
Solution : c)
Unattempted. Explanation :-

Explanation:

  • The SCOJTEX-2019 or Shanghai Cooperation Organization (SCO) Joint Exercise on Urban Earthquake Search & Rescue -2019 Hosted by NDRF in New Delhi. Aim to rehearse the disaster response mechanism, share knowledge, experience, technology & also for mutual coordination, etc. The participants of all 08 member countries namely China, India, Kazakhstan, Kyrgyzstan, Pakistan, Russia, Tajikistan and Uzbekistan shall be participating in this exercise. The main focus shall be to test the region’s preparedness and resilience towards effective activation of Intergovernmental interaction for immediate response.

 

Q9.

Joint Field Training Exercise DUSTLIK-2019 conducted between which of the following countries?

a) India and Israel
b) India and Azerbaijan
c) India and Ukraine
d) India and Uzbekistan
Solution : d)
Unattempted. Explanation :-

Explanation:

  • The inaugural Indo-Uzbekistan Joint Field Training Exercise (FTX)-2019, Exercise DUSTLIK-2019 culminated on 13 November 2019 after 10 days of joint training with Uzbekistan Army. The joint exercise was focused on counter-insurgency and counter-terrorism operations in the urban scene as well as sharing of expertise on skills at arms, both combat shooting and experiences in counter-insurgency and counter-terrorism. The exercise also provided an opportunity to armies of all nations for greater cultural understanding, sharing experiences and strengthening mutual trust and cooperation.
Q10.

Consider the following pairs

         Fighter Jet                       Manufacturer

  1. F-35 Lightning               -      Boeing
  2. Rafale                             -      Dassault Aviation
  3. F-16 Fighting Falcons    -      Lockheed Martin
  4. Mig-35                           -      United Aircraft Corporation

Which of the pair given above is/are correctly matched?

a) 1 and 2 only
b) 2 and 3 only
c) 1 and 3 only
d) 2 and 4 only
Solution : d)
Unattempted. Explanation :-

Explanation:

  • Pair 2 and 4 is Correct: Rafale Fighter Aircraft is a French twin-engine, canard delta wing, multirole fighter aircraft designed and built by Dassault Aviation. The Mikoyan MiG-35 is a Russian multirole fighter that was designed by Mikoyan, a division of the United Aircraft Corporation (UAC).
  • Pair 1 and 3 is Incorrect: The Lockheed Martin F-35 Lightning II is a family of single-seat, single-engine, all-weather, stealth, fifth-generation, multirole combat aircraft, designed for ground-attack and air-superiority missions. F-16 Fighting Falcon is a single-engine supersonic multirole fighter aircraft originally developed by Lockheed Martin.
Q11.

Consider the following statement

  1. Agni III and Agni IV is a Medium -range Ballistic Missile.
  2. Agni V and Agni VI is an Intercontinental Ballistic Missile.

Which of the statement given above is/are correct?

a) 1 only
b) 2 only
c) Both 1 and 2
d) Neither 1 nor 2
Solution : b)
Unattempted. Explanation :-

Explanation:

  • Statement 1 is Incorrect: A medium-range ballistic missile (MRBM) is a type of ballistic missile with medium range. A medium-range missile is defined by having a maximum range of between 1,000 and 3,000 kilometres. Agni-III has capability to cover the range of 3,500 km and can have a warhead of 1.5 tonnes. Agni-IV is capable to cover the range of 2,500-3,500 km.
  • Statement 2 is Correct: An Inter Continental Ballistic Missile (ICBM) is a guided ballistic missile with a minimum range of 5,500 kilometres (3,400 mi) primarily designed for nuclear weapons delivery. Agni V is capable of striking a target more than 5,000 kilometres with nuclear warhead carrying capacity of more than 1 tonne. Agni-VI will be able to strike at a target of 6,000-10,000 km.

 

Q12.

With reference to the Tiger Triumph Exercise, Consider the following statement

  1. It is maiden India-US joint Navy Humanitarian Assistance and Disaster Relief (HADR) Exercise.
  2. TIGER TRIUMPH Exercise is scheduled on the Western seaboard.
  3. Indian Naval ships Jalashwa, Airavat and Sandhayak participated in the exercise.
a) 1 only
b) 1 and 2 only
c) 2 only
d) 2 and 3 only
Solution : b)
Unattempted. Explanation :-

Explanation:

  • Statement 1 is Incorrect: The first-ever India-US joint tri-services Humanitarian Assistance and Disaster Relief (HADR) exercise, named ‘Tiger Triumph’, held on 13th-21st November 2019.
  • Statement 2 is Incorrect: The exercise will be conducted off Visakhapatnam and Kakinada coasts(Eastern Coast) in Andhra Pradesh.
  • Statement 3 is correct: Indian Naval ships Jalashwa, Airavat and Sandhayak, Indian Army troops from 19 Madras and 7 Guards, and Indian Air Force MI-17 helicopters and Rapid Action Medical Team (RAMT) would be part of the Tiger Triumph exercise.

 

Q13.

Consider the following statement in the context of Samudra Shakti Exercise

  1. Bilateral maritime exercise between India Navy and Malaysia Navy.
  2. The Harbour Phase of Samudra Shakti exercise included professional interactions in the form of Subject Matter Expert Exchanges (SMEE).

Which of the statement given above is/are Incorrect?

a) 1 only
b) 2 only
c) Both 1 and 2
d) Neither 1 nor 2
Solution : a)
Unattempted. Explanation :-

Explanation:

  • Statement 1 is Incorrect: Bilateral Maritime Exercise ‘Samudra Shakti 2019’ conducted in the Bay of Bengal between the Indian Navy and the Indonesian Navy.
  • Statement 2 is Correct: The Harbour Phase which was conducted on 04 and 05 November included professional interactions in the form of Subject Matter Expert Exchanges (SMEE), cross deck visits, simulator drills, planning conferences, sports fixtures and social interactions.
Q14.

Consider the following statements about the Nirbhay Missile

  1. It is an all-weather, high-cost, short-range ballistic missile.
  2. It is capable of carrying conventional and nuclear warheads with subsonic speed.
  3. This missile can be launched from multiple platforms on land, sea air.

Which of the statement given above is/are correct?

a) 1 only
b) 1 and 2 only
c) 2 and 3 only
d) 1, 2 and 3
Solution : c)
Unattempted. Explanation :-

Explanation:

  • Statement 1 is Incorrect and Statement 2 and 3 is Correct: Nirbhay is India's first indigenously designed and developed long-range, all-weather subsonic cruise missile.It is designed and developed in India by the Defence Research and Development Organisation (DRDO). It is a nuclear-capable cruise missile and can carry warheads of up to 300 kg which can be launched from multiple platforms like sea, land, aircraft and underwater.
Q15.

With reference to ‘Organisation for the Prohibition of Chemical Weapons(OPCW)’, Consider the following statements

  1. I is an organisation of European Union in working relations with NATO and WHO.
  2. It monitors chemical industry to prevent new weapons from emerging.

Which of the statement given above is/are correct?

 

a) 1 only
b) 2 only
c) Both 1 and 2
d) Neither 1 nor 2
Solution : b)
Unattempted. Explanation :-

Explanation:

  • Statement 1 is Incorrect and Statement 2 is Correct: OPCW is an intergovernmental organisation, headquartered in the Hague, Netherlands. The organisation promotes, administers and verifies adherence to the Convention on the Prohibition of the Development, Production, Stockpiling and Use of Chemical Weapons and on their Destruction (CWC). This convention outlaws the production, stockpiling, and use of chemical weapons and their precursors.