Question Discussion & Solution

The correct answer is Rakesh Sharma.

Key Points

• Rakesh Sharma is the first Indian to enter space.
  • He was selected as a cosmonaut for a joint Soviet-Indian spaceflight in 1982.
  • He made history by becoming the first Indian to travel to space in 1984.
  • He flew on Soyuz T-11 with commander Yury Malyshev and flight engineer Gennady Strekalov, to the space station Salyut 7 on 3^rd April 1984.
  • Rakesh Sharma and his crewmates landed in Kazakhstan on 11^th April 1987 after the successful completion of the mission.
  • He is the only Indian citizen to travel in space.

Additional Information

• Kalpana Chawla was the first Indian-origin woman to enter space.
  • She was killed in the space shuttle Columbia disaster on 1st February 2003.
• Sunita Williams is the second Indian-origin woman to enter space.
  • The first marathon in space was run by Sunita Williams.
• Yuri Gagarin is the first man to enter space.
• Ravish Malhotra was an Air Force test pilot in India. 
  • He served as a backup for Rakesh Sharma on the Soyuz T-11 mission.

The correct answer is Sri Lanka, Maldives.

Key Points

• The 15th edition of the Maldives, India, and Sri Lanka biennial trilateral exercise 'Dosti', which began in the Maldives on 20 November 2021, concluded on 24 November 2021.
• Indian Coast Guard vessels, the ICGS Vajra and ICGS Apoorva participated in the exercise from the Indian side.
• The year 2021 marked 30 years since the initiation of the exercise.
• Exercise Dosti was initiated in 1991, between the Indian and Maldives Coast Guard.
• Sri Lanka joined the exercise for the first time in 2012.

Additional Information

•  The Chief of the Naval Staff is Admiral R Hari Kumar.
• The headquarters of the Indian Navy is Integrated Defence Headquarters, Ministry of Defence, New Delhi.
• Below are the list of Exercises and Participating Nations: 

  Military Exercise	Participating Countries
  Ajeya Warrior	India and United Kingdom
  Sampriti	India and Bangladesh
  Vajra Prahar	India and US
  Garuda Shakti	India and Indonesia
  Surya Kiran	India and Nepal
  Hand in Hand Exercise	India and China

The relation is:

1) Sports : Ground → Sports are organised in ground.

2) Rubber : Eraser → Rubber is used to erase writings on paper.

3) Cinema : Screen → Cinema is shown on screen

4) Drama : Stage → Drama is played on stage.

Hence, Rubber : Eraser is the correct answer.

The correct answer is Cybersecurity.

Key Points

• Cryptography is a specialized area of Cybersecurity.
• Cryptography is also defined as the study of secure communications techniques that allow only the sender and intended recipient of a message to view its contents.
• It covers the obfuscation of information in images using techniques such as microdots or merging.
• It is used to protect the written documents.
• The main purpose of cryptography appears to be making content and images undecipherable, the true goal of cryptography in an information technology context is to ensure the confidentiality and integrity of any information technology system.

The correct answer is Concave lens.

Key Points

• To treat the eye disease known as myopia or nearsightedness we use the Concave Lens.
• A concave lens is a category of lens that deviates a straight light beam coming from the origin to a diminished, upright, virtual image.
• It can construct both real and virtual images.
• The convex lens is a lens that tends to meet at a point of rays of light that convey parallel to its principal axis which is comparatively thick across the middle and thin at the lower and upper edges.
• A convex lens is used in cameras, correction of Hyperopia, etc.
• Bifocal lenses hold two different prescriptions, an upper part to allow for distance vision and an additional power on the bottom part of the lens to help in close-up focus.
• A bifocal lens is used in people suffering from presbyopia, myopia, hyperopia, and astigmatism.
• The result is eyesight lucidity at both distance and near with one pair of glasses.
• A Compound lens is simple lenses made on a general axis usually in close proximity and often cemented with each other.

Additional Information