GATE (Graduate Aptitude Test in Engineering) is a highly competitive examination conducted for various engineering disciplines, including Mechanical Engineering (ME). Due to the ongoing COVID-19 pandemic, there have been certain changes in the marking scheme for GATE ME. Let's explore these changes in detail:

1. Introduction:
GATE ME is a computer-based examination consisting of multiple-choice questions (MCQs) and numerical answer type (NAT) questions. The paper is divided into two sections: General Aptitude and Subject-specific questions. The total duration of the exam is 3 hours.

2. Changes in the Marking Scheme:
The marking scheme for GATE ME remains the same as previous years, with the following key points to consider:

2.1. MCQs:
- For MCQs, there are negative markings for incorrect answers.
- Each correct answer carries 1 or 2 marks, depending on the question.
- For every incorrect answer, 1/3rd or 2/3rd of the marks (depending on the question) will be deducted.
- Unanswered or unattempted questions do not have any negative marking.

2.2. NAT Questions:
- Unlike MCQs, NAT questions do not have any negative marking for incorrect answers.
- These questions require the candidates to enter the numerical value as the answer.
- The answer is evaluated based on the accuracy of the value entered by the candidate.
- Partial credit may be awarded for answers within a certain range, if specified in the question.

3. Impact of COVID-19:
The COVID-19 pandemic has resulted in certain changes and precautions in the conduct of the GATE ME examination:

3.1. Social Distancing:
- The examination centers will ensure social distancing norms are followed.
- The number of candidates per session may be reduced to maintain adequate distancing.

3.2. Safety Measures:
- Candidates and staff will be required to wear face masks during the examination.
- Hand sanitizers will be provided at the centers.
- Thermal screening and other safety protocols will be implemented.

3.3. Increased Test Centers:
- To accommodate the candidates while adhering to social distancing norms, additional test centers may be set up.

In conclusion, the marking scheme for GATE ME remains unchanged, with negative marking for MCQs and no negative marking for NAT questions. However, due to the COVID-19 pandemic, certain precautions and safety measures are being implemented at the examination centers to ensure the well-being of the candidates and staff.