Question Discussion & Solution

The correct answer is option 1.

Concept:

When a process requests for the resource that is been held another process that needs another resource to continue, but is been held by the first process, then it is called a deadlock.

There are 4 conditions necessary for the occurrence of a deadlock.

Mutual Exclusion:

Only one process can hold a resource at a time. In other words, if a process P1 is utilizing a resource R at a specific moment in time, another process P2 cannot hold or utilize the same resource R at that same moment. Process P2 can make a request for that resource R, but it cannot use it at the same time as process P1.

Hold and Wait:

A process can hold several resources at the same time while also requesting resources from another process. A process P1, for example, can have two resources R1 and R2 while also requesting a resource R3 that is currently owned by process P2.

No preemption:

A resource cannot be forcibly removed from a process by another process. If a process P1 is using a resource R, for example, another process P2 cannot take that resource by force. If that's the case, what's the point of using different scheduling algorithms?  Process P2 can make a request for the resource R and then wait for process P1 to liberate it.

Circular Wait:

The first process is waiting for the resource held by the second process, and the second process is waiting for the resource held by the third process, and so on. Finally, the last process is waiting for the first process's resource. As a result, each process is waiting for the other to release the resource, with no one releasing their own. Everyone is waiting for the resource to arrive. This is referred to as a circular wait.

Hence the correct answer is Mutual Exclusion, Hold and Wait, No Preemption, and Circular Wait.

The correct answer is In 1994.

• In 1994, the state road policy was announced in Rajasthan.

Key Points

• State road policy, Rajasthan:
  • Rajasthan was the first state in the country to announce a State Road Policy in 1994.
  • The policy formulated the road map to connects places of religious and tourism importance and railway stations.
  • Organizations working in Rajasthan for the development of roads are Rajasthan State Road Development & Construction Corporation Limited, National Highway Authority of India, and Rajasthan State Road Development Corporation.
  • Pratap Singh Khachariyawas is the Transport Minister in the Government of Rajasthan.

Additional Information

• Nitin Gadkari is the Minister for Road Transport & Highways in the Union Government.
  • He is also the Minister of Micro, Small and Medium Enterprises.

The pattern here is,

The Lungs is a part of the body’s Respiratory system.

Similarly, Heart is a part of the body’s Circulatory System.

The correct answer is Thymine and Cytosine.

Key Points

• The pyrimidines in DNA are C & T. In RNA, U replaces T.

• Cytosine (C) formula is C₄H₅N₃O and Thymine (T) formula is C₅H₆N₂O₂.

Additional Information

• Deoxyribonucleic acid, commonly known as DNA, is the hereditary complex molecule present in humans and almost all other organisms.
• The information in DNA (double helix structure) is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T).
  • DNA has two base pairs, A-T and G-C, attached to a sugar-phosphate backbone.
• DNA is a long molecule that contains our unique genetic code.
  • It holds the instructions for making all the proteins in our bodies and the function of living things.
• In the cell nucleus, the DNA (deoxyribonucleic acid) molecule is packaged into thread-like structures called chromosomes.
  • A chromosome (microscopic structure) is made up of DNA tightly coiled many times around proteins called histones that support its structure.
  • A chromosome has two arms - a p arm (short arm) and a q arm (long arm), joined in the location of the centromere.

• Watson and Crick Proposed the Double Helix structure of DNA with the two strands connected by hydrogen bonds.

Exterior is antonym of interior.

Similarly,