Question Discussion & Solution

The correct answer is Desert Medicine Research Centre.

• The full form of DMRC Jodhpur is Desert Medicine Research Centre.

Key Points

• Desert Medicine Research Centre, Jodhpur
  • Desert Medicine Research Centre, Jodhpur is one of the 27 permanent institutes of the Indian Council of Medical Research which is an autonomous body for the formulation, coordination and promotion of biomedical research in the country.
  • The Centre, established on 27th June 1984, started functioning in the form of three coordinating units located at Jodhpur, Bikaner, and Jaipur. 

Additional Information

• Desert Medicine Research Centre
  • ​Desert Medicine research Centre (DMRC), is one of the permanent institutes of the Indian Council of Medical Research (ICMR), a Government of India’s apex autonomous organization for bio-medical research in the country.

The correct answer is option 4, i.e. Ocean, snow and rain, underground water.

• Water resources available on earth are :
  • Freshwater: Glaciers, ice caps, and snow
  • Groundwater
  • Oceans, seas, streams, rivers, lakes, ponds
  • Wetlands- lagoons, swamps, and marshes
  • Precipitation- Rain, snow, and dew

Hence, from the above points, we can clearly infer that the resources of water on the earth are ocean, snow and rain, underground water.

The correct answer is Magnesium.

Key Points

• The outermost shell of a Magnesium element has two electrons.
  • 12 is the atomic mass for magnesium.
  • it is in group 2 of the periodic table, which it loses, so its outer shell is full (2,8).
  • it has a charge of +2, as it still has 12 protons (positive charges) and now has only 10 electrons (negative charges).
  • Magnesium is used in products that benefit from being lightweight, such as car seats, luggage, laptops, cameras, and power tools.
  • It is also added to molten iron and steel to remove sulfur. 
• Outermost Shell :
  • This outermost shell is known as the valence shell, and the electrons found in it are called valence electrons.
  • In general, atoms are most stable, least reactive, when their outermost electron shell is full.

Additional Information

• Carbon is a chemical element with the symbol C and atomic number 6.
  • It is nonmetallic and tetravalent-making four electrons available to form covalent chemical bonds.
  • It belongs to group 14 of the periodic table. 
  • Carbon typically shares electrons to achieve a complete valence shell, forming bonds with multiple other atoms.
• Boron is a chemical element with the symbol B and atomic number 5.
  • The boron atom has only six electrons in its outer shell, leading to an electron deficiency.
  • This molecule has 12 valence shell electrons, 3 each from the B atoms, and 1 each from the six H atoms.
    • Electrons per shell: 2,3
    • Atomic Mass: 10.811 g/mol
• Chlorine atom consists of 17 protons (positively charged sub-atomic particles) in the atom's nucleus (central region), balanced by seventeen electrons (negatively charged sub-atomic particles) distributed around the nucleus.

Input Devices:

• Input devices are the component of the computer system that accepts incoming data and instructions.
• It converts them into a pattern of electrical signals in binary code that is understandable to a digital computer.

Output Devices:

• Output devices are the component of a computer system that converts the digitized signals into a form understandable to the user.
• The output devices are generally known as the reverse of input devices.
• Output devices also send data from one computer system to another.

Key Points

•  A Visual Display Unit (VDU) is also referred to as a Monitor and VDU (video display unit), a monitor is an output device that displays video images and text.
• A printer is an external hardware output device that takes the electronic data stored on a computer or other device and generates a hard copy.
• A floppy disk is a type of disk storage composed of a disk of thin and flexible magnetic storage medium, sealed in a rectangular plastic enclosure lined with fabric that removes dust particles. It can be both an input and output device.​

Important Points

The Central Processing Unit (CPU):

• The CPU is the brain of the computer.
• Sometimes referred to simply as the processor or central processor, the CPU is where most calculations take place.
• The CPU executes the programs and controls the operation of all the hardware.
• A central processing unit (CPU), also called a central processor, main processor, or just processor is the electronic circuitry that executes instructions comprising a computer program.
• The CPU performs basic arithmetic, logic, controlling, and input/output (I/O) operations specified by the instructions in the program.

​Thus, CPU is not a computer output device.

Mistake Points

• The question is "Which one is not a computer output device?"
• Floppy is both input and output.
• CPU is the only option that is not an output device.

Additional Information

The basic difference between Input and Output devices:

Temporal cohesion:

When a module contains functions that are related by the fact that these functions are executed in the same time span, then the module is said to possess temporal cohesion.

Example of Temporal cohesion,