Question Discussion & Solution

The correct answer is SRAM.

​Key Points

• SRAM memory devices are very much similar, mainly in terms of speed, to the cache memory.
• SRAM stands for Static random-access memory.
• Static random-access memory is a type of random-access memory that uses latching circuitry to store each bit.
• SRAM is volatile memory; data is lost when power is removed.
• The term static differentiates SRAM from DRAM which must be periodically refreshed.

Additional Information

• Dynamic random access memory (DRAM) is a type of semiconductor memory that is typically used for the data or program code needed by a computer processor to function.
• Flash memory, also known as flash storage, is a type of nonvolatile memory that erases data in units called blocks and rewrites data at the byte level.
• EEPROM (electrically erasable programmable read-only memory) is user-modifiable read-only memory (ROM) that can be erased and reprogrammed (written to) repeatedly through the application of higher than normal electrical voltage.

The correct answer is Ajmer.

Key Points

• The headquarter of the Rajasthan Revenue Council is located in Ajmer.
• Functions of Revenue Department:
  • All matters relating to levy and collection of Direct Taxes.
  • All matters relating to levy and collection of Indirect Taxes.
  • Investigation into economic offenses and enforcement of economic laws.
  • Levy of taxes on sales in the course of inter-state trade or commerce.

Additional Information

• Bikaner:
  • Bikaner city is the district headquarters which was founded in 1486 AD by Rao Bika, a Rajput ruler, and is the fourth largest city of the State. 
• Jaipur:
  • It is the capital of India’s Rajasthan state.
  • It evokes the royal family that once ruled the region and that, in 1727, founded what is now called the Old City, or “Pink City” for its trademark building color. ​
• Jodhpur:
  • It is a city in the Thar Desert of the northwest Indian state of Rajasthan.
  • Its 15th-century Mehrangarh Fort is a former palace that’s now a museum, displaying weapons, paintings, and elaborate royal palanquins. 
• Ajmer:
  • Ajmer is a city in the northern Indian state of Rajasthan.
  • It is situated on the lower slopes of the Taragarh Hill of that range. 
  • South of the city's artificial Ana Sagar Lake is Ajmer Sharif Dargah, the domed shrine of the Muslim Sufi saint Garib Nawaz. 

The correct answer is Fossil fuels.

Key Points

Non-Renewable Resources Examples

• Fossil Fuel
• Coal
• Rare earth elements
• Petroleum products
• Uranium

Thus, Fossil fuels are a non-renewable source of energy.

Additional Information 

Types of Renewable Energy

Solar Energy:

• ​The radiant light and heat energy from the sun is harnessed with the use of solar collectors.
• These solar collectors are of various types such as photovoltaics, concentrator photovoltaics, solar heating, (CSP) concentrated solar power, artificial photosynthesis, and solar architecture.
• This collected solar energy is then used to provide light, heat, and different other forms of electricity.

Wind Energy:

• The energy we get from winds is known as wind energy.
• For this, windmills have been used for hundreds of years to pump out water from the ground. We use large tall wind turbines that allow winds to generate electricity.
• The natural airflow on the surface of the earth is used to run the wind turbines.
• The most preferred locations for these wind turbines to be installed are the areas which and strong and have constant airflows on offshore and sites that are at high altitudes.

Hydroelectricity:

• According to statistics, hydroelectricity generated around 16.6% of the global energy resources and constituted about 70% of all the renewable electricity.
• This energy is another alternative source of energy that is generated by the construction of dams and reservoirs on the flowing water, the kinetic energy from the flowing water is used to run the turbines which generate electricity.
• Tidal power converts the energy of tides and Wave power which captures the energy from the surface of the ocean waves for power generation.
• These two forms of hydropower also have huge potential in electric power generation

Geothermal Energy:

• It is the energy that is generated from the thermal energy which is stored in the earth.
• The heat energy is captured on sources such as hot springs and volcanoes and this heat is directly used by industries for heating the water and other purposes.

Bio-Energy:

• This type of energy is derived from biomass which is a type of biological material derived from living organisms and plant-derived materials which are called lignocellulosic biomass.
• Biomass can be directly used via combustion to produce heat and indirectly it can be used to convert to biofuels.
• Biomass can be converted to other usable forms of energy such as transportation fuels like ethanol, biodiesel, and methane gas.

Rajendra Prasad is the first president of India. Similarly, the first president of USA is George Washington.

Hence, George Washington is the correct answer.

The correct answer is Resolution.

• The number of horizontal and vertical pixels on a display screen is called Resolution.

​Key Points

• Resolution
  • ​ The number of horizontal and vertical pixels on a display screen is called Resolution.
  • The more pixels, the more information is visible without scrolling.
  • Screen resolutions have a pixel count such as 1600x1200, which means 1,600 horizontal pixels and 1,200 vertical pixels.
  • Screen resolutions also have base names, such as HDTV and Ultra UHD for TVs and XGA and WQXGA for computer monitors.  

Additional Information

• Dot Pitch 
  • ​Dot pitch is a measurement that defines the sharpness of a display.
  • It measures the distance between the dots used to display the image on the screen.
  • This distance is very small and is typically measured in fractions of millimetres.
• Aspect Ratio
  • ​Aspect ratio describes the ratio between the width and height of an image or screen.
  • The first number refers to the width, and the second number refers to the height.
  • A 1:1 aspect ratio, for example, is a square.