The correct answer is A - ii, B - iv, C - i, D - iii.

Key Points

• Operating System or OS in a computer manages all of the software and hardware and performs tasks like input-output handling, process management and multitasking as well.
• It provides security, memory management, device management etc.
• There are various OS like Windows, Linux, macOS etc. Ubuntu, Fedora, Kali Linux, and ParrotOS are examples of Linux OS.
• The applications in the computer are classified into different types such as system software, application software and console software.
• Command Line Interface or CLI is a console application used to run programs, used by programmers, and administrators for fetching faster results etc.

Additional Information

• A Search engine is a software that retrieves the information or any resource requested by the user and shows it on the browser over the internet.
  • There are many search engines like Google, Bing, Yahoo, Baidu etc.
• A Web browser is an application that acts as an interface between the user and the internet. It displays all the resources the user had requested on a device.
  • Examples of web browsers are Google Chrome, Mozilla Firefox, Microsoft Edge, Safari etc.
• Chromium is a free and open-source web browser project, developed and maintained by Google.  Microsoft Edge, Samsung Internet, Opera, and many other browsers are based on the Chromium code.
• Hence option 2 is correct.

The correct answer is 1 and 2 only.

Key Points:

• The vice president is India's second-highest constitutional position.
• Members of the Lok Sabha and Rajya Sabha participate in the election and cast secret ballot votes to choose the vice president.
• The Vice President serves as Speaker of the Rajya Sabha.

Additional Information:

• Members Legislative Assemblies:
  • ​A representative who is elected to the State legislature is referred to as a Member of the Legislative Assembly in the Indian system of government (MLA).
  • Each constituency's elected representative is then admitted to the Legislative Assembly by the voters (MLA).
• Members of Legislative councils:
  • In Indian states with bicameral state legislatures, the State Legislative Assembly serves as the lower house, and the State Legislative Council, also known as Vidhan Parishad or Saasana Mandali, is the upper house.

The correct answer is "Chlorofluorocarbons".

Key Points

• Chlorofluorocarbons are diverse compounds including carbon, hydrogen, chlorine, and fluorine, and were soon used extensively as aerosol propellants.
• Chlorofluorocarbon is a natural compound that doesn't arise naturally.
• They are man-made gas.
• It includes carbon, chlorine, and fluorine, produced as a risky by-product of methane, ethane, and propane.
• Commonly acknowledged through the call freon, the manufacture of CFCs.
• In the beyond 50 years, CFC emission has accelerated considerably.
• It is a colourless, odourless, and chemically non-reactive gas.
• Moreover, we will discover it withinside the ecosystem because it stays there for a protracted time.
• CFC is likewise one of these gases concerned withinside the greenhouse effect.
• It is particularly harmful because of its destructive reactions with ozone particles, which protect the earth from UV radiation.
• Few specialised merchandises are the primary supply of CFCs.

Additional Information

•  Bromoethanes:
  • Bromoethane is a Bromoalkane this is ethane sporting a Bromo substituent.
  • It is an alkylating agent used as a chemical intermediate in diverse natural syntheses.
  • It has a position as a carcinogenic agent, a solvent, a refrigerant, a neighbourhood anaesthetic and an alkylating agent.
  • It is a Bromoalkane, a Bromohydrocarbon and an unstable natural compound.
• Bromopropanes:
  • 1-Bromopropane (n-propyl bromide or nPB) is an organobromine compound.
  • It is a colourless liquid this is used as a solvent.
  • It has a characteristic hydrocarbon odour.
  • Its commercial programs improved dramatically withinside the twenty-first century because of the phasing out of chloro¬fluoro¬carbons, per¬chloro¬ethylene, and chloro¬alkanes such as 1,1,1-Trichloro-ethane under the Montreal Protocol. 
• Chloroform:
  • Chloroform (CHCl3) is a colourless liquid that quickly evaporates into a gas. 
  • It can harm the eyes, skin, liver, kidneys, and nervous system. 
  • Chloroform can be toxic if inhaled or swallowed. 
  • Exposure to chloroform may also cause cancer. 
  • Workers may be harmed from exposure to chloroform. 
  • The level of exposure depends upon the dose, duration, and work being done.

The correct answer is Alcohol for human consumption.

Key Points

• The new Goods and Services Tax (GST) replaced most of the previous taxes in India.
• Now GST will be levied at all stages right from manufacture up to final consumption with credit of taxes paid at previous stages available as setoff.
• Only value addition will be taxed and burden of tax is to be borne by the final consumer.
• However, at present, following items are kept outside the purview of GST in India:
• Alcohol for human consumption:
  • Alcohol for human consumption has been kept outside the purview of GST in India at present.
  • However, the taxes imposed to alcohol for human consumption will continue as per the structure before GST implementation.
• Petroleum products:
  • Petroleum Products such as petroleum crude, motor spirit (petrol), high speed diesel, natural gas and aviation turbine fuel etc. are also kept outside the purview of GST in India.
  • Therefore, Petroleum products is kept outside the purview of GST.

Additional Information

• The GST Council is a constitutional body to make recommendations to the Central and State Government on Goods and Services Tax issues.
• The GST Council has been provided in Article 279A (1) of the Constitution by the 101st Constitution Amendment.
• GST Council is the governing body of GST having 33 members, out of which 2 members are off-center and 31 members are from 28 states and 3 Union territories with legislation.
• The GST Council is headed by the Union Finance Minister.

The correct answer is Mizoram.

Key Points

• Chapchar Kut
  • Chapchar Kut is a traditional festival, is celebrated across the northeastern state of Mizoram.
  • It is celebrated during March after the completion of their most arduous task of Jhum operation.
  • The festival is held during the period when the bamboos and trees that have been cut down are being awaited to dry to be burnt for jhumming.
  • Chapchar Kut celebrations started from 1450 AD to 1600 AD in a village called Suaipui.
  • It is one of the three annual festivals of the Mizos celebrated to mark three stages of the agricultural cycle.

Additional Information

• Jhum cultivation, also known as slash and burn agriculture, is the process of growing crops by first clearing the land of trees and vegetation and burning them thereafter.
• Mizoram
  • Capital: Aizawl
  • Chief Minister: Zoramthanga
  • Governor: Kambhampati Hari Babu 
  • State Bird: Hume's Pheasant
  • State Animal: Serow
  • State Tree: Iron Wood
  • State Flower: Red Vanda
  • State Parks: Murlen National Park, Phawngpui Blue Mountain National Park.

The correct answer is Inelastic.

Key Points

• Demand - 
  • ​Demand means quantity demanded by customers at different prices during a given time period.
• Inelastic Demand:
  • When due to change in price (whether increase or decrease), quantity demanded remains same, it is known as inelastic Demand.
  • In case of inelastic Demand, when the price is increased, it will cause the total expenditure of the consumer to increase because total expenditure = quantity demanded × price.
  • The demand will not change but the change in price cause consumer's total expenditure to increase.

Additional Information

• Perfectly inelastic
  • A perfectly inelastic demand has an elasticity of 0.
  • A perfectly inelastic demand is one when there is no change in the demand for a product with a change in its price.
  • For a perfectly inelastic demand, the demand curve is represented as a straight vertical line.
• Perfectly elastic
  • When a small change in the price of a product causes a major change in its demand, it is said to be perfectly elastic demand.
  • In perfectly elastic demand, a small rise in price results in a fall in demand to zero, while a small fall in price causes an increase in demand to infinity.
  • In such a case, the demand is perfectly elastic or e = ∞.

• Unitary elastic
  • The demand curve for unitary elastic demand is a rectangular hyperbola.
  • When the proportionate change in demand produces the same change in the price of the product the demand is referred to as unitary elastic demand.
  • The elasticity of a unitary elastic demand is 1.

The correct answer is Narmada.

Key Points

• The Dhuandhar Falls are located on the Narmada River in Bhedaghat and are 30 meters high.
• The Dhuandhar Falls is a waterfall in Jabalpur district in the Indian state of Madhya Pradesh.
• It is also known as the Smoke cascade and is located at Bhedaghat 30 km away from Jabalpur.
• It is believed that a dip in the holy river can wash away one’s sins.

Additional Information

The correct is Radioactive energy

Key Points

• The heat from radioactive material decay and leftover heat from Earth's formation fuel the planet's internal heat engine.
• Atoms that are radioactive have energy inside them that spontaneously escapes as electromagnetic waves or high-energy subatomic particles.
• Radiation is the term for emissions.
• The Earth naturally contains radioactive material, which contributes to the planet's warmth.
• Cosmic rays also continuously generate radioactive material in the atmosphere.

Additional Information

•  Solar Energy
  • Solar power is generated by the sun.
  • The sun's radiant radiation may be transformed into electrical or thermal energy, making it the most abundant energy source on Earth.
  • Solar energy is used for a variety of things, including lighting and heating our homes, places of business, and other facilities.
  • Solar energy is a renewable resource and, as such, is essential to the development of clean energy.
• Volcanoes
  • An opening in the crust of a planet or moon known as a volcano allows molten rock, heated gases, and other things to erupt.
  • As layers of rock and ash accumulate from numerous eruptions, volcanoes frequently take the form of a hill or mountain.
  • There are three types of volcanoes: active, dormant, and extinct.
    • Active volcanoes have recently erupted; they are likely to do so once more.
    • Volcanoes that are dormant have not erupted in a very long time yet could do so in the future.
    • It seems unlikely that extinct volcanoes will erupt in the near future.
• Tides
  • Tides are the rise and decrease in sea levels brought on by the combined effects of the Moon's (and the Sun's, to a much lesser extent) gravitational pulls, as well as by the Earth and Moon orbiting one another.
  • To determine the anticipated times and amplitude for any location, tide tables can be employed (or "tidal range").

The correct answer is the Sayyid dynasty.

Key Points

• Sayyid dynasty
  • The Sayyid dynasty ruled over India after the invasion of Timur.
  • Taimur invaded India during the reign of Nasir-ud-din Mahmud Shah Tughlaq of the Tughlaq dynasty in 1398 AD.
  • The Sayyid dynasty was founded by Khizir Khan, who was the governor of Multan and Timur's deputy in India.
  • Ala-ud-din Shah was the last ruler of this dynasty.

Additional Information

• Lodi dynasty
  • It was the fifth and last dynasty of the Delhi Sultanate. 
  • The Lodi dynasty ruled from 1451 AD - 1526 AD.
  • The founder of the Lodi dynasty was Bahlul Lodhi.
  • This was an Afghan dynasty and was also known as the Pashtun dynasty.
  • Ibrahim Lodhi was the last ruler of this dynasty and was killed by the Babur's troops in the battle of Panipat.
• Tughlaq dynasty 
  • This was the Muslim dynasty of Indo-Turkic origin, ruled in India from 1320 AD - 1414 AD.
  • The Tughlaq dynasty was founded by Ghiyas-ud-din Tughlaq.
  • He ascended to the throne by killing Mubarak Khilji, the last ruler of the Khilji dynasty.
  • Nasir-ud-din Muhammad Tughlaq was the last ruler of this dynasty.
• Khilji dynasty
  • It was the second ruling dynasty of the Delhi Sultanate.
  • It was established by Jalaluddin Firuz Khilji by overthrowing the Slave dynasty.
  • Khilji dynasty ruled for around 30 years, 1290 AD - 1320 AD.
  • Alauddin Khilji was the most powerful ruler of this dynasty who led many successful military campaigns.

The Correct Answer is Sahara Desert.

Key Points

• Noor Complex Solar Power Plant is the world's largest concentrated solar power (CSP) plant, located in the Sahara Desert.
• Ouarzazate Solar Power Station, also called Noor Power Station is a solar power complex located in the Drâa-Tafilalet region in Morocco.
• The Sahara is the largest hot desert in the world, and the third-largest desert behind Antarctica and the Arctic, which are both cold deserts.

Additional Information

• The Thar Desert, also known as the Great Indian Desert, is a large, arid region in the northwestern part of the Indian subcontinent that covers an area of 200,000 km².
• The Kalahari Desert is a large semi-arid sandy savannah in Southern Africa extending 900,000 square kilometres.
• The Gobi Desert is a vast, arid region in Northern China and southern Mongolia.