06 March 2023

Q1. Recently, Mukundpura CM2, often seen in news is related to which of the following?

(a) It is place where uranium deposit was found in Andhra Pradesh

(b) It is a disputed area between India and Sri Lanka

(c) It is a meteorite

(d) It is a nuclear power plant commissioned in Bangladesh with technical assistance

from India.

ANS-C

Explanation:

• The meteorite named Mukundpura CM2 was classified to be acarbonaceous chondrite.
• This is a type of stony meteorite, considered the most primitivemeteorite and a remnant of the first solid bodies to accrete in the solar system.
• Thecomposition of carbonaceous chondrites is also similar to the Sun.
• Chondrites are silicate-droplet-bearing meteorites, and thisMukundpura chondrite is the fifthcarbonaceous meteorite known to fall in India.

Q2. American scientists have created the genetic clone of which one of the following species in 2021?

(a) American bald eagle

(b) Black hooved reindeer

(c) Black footed ferret

(d) White civet cat

ANS-C

 Explanation:

• Black-footed ferret: Extinct species native to North America, Scientistmade a genetic clone based on a dead ferret from 1988. Named her “Elizabeth Ann”
• So,the answer is C.

Q3. United Nations’ “Orange the World” campaign is related to which one of the following?

(a) For increasing afforestation

(b) For reducing global poverty

(c) For reducing global temperature

(d) For raising awareness on gender-based violence

ANS-D

Explanation:

• Orange The World is the UN’s campaign to raise awareness on gender-based violence.
• Therefore the correct answer is D.

Q4. What is the objective of RBI’s New Umbrella Entities (NUE) initiative?

(a) Detection of banking frauds

(b) Coordinate Basel implementation

(c) Coordinate priority sector lending norms

(d) Bringing competition and innovation in digital payment and retail payment

technology

ANS-D

Explanation:

• RBI launched New umbrella entities (NUEs) initiative.
• For bringingcompetition and innovation in digital payment and retail payment systems related toATMs, white-label PoS; Aadhaar-based payments and remittance services- against theexisting player National payment Corporation of India (NPCI).
• Therefore, the correct answer is D.

Q5. Which of the following statement(s) is/are correct?

1. Thalassemia is a disease that causes excessive production of haemoglobin in body.
2. Cirrhosis is a disease related to liver tissues.
3. Sickle cell anaemia is a genetic disorder.

Select the correct answer using the code given below:

(a) 1 and 3 only

(b) 2 only

(c) 1 and 2 only

(d) 2 and 3only

ANS-D

 Explanation:

• Thalassemia is an blood disorder that causes the body to have lesshaemoglobin than normal. so, statement 1 is wrong.
• Cirrhosis is a late stage of scarring of the liver tissues so statement 2 is right.
• Sickle cell anemia is a group of Genetic disorders that cause red blood cells to becomemisshapen and break down. So, statement 3 is right.
• Therefore, the correct answer is d.

Q6. Consider the following statement(s) about the Canine distemper virus:

1. Canine distemper virus can cause death of Asiatic lions.
2. No vaccine is available for Canine distemper virus.

Which of the statements given above is/are correct?

(a) 1 only

(b) 2 only

(c) Both 1 and 2

(d) Neither 1 nor 2

ANS-A

 Explanation:

• Canine Distemper Virus (CDV) is a viral disease that infects thegastrointestinal, respiratory, and central nervous systems.
• Canine distemper virusresulted in death of more than 30 Gir lions. Subsequently the Government of Gujaratbegan the vaccination of the lions in Gir sanctuary 2018-19.
• Therefore, the correct answer is A.

Q7.  The term ‘Principle of Essentiality’ is often seen in the media in the context of

(a) Donation of organs

(b) Genetic engineering of human babies

(c) RTPCR test for viral diseases

(d) Clinical research trials

 ANS-D

 Explanation:

• The Principle of Essentiality is critical for conduction of human trials inclinical research.
• It states that research being carried out should be essential foradvancement of knowledge that benefits patients, doctors and all others in aspects ofhealthcare and also for the ecological and environmental well-being of the planet.
• Various other principles such as Voluntariness, Non-exploitation, Risk Minimization etc.must also be taken into consideration.

Q8. A part of distributed computing topology in which information processing is located close to where things and people produce or consume that information. Which among the following technology is being referred to in the above passage?

(a) Cloud Computing

(b) Edge Computing

(c) Star Network

(d) Quantum Computing

ANS-B

 Explanation:

• Edge Computing is a part of distributed computing topology in whichinformation processing is located close to where things and people produce or consumethat information.
• At its basic level, edge computing brings computation and data storage closer thedevices where it’s being gathered, rather than relying on central location that can bethousands of miles away.
• This is done so that data, especially real time data, does notsuffer latency issues that can affect an application’s performance.
• In addition,companies can save money by having the processing done locally, reducing the amountof data that needs to be processed in a centralised or cloud based location.

Q9. A computer malware can effectively do which of the following?

1. Stealing data
2. Deleting sensitive data
3. Altering or hijacking core computer functions
4. Monitoring users’ computer activity

Select the correct answer using the code given below:

(a) 2 and 3 only

(b) 1 and 4 only

(c) 1, 2 and 3 only

(d) 1, 2, 3 and 4

ANS-D

 Explanation:

• Malware or malicious software is any program or file that is harmful to acomputer user.
• Types of malware can include computer viruses, worms, Trojans horsesand spyware.
• These malicious programs can perform a variety of functions such asstealing, encrypting or deleting sensitive data, altering or hijacking core computerfunctions and monitoring users’ computer activity.

Q10. With reference to ‘combustion’ and ‘ignition’ phenomenon, consider the following statements:

1. Inflammable substances have a very high ignition temperature.
2. CO2 acts as the best extinguisher for inflammable materials like petrol and electric equipment’s related fires

3. The amount of heat energy produced on complete combustion of 1kg of fuel is called as its calorific value

Which of the statements given above is/are correct?

(a) 1 and 2 only

(b) 2 and 3 only

(c) 3 only

(d) 1, 2 and 3

ANS-B

 Explanation:

• The ignition temperature is the lowest temperature at which a substancecatches fire.
• The substances which catch fire very easily and have very low ignitiontemperature are called as inflammable substances.
• Hence statement 1 is incorrect.
• CO2 is the best extinguisher for inflammable materials like petrol and electricequipment’s related fire.
• As CO2 is much heavier than O2 such that CO2 covers fire like ablanket.
• Since the contact between oxygen and fuel is removed, fire is controlled.
• Hencestatement 2 is correct.
• The amount of heat energy produced on complete combustion of 1kg of fuel is called asits calorific value.
• The calorific value of a fuel is expressed in a unit called KJ/Kg.
• Hencestatement 3 is correct.

Source: Class 8 NCERT CHAPTER 6 PAGE NO: 69