Science & technology: practice set 2

Which of the following statements with regard to genetic medicine is/are correct?

1. 1.Genetic medicines correct/compensate for the faulty genes responsible for disease.
2. 2.Engineered viruses and lipid nanoparticles are used as carriers of the genetic medicine.
3. 3.Genetic medicines alter the entire DNA sequence.

Select the answer using the code given below:

Which of the following statements with regard to drone swarms is/are correct?

1. 1.They use Terahertz band of frequency to communicate with the command centre.
2. 2.Individual drones in the swarm can communicate with other drones in the swarm.
3. 3.GPS Spoofing is a commonly used technique to counter drone swarm attack.

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Which of the following statements about DHRUV64 is/are correct?

1. 1.It is the third chip fabricated under the DIR-V Programme with an overall aim to enable the creation of microprocessors for India.
2. 2.It is India’s first homegrown 1.0 GHz, 64-bit dual-core microprocessor.

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In the context of electric vehicle batteries, consider the following elements:

1. I.Cobalt
2. II.Graphite
3. III.Lithium
4. IV.Nickel

How many of the above usually make up battery cathodes?

GPS-Aided Geo Augmented Navigation (GAGAN) uses a system of ground stations to provide necessary augmentation. Which of the following statements is/are correct in respect of GAGAN?

1. I.It is designed to provide additional accuracy and integrity.
2. II.It will allow more uniform and high quality air traffic management.
3. III.It will provide benefits only in aviation but not in other modes of transportation.

Select the correct answer using the code given below.

Consider the following statements regarding AI Action Summit held in Grand Palais, Paris in February 2025:

1. I.Co-chaired with India, the event builds on the advances made at the Bletchley Park Summit held in 2023 and the Seoul Summit held in 2024.
2. II.Along with other countries, US and UK also signed the declaration on inclusive and sustainable AI.

Which of the statements given above is/are correct?

Which one of the following is the exhaust pipe emission from Fuel Cell Electric Vehicles, powered by hydrogen?

Consider the following statements:

1. 1.Some microorganisms can grow in environments with temperature above the boiling point of water.
2. 2.Some microorganisms can grow in environments with temperature below the freezing point of water.
3. 3.Some microorganisms can grow in highly acidic environment with a pH below 3.

How many of the above statements are correct?

'Microsatellite DNA' is used in the case of which one of the following?

With reference to Web 3.0, consider the following statements:

1. 1.Web 3.0 technology enables people to control their own data.
2. 2.In Web 3.0 world, there can be blockchain based social networks.
3. 3.Web 3.0 is operated by users collectively rather than a corporation.

Which of the statements given above are correct?

If a major solar storm (solar flare) reaches the Earth, which of the following are the possible effects on the Earth?

1. 1.GPS and navigation systems could fail.
2. 2.Tsunamis could occur at equatorial regions.
3. 3.Power grids could be damaged.
4. 4.Intense auroras could occur over much of the Earth.
5. 5.Forest fires could take place over much of the planet.
6. 6.Orbits of the satellites could be disturbed.
7. 7.Shortwave radio communication of the aircraft flying over polar regions could be interrupted.

Select the correct answer using the code given below:

Which one of the following statements best describes the role of B cells and T cells in the human body?

Consider the following statements:

1. 1.Other than those made by humans, nanoparticles do not exist in nature.
2. 2.Nanoparticles of some metallic oxides are used in the manufacture of some cosmetics.
3. 3.Nanoparticles of some commercial products which enter the environment are unsafe for humans.

Which of the statements given above is/are correct?

Water can dissolve more substances than any other liquid because

In the context of recent advances in human reproductive technology, "Pronuclear Transfer" is used for

In India, the term "Public Key Infrastructure" is used in the context of

Which of the following statements are correct regarding the general difference between plant and animal cells?

1. 1.Plant cells have cellulose cell walls whilst animal cells do not.
2. 2.Plant cells do not have plasma membrane unlike animal cells which do.
3. 3.Mature plant cell has one large vacuole whilst animal cell has many small vacuoles.

Select the correct answer using the code given below:

In the context of proposals to the use of hydrogen-enriched CNG (H-CNG) as fuel for buses in public transport, consider the following statements:

1. 1.The main advantage of the use of H-CNG is the elimination of carbon monoxide emissions.
2. 2.H-CNG as fuel reduces carbon dioxide and hydrocarbon emissions.
3. 3.Hydrogen up to one-fifth by volume can be blended with CNG as fuel for buses.
4. 4.H-CNG makes the fuel less expensive than CNG.

Which of the statements given above is/are correct?

Consider the following statements:

A digital signature is

1. 1.an electronic record that identifies the certifying authority issuing it
2. 2.used to serve as a proof of identity of an individual to access information or server on Internet
3. 3.an electronic method of signing an electronic document and ensuring that the original content is unchanged

Which of the statements given above is/are correct?

With reference to the Indian Regional Navigation Satellite System (IRNSS), consider the following statements:

1. 1.IRNSS has three satellites in geostationary and four satellites in geosynchronous orbits.
2. 2.IRNSS covers entire India and about 5500 sq. km beyond its borders.
3. 3.India will have its own satellite navigation system with full global coverage by the middle of 2019.

Which of the statements given above is/are correct?

With reference to the Genetically Modified mustard (GM mustard) developed in India, consider the following statements:

1. 1.GM mustard has the genes of a soil bacterium that give the plant the property of pest-resistance to a wide variety of pests.
2. 2.GM mustard has the genes that allow the plant cross-pollination and hybridization.
3. 3.GM mustard has been developed jointly by the IARI and Punjab Agricultural University.

Which of the statements given above is/are correct?

Consider the following pairs:

Which of the pairs given above is/are correctly matched?

Consider the following pairs:

Which of the pairs given above is/are correctly matched?

'Project Loon', sometimes seen in the news, is related to

Consider the following statements:

The Mangalyaan launched by ISRO

1. 1.is also called the Mars Orbiter Mission
2. 2.made India the second country to have a spacecraft orbit the Mars after USA
3. 3.made India the only country to be successful in making its spacecraft orbit the Mars in its very first attempt

Which of the statements given above is/are correct?