2020 Science & Technology Practice Questions

With reference to the current trends in the cultivation of sugarcane in India, consider the following statements:
1. A substantial saving in seed material is made when 'bud chip settings' are raised in a nursery and transplanted in the main field.
2. When direct planting of seeds is done, the germination percentage is better with single-budded setts as compared to setts with many buds.
3. If bad weather conditions prevail when seeds are directly planted, single-budded seeds have better survival as compared to large setts.
4. Sugarcane can be cultivated using settlings prepared from tissue culture.
Which of the statements given above is/are correct?

With reference to solar water pumps, consider the following statements:
1. Solar power can be used for running surface pumps and not for submersible pumps.
2. Solar power can be used for running centrifugal pumps and not the ones with piston.
Which of the statements given above is/are correct?

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

Which of the following statements are correct regarding the general difference between plant and animal cells?
1. Plant cells have cellulose cell walls whilst animal cells do not.
2. Plant cells do not have plasma membranes unlike animal cells which do.
3. Mature plant cell has one large vacuole whilst an animal cell has many small vacuoles.
Select the correct answer using the code given below:

Consider the following activities:
1. Spraying pesticides on a crop field
2. Inspecting the craters of active volcanoes
3. Collecting breath samples from spouting whales for DNA analysis.
At the present level of technology, which of the above activities can be successfully carried out by using drones?

In India, why are some nuclear reactors kept under “IAEA Safeguards” while others are not?

The experiment will employ a trio of spacecraft flying in formation in the shape of an equilateral triangle that has sides one million kilometers long, with lasers shining between the craft.” The experiment in question refers to

When reference to carbon nanotubes, consider the following statements:
1. They can be used as carriers of drugs and antigens in the human body.
2. They can be made into artificial blood capillaries for an injured part of the human body.
3. They can be used in biochemical sensors.
4. Carbon nanotubes are biodegradable.
Which of the statements given above are correct?

With reference to “Blockchain Technology” consider the following statements:
1. It is a public ledger that everyone can inspect but which no single user controls
2. The structure and design of blockchain is such that all the data in it is about crypto currency only.
3. Applications that depend on basic features of blockchain can be developed without anybody’s permission.
Which of the statements given above is/are correct?

In India, under cyber insurance for individuals, which of the following benefits are generally covered, in addition to payment for the loss of funds and other benefits?
1. Cost of restoration of the computer system in case of malware disrupting access to one’s computer
2. Cost of a new computer if some miscreant wilfully damages it, if proved so
3. Cost of hiring a specialized consultant to minimize the loss in case of cyber extortion
4. Cost of defence in the Court of Law if any third party files a suit
Select the correct answer using the code given bełow: