586: What is the application of Somatic Cell Nuclear Transfer (SCNT) Technology?
(a) Production of biolarvicides
(b) Manufacture of biodegradable plastics
(c) Reproductive cloning of animals
(d) Production of organisms free of diseases
587: The known forces of natures can be divided into four classes, viz., gravity, electromagnetism, week nuclear force and strong nuclear force. With reference to them, which one of the following statements is not correct?
(a) Gravity is the strongest of the four
(b) Electromagnetism act only on particles with an electric charge
(c) Weak nuclear force causes radioactivity
(d) Strong nuclear force holds protons and neutrons inside the nuclear of an atom.
Explanation:
Gravity is the weakest of them all because its relative strength is 10 to the power minus 39. where as Strong nuclear force has relative strength 1
Refer to the table given on NCERT Physics Class11, Chapter1, Page 10.
So statement (a) is not correct and rest of them are correct.
588: With reference to agriculture in India, how can the technique of genome sequencing, often seen in the news, be used in the immediate future?
1. Genome sequencing can be used to identify genetic markers for disease resistance and drought tolerance in various crop plants.
2. This technique helps in reducing the time required to develop new varieties of crop plants.
3. It can be used to decipher the host-pathogen relationships in crops.
Select the correct answer using the code given below:
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
589: In the context of wearable technology, which of the following tasks is/are accomplished by wearable devices?
1. Location identification of a person
2. Sleep monitoring of a person
3. Assisting the hearing impaired person
Select the correct answer using the code given below:
(a) 1 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3
Explanation:
In recent times, there has been a new surge in wearable technology worn on the ear, referred to as hearables. Wearable technology is a category of electronic devices that can be worn as accessories, embedded in clothing, implanted in the user's body, or even tattooed on the skin.
Source: https://www.investopedia.com/terms/w/wearable-technology.asp
590: Which one of the following non-metals is not a poor conductor of electricity?
(a) Bromine
(b) Sulphur
(c) Phosphorus
(d) Selenium
Explanation:
Gray Selenium conducts electricity. It is a better conductor of electricity in light than in darkness, its conductivity varying directly with the intensity of light.