What Advantage Does Thorium Hold Over Uranium?
To meet its rapidly growing energy demand, some opine that India should pursue research and development on thorium as the future fuel of nuclear energy. In this context, what advantage does thorium hold over uranium? 1. Thorium is far more abundant in nature than uranium. 2. On the basis of per unit mass of mined […]
Which of the Following is /are Cited By The Scientists As Evidence/ evidence for the continued expansion of the universe?
Which of the following is /are cited by the scientists as evidence/ evidence for the continued expansion of the universe? 1. Detection of microwaves in space 2. Observation of redshift phenomenon in space 3. Movement of asteroids in space 4. Occurrence of supernova explosions in space Select the correct answer using the codes given below(2012) […]
What Prevents Them From Reaching the Surface of the Earth?
Electrically charged particles from space travelling at speeds of several hundred km/sec can severely harm living beings if they reach the surface of the Earth. What prevents them from reaching the surface of the Earth?(2012) a) The Earth’s magnetic field diverts them towards its poles b) Ozone layer around the Earth reflects them back to […]
What is/are the Implication/ implications of the Creation of Antimatter?
A team of scientists at Brookhaven National Laboratory including those from India created the heaviest antimatter (anti-helium nucleus). What is/are the implication/ implications of the creation of antimatter? 1. It will make mineral prospecting and oil exploration easier and cheaper. 2. It will help probe the possibility of the existence of stars and galaxies made […]
What is the Difference Between Asteroids and Comets?
What is the difference between asteroids and comets? 1. Asteroids are small rocky planetoids, while comets are formed of frozen gases held together by rocky and metallic material. 2. Asteroids are found mostly between the orbits of Jupiter and Mars, while comets are found mostly between Venus and Mercury. 3. Comets show a perceptible glowing […]
Graphene Is Frequently In The News Recently. What is its importance?
Graphene is frequently in the news recently. What is its importance? 1. It is a two-dimensional material and has good electrical conductivity. 2. It is one of the thinnest but strongest materials tested so far. 3. It is entirely made of silicon and has high optical transparency. 4. It can be used as ‘conducting electrodes’ […]
What Is The Role of Ultraviolet (UV) Radiation In The Water Purification Systems?
What is the role of ultraviolet (UV) radiation in the water purification systems? 1 It inactivates /kills the harmful microorganisms in water. 2 It removes all the undesirable odours from the water. 3 It quickens the sedimentation of solid particles, removes turbidity and improves the clarity of water. Which of the statements given above is/are […]
Some Species of Which of the Above Kinds Of Organisms are Employed as Biopesticides?
Consider the following kinds of organisms : 1. Bacteria 2. Fungi 3. Flowering plants Some species of which of the above kinds of organisms are employed as biopesticides?(2012) a)1 only b) 2 and 3 only c) 1 and 3 only d) 1, 2 and 3 Answer: D All can be used as biopesticides.
What Is “Virtual Private Network”?
What is “Virtual Private Network”?(2011) a) It is a private computer network of an organization where the remote users can transmit encrypted information through the server of the organization b) It is a computer network across a public internet that provides users access to their organization’s network while maintaining the security of the information transmitted […]
How Do Antioxidants Help A Person Maintain Health and Promote Longevity
Regular intake of fresh fruits and vegetables is recommended in the diet since they are a good source of antioxidants. How do antioxidants help a person maintain health and promote longevity?(2011) a)They activate the enzyme necessary for vitamin synthesis in the body and help prevent vitamin deficiency b) They prevent excessive oxidation of carbohydrates, fats […]