A. At the bottom B. ln the middle pan C. At the top surface D. Uniformly throughout the water body The correct answer to the question: “A lake starts freezing because of the cold atmosphere. It will first freeze” is “At the top surface”.
A. The mass of the astronaut is reduced to zero B. Gravity inside the spacecraft ceases to act C. The astronaut is outside the influence of the earth’s gravitational force D. The astronaut and the spacecraft are both in a free-failing state The correct answer to the question: “An astronaut inside a spacecraft is in … Read more
A. Of refraction B. It is cooler at sunrise and at sunset C. Of diffraction leading to red end of the spectrum reaching the earth. D. Of Scattering of light due to dust particles and air molecules. The correct answer to the question: “The sun appears red at sunrise and sunset while it appears white … Read more
A. One tenth B. One fifth C. One fourth D. One third The correct answer to the question: “An iceberg is floating in sea. How much of its mass will remain above the surface of water?” is “One tenth”.
A. Mesosphere B. Troposphere C. Stratosphere D. ionosphere The correct answer to the question: “Most of the ozone in the atmosphere is concentrated in the _____________?” is “Stratosphere”.
A. 60% B. 65% C. 72% D. 80% The correct answer to the question: “The cow’s milk contains how much amount of water in terms of percentage?” is “80%”.
A. the strength of T.V. waves is very limited B. picture cannot be transmitted clearly after a specific distance C. the shape of the earth is spherical D. the air is not a good conductor of light and sound/waves The correct answer to the question: “T.V. transmission cannot cover a very large area because” is … Read more
A. Carbon dioxide B. Carbon monoxide C. Carbon tetrachloride D. None of the above The correct answer to the question: “The Green House Effect is caused by an excess of ?” is “Carbon dioxide”.
A. Ultraviolet Waves B. Ultrasonic Waves C. Electromagnetic Waves D. Special Retina The correct answer to the question: “Bats can also fly in dark because they are capable of taking the help of _________?” is “Ultrasonic Waves”.
A. A device which when attached to an aircraft makes it invisible on the radar B. A coating which reduces the visibility of an aircraft on radar C. A Technology by which it is possible for the aircraft’s to spy in the enemy air-space D. A technology by using which paratroopers can be dropped stealthily … Read more