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You Are On Question Answer Bank SET 2030
101501. Moment of inertia is?
Answer: tensor
101502. Inside an aeroplane, flying at a high altitude,?
Answer: normal atmospheric pressure is maintained by the use of air pumps
101503. Sound travels with a different speed in media. In what order does the velocity of sound increase in these media?
Answer: Air; water and iron
101504. One thousand microns is equal to?
Answer: 10-3m
101505. Sound travels at the fastest speed in?
Answer: steel
101506. oil raise up the wick in a lamp. The principle involves?
Answer: capillary action phenomenon
101507. Superconductors are substances which?
Answer: offer no resistance to the flow of electricity
101508. Light travels at the fastest speed in?
Answer: vacuum
101509. Railway tracks are banked on curves?
Answer: necessary centripetal force may be obtained from the horizontal component of the weight of the train
101510. On a cold day when a room temperature is 15oC, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15oC, because?
Answer: metals are good conductor of heat
101511. Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons?
Answer: 3.3 km; 0.30 km
101512. Intensity of sound at a point is ____ its distance from the source.?
Answer: inversely proportional to square of
101513. Of the four locations mentioned below the highest inside temperature will be attained in the pressure cooker operated with the pressure valve open?
Answer: at a place in a valley below sea level
101514. Radio telescopes are better than optical telescopes because?
Answer: All of the above
101515. Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit?
Answer: visible light
101516. Mercury is commonly used as a thermometric fluid rather than water because?
Answer: mercury has greater visibility than water
101517. Optical fibre works on the?
Answer: total internal reflection
101518. Light from the star, Alpha Centauri, which is nearest to the earth after the sun, reaches the earth in?
Answer: 4.2 years
101519. Mach number is used in connection with the speed of?
Answer: aircraft
101520. On a stationary sail boat, air is blown from a fan attached to the boat. The boat?
Answer: does not move
101521. Rainbow is due to?
Answer: refraction and reflection of sunlight by water droplets
101522. Stars which appear single to the naked eye but are double when seen through a telescope are?
Answer: binaries
101523. ML2T-2 is the dimensional formula for?
Answer: couple acting on a body
101524. Solar eclipse will take place when?
Answer: the moon is between the sun and the earth
101525. Isotopes of an element contain?
Answer: the same number of protons but different number of neutrons
101526. One watt-hour is equivalent to?
Answer: 3.6 x 103 J
101527. Sir C.V. Raman was awarded Nobel Prize for his work connected with which phenomenon of radiation?
Answer: Scattering
101528. Radiocarbon dating technique is used to estimate the age of?
Answer: fossils
101529. Large astronomical telescopes always use as objective?
Answer: combinations of lenses
101530. One should not connect a number of electrical appliances to the same power socket because?
Answer: this can damage the domestic wiring due to overloading
101531. Rainbow is produced when sunlight fall on drops of rain. Which of the following physical phenomena are responsible for this : Diffusion, Refraction, Internal reflection?
Answer: II and III
101532. Natural radioactivity was discovered by?
Answer: Henri Becquerel
101533. Planets are?
Answer: non-luminous heavenly bodies
101534. One nanometer is equal to?
Answer: 10-9m
101535. Mica is used in electrical appliances such as electric iron because mica is?
Answer: a good conductor of heat but a bad conductor of electricity
101536. It is easier to roll a barrel full of coal tar than to pull it because?
Answer: the rolling friction is much less than the sliding friction
101537. Minimum number of unequal vectors which can give zero resultant are?
Answer: three
101538. Intensity of sound has?
Answer: an object existence
101539. Rain is falling vertically downwards. To a man running east-wards, the rain will appear to be coming from?
Answer: east
101540. An aeroplane is flying horizontally with a velocity of 600 km/h and at a height of 1960 m. When it is vertically at a point A on the ground a bomb is released from it. The bomb strikes the ground at point B. The distance AB is?
Answer: 3.33 km
101541. Father of Chemistry?
Answer: Robert Boyle
101542. The author of the book 'Sceptical Chymist’ is?
Answer: Robert Boyle
101543. Father of of Indian Chemistry?
Answer: P.C. Roy
101544. Father of Organic Chemistry?
Answer: Friedrich Wohler
101545. Ancient Chemistry is known as?
Answer: Alchemy
101546. Ancient Chemists were known as?
Answer: Alchemists
101547. The scientist known as the father of Soda pop?
Answer: Joseph Priestly
101548. International year of chemistry was?
Answer: 2011
101549. എടത്വ, മാരാമൺ എന്നീ സ്ഥലങ്ങളിലൂടെ കടന്നുപോകുന്ന നദി? [Edathva, maaraaman ennee sthalangaliloode kadannupokunna nadi?]
Answer: പമ്പ [Pampa]
101550. New methods used in chemistry which aim to reduce pollution are called?
Answer: Green Chemistry
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