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You Are On Question Answer Bank SET 2331
116551. The change of a solid into vapor directly is called?
Answer: Sublimation
116552. How can boiling point of a liquid be reduced?
Answer: By decreasing the pressure on the liquid
116553. The speed of light with the rise in the temperature of the medium?
Answer: Remains unaltered
116554. Tides in the sea are caused by:?
Answer: Combined effect of moon and sun
116555. Tidal range denotes the?
Answer: Difference between high and low tide
116556. Radiolarian oozes occur in the depths of?
Answer: 2000 to 5000 fathoms
116557. Fiord originate as a result of?
Answer: Glacial erosion
116558. Which is the largest gulf in the world?
Answer: The Gulf of Mexico
116559. The canal joining Baltic Sea to the North Sea is?
Answer: Kiel Canal
116560. Coral reefs are formed by?
Answer: Tiny colonial marine animals which construct limestone skeleton material
116561. The Great Barrier Reef is?
Answer: Conglomeration of corals in Australian waters
116562. An oxe-bow lake is a?
Answer: Lake formed due to cut off meander
116563. Phenol is also called??
Answer: Carbolic acid
116564. Aspirin is??
Answer: Antipyretic
116565. Salicylic acid is used??
Answer: Methyl salicylate
116566. What is the bond between two amino acids in a protein called??
Answer: Ester bond
116567. What does protein deficiency in the children usually between the age of 1 to 3 years cause??
Answer: Kwashiorkor
116568. Deficiency of which vitamin results in inflammation of skin and eczema along with diarrhea??
Answer: Nicotinic acid
116569. The lowest layer of earth’s atmoshphere is??
Answer: Troposphere
116570. A main in a train moving at a constant velocity drops a ball on the platform. The path of the ball as seen by an observer standing on the platform is?
Answer: A parabola
116571. Lightyear is a measurement of?
Answer: Stellar distances
116572. Gas thermometers are more sensitive than the liquid thermometers because the gases?
Answer: Have low specific heat
116573. When lake starts freezing the formation of the ice will start first at the?
Answer: Top
116574. Heat is associated with?
Answer: K.E of random motion of molecules
116575. The value of g on the earth’s surface changes due to?
Answer: Both rotation and shape of the earth
116576. The gas thermometers are more sensitive than the liquid thermometers because of gases?
Answer: Expand more than liquids
116577. The process of emission of electrons from metal by UV rays is?
Answer: Photoelectric emission
116578. The electrons are emitted in the photoelectric effect from a metal surface?
Answer: Only if the frequency of the incident radiation is above a certain threshold value
116579. The dual nature of light is exhibited by?
Answer: Diffraction and photoelectric effect
116580. Photocells are used for the?
Answer: B and Both
116581. Photoelectric effect can be explained by assuming that light?
Answer: Consists of quanta
116582. Which is the incorrect statement of the following?
Answer: Photon is a particle with zero momentum
116583. The velocity of photo electron emitted in photoelectric effect depends only on?
Answer: The wave length of incident light
116584. The wavelength of the matter waves is independent of?
Answer: Charge
116585. A photo sensitive material would emit electrons, if excited by photons beyond a threshold. To overcome the threshold, one would increase?
Answer: The frequency of light
116586. Potassium is extracted by the electrolysis of?
Answer: Fused KOH
116587. The active metals are extracted from their ores by the process of reduction with?
Answer: Electric current
116588. The purification of alumina is done by?
Answer: Baeyer’s process
116589. An important ore of Mg is?
Answer: Carnallite
116590. During the process of electrolytic refining of copper some metals present as impurity settle as anode mud these are?
Answer: Ag and Au
116591. In nuclear fission the percentage of mass converted into energy is about?
Answer: 0.10%
116592. In photoelectric effect the number of photoelectrons emitted is proportional to?
Answer: Intensity of incident beam
116593. In which mode of transmission, the heat waves travel along the straight line with the speed of light?
Answer: Lose energy
116594. Coefficient of linear expansion always …….. with the increase in temperature?
Answer: Remains
116595. A circular disc of copper has a symmetrical hole at its center. The disc is uniformly heated. The diameter of the hole will?
Answer: Increase
116596. The displacement-time graph of a particle acted upon by a constant force is?
Answer: A Straight line
116597. If a graph is plotted taking the temperature in Fahrenheit along the Y-axis and the corresponding temperature in Celsius along X- axis it will be the straight line?
Answer: Having a positive intercept on the Y-axis
116598. Photosynthesis is fasters in?
Answer: Red light
116599. In photosynthesis?
Answer: Light energy is converted into chemical energy
116600. When chlorophyll absorbs light it gets excited and emits?
Answer: Electrons
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