Description : The science dealing with the study of phenomena at very low temperatures is known as (a) refrigenics (b) cytogenics (c) frozenics (d) cryogenics
Last Answer : Ans:(d)
Description : Cryogenics is: (1) A scientific study of dust (2) Study of heat (3) Scientific study of very low temperatures (4) Study of genesis
Last Answer : Scientific study of very low temperatures
Description : 'Cryogenics' is a science dealing with – (1) high temperatures (2) low temperatures (3) friction and wear (4) growth of crystals
Last Answer : (2) low temperatures Explanation: Cryogenics is the study of how to get to low temperatures and of how materials behave when they get there. Besides the familiar temperature scales of Fahrenheit and ... modern processes being used to treat metals (as well as other materials) is cryogenic tempering.
Description : ‘Cryogenics’ is a science dealing with (1) high temperatures (2) low temperatures (3) friction and wear (4) growth of crystals
Last Answer : low temperatures
Description : 'Cryogenics' is concerned with the generation & use of low temperature in the range of (A) 0°K to 123°K (B) 0°C to - 123°C (C) 0°C to - 273°C (D) 0°K to 273°K
Last Answer : Option A
Description : Superconductors are those elements – (1) Whose conductivity is intermediate between metals and insulators (2) Whose resistance falls almost to zero at very low temperature (3) Which conduct electricity only at super-high temperature (4) Which conduct electricity only, at super-high temperatures
Last Answer : (2) Whose resistance falls almost to zero at very low temperature Explanation: Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic fields occurring in ... lines from the interior of the superconductor as it transitions into the superconducting state.
Description : Superconductors are those elements (1) Whose conductivity is intermediate between metals and insulators (2) Whose resistance falls almost to zero at very low temperatures (3) which turn into insulators at very low temperatures (4) which conduct electricity only at super-high temperatures
Last Answer : Whose resistance falls almost to zero at very low temperatures
Description : Nucleotide arrangement in DNA can be seen by (a) X-ray crystallography (b) electron microscope (c) ultracentrifuge (d) light microscope
Last Answer : (a) X-ray crystallography
Description : Which technique has helped in investigation of Calvin cycle? (a) X-ray crystallography (b) X-ray technique (c) Radioactive isotope technique (d) Intermittent light
Last Answer : (c) Radioactive isotope technique
Description : Using X-ray crystallography, this woman scientist determined the structures of large biochemical molecules, including penicillin in 1949 and vitamin B12 in 1956. In 1969 she determined the three ... X-ray techniques of the structures of important biochemical substances." Name this woman scientist.
Last Answer : ANSWER: (DOROTHY) CROWFOOT HODGKIN
Description : $ Morphology deals with the study of external characters of the organisms ! Physiology deals with the study the various functions of a living organism
Last Answer : $ Morphology deals with the study of external characters of the organisms ! Physiology deals with the study the ... D. If both As and R are wrong.
Description : What is morphology the study of?
Last Answer : The form and structure of organisms without consideration offunction.
Description : Study of origin, classification, morphology of soil is known as
Last Answer : Ans. Pedology
Description : Which of the following branches of science is concerned with the study of the relationship of plants to their environment? (a) Cytology (b) Ecology (c) Morphology (d) Physiology
Last Answer : Ans:(b)
Description : The science which deals with study of manners and customs of people is ? A. Ethnology (Answer) B. Morphology C. Ethics D. Genetics E. None of these
Last Answer : A. Ethnology (Answer)
Description : Study of internal structure of plant- (a) Morphology (b) Anatomy (c) Cology (d) Taxonomy
Last Answer : (b) Anatomy
Description : Has cryogenics been proven effective yet?
Last Answer : No, and it never will be. When you’re dead, you’re dead. End of story.
Description : Flowering dependent on cold treatment is (a) cryotherapy (b) cryogenics (c) cryoscopy (d) vernalisation.
Last Answer : (d) vernalisation.
Description : Study of atmospheric phenomena is called (1) Astrology (2) Meteorology (3) Seismology (4) Astronomy
Last Answer : Meteorology
Description : Gender studies refer to the academic study of the phenomena of a. Gender. b. Sex. c. Patriarchy. d. None of these.
Last Answer : a. Gender.
Description : The Method section of the research plan typically specifies EXCEPT; a. The research participants b. The results of prior studies that address the phenomena of interest c. The apparatus, instruments, and materials for the research study d. The planned research procedures
Last Answer : b. The results of prior studies that address the phenomena of interes
Description : The direction of heat flow between two objects depends on - (1) Their masses (2) Their heat contents (3) Their temperatures (4) Whether they are in solid, liquid or gaseous state
Last Answer : (3) Their temperatures Explanation: Heat always flows from a body at higher temperature to a body at a lower temperature.
Description : Pick out the wrong statement. (A) A particular chemical reaction is more temperature sensitive at low temperatures (B) A very high value of equilibrium constant, K (K >> 1) indicates that the ... ) Non-ideal flow takes place in reactors due to recycling, channeling or by creation of stagnant regions
Last Answer : (C) The intercept of the Arrhenius plot is called the 'activation energy
Description : What ice melt will be effective on my driveway at very low temperatures, while doing very little damge to my lawn.
Last Answer : Kitty litter works but it is expensive.
Description : Thermocouple is suitable for measuring (A) Liquid temperatures only (B) Very high temperatures only (C) Very low temperatures only (D) Both high and low temperatures
Last Answer : (D) Both high and low temperatures
Description : For a dielectric which of the following properties hold good? a) They are superconductors at high temperatures b) They are superconductors at low temperatures c) They can never become a superconductor d) They have very less dielectric breakdown voltage
Last Answer : b) They are superconductors at low temperatures
Description : Hyperthermophiles are micro organism which live at ____________. a) temperatures between 80^o-122^0 c)cold desert b) very low temperatures d)salt water lake
Last Answer : a) temperatures between 80^o-122^0
Description : Materials, whose resistivity at very low temperatures plunges from a finite value to zero and remains there upon further cooling, are known as
Last Answer : Materials, whose resistivity at very low temperatures plunges from a finite value to zero and remains there upon further cooling, are known as Superconductors
Description : Which of the following principle is used to produce low-temperatures'? (1) Super conductivity (2) Joule-Kelvin effect (3) Thermo-electric effect (4) Adiabatic demagnetization
Last Answer : (4) Adiabatic demagnetization Explanation: Magnetic refrigeration is a cooling technology based on the magnetocaloiic effect. This technique can be used to attain extremely low temperatures, as well as the ... of a suitable material is caused by exposing the material to a changing magnetic field.
Description : Cryogenic is a science deals with - (1) High Temperatures (2) Low Pressure (3) High Pressure (4) Low Temperature
Last Answer : (4) Low Temperature Explanation: Cryogenics is the branch of physics that deals with the production and effects of very low temperatures.
Description : Which of the following principle is used to produce ‘low-temperatures’ ? (1) Super conductivity (2) Joule-Kelvin effect (3) Thermo-electric effect (4) Adiabatic demagneti-sation
Last Answer : Adiabatic demagneti-sation
Description : Phenomena in which a charged body attract uncharged body is called A. electrostatic induction B. electric current C. charge movement D. magnetic induction
Last Answer : electrostatic induction
Description : Eddy currents produced in the core of transformer are responsible for: a. heat loss b. Step up process c. Step down process d. induction phenomena
Last Answer : d. induction phenomena
Description : The information of brilliant colors in a thin soap film is a consequence of the phenomena of - (1) Polarization and interference (2) Diffraction and dispersion (3) Multiple refraction and dispersion (4) Multiple reflection and interference
Last Answer : (4) Multiple reflection and interference Explanation: Light waves reflected by the upper and lower boundaries of a thin film interfere with one another, either enhancing or reducing the reflected light.
Description : Which phenomena shows the particle nature of light? (1) Diffraction (2) Interference (3) Photoelectric effect (4) Polarisation
Last Answer : (3) Photoelectric effect Explanation: The phenomena such as interference, diffraction, and polarization can only be explained when light is treated as a wave whereas photoelectric effect, line spectra, and the production and scattering of x rays demonstrate the particle nature of light.
Description : Eclipses occur due to which optical phenomena? (1) Reflection (2) Refraction (3) Rectilinear propagation (4) Diffraction
Last Answer : (3) Rectilinear propagation Explanation: An eclipse is an astronomical event that occurs when an astronomical object is temporarily obscured, either by passing into the shadow of another body or by having ... a wave property which states that waves propagate (move or spread out) in straight lines.
Description : Phenomena in which signal transmitted in one circuit creates undesired effect in other circuit is known as A. crosstalk B. signal attenuation C. sampling D. crosslinking
Last Answer : crosslinking
Description : A far-sighted person, without optical correction, is typically able to see nearby objects more clearly in bright light. The reason for this phenomena is: w) bright light provides better ... bright light causes squinting which flattens the eyeball which tends to correct the far-sighted condition.
Last Answer : ANSWER: X -- THE PUPIL OF THE EYE NARROWS WHICH INCREASES THE DEPTH OF FOCUS
Description : As an individual fires a shotgun, a recoil will be experienced. Which of Newton's laws would best describe this phenomena?
Last Answer : ANSWER: NEWTON'S THIRD LAW
Description : A pendulum which is suspended from the ceiling of a railroad car is observed to hang at an angle of 10 degrees to the left of vertical. Which of the following answers could explain this phenomena? w ... is moving with constant velocity to the right. z) The railroad car is accelerating to the right.
Last Answer : ANSWER: Z -- THE RAILROAD CAR IS ACCELERATING TO THE RIGHT.
Description : Which of the following phenomena suggest that light may be a transverse wave? w) reflection x) polarization y) photoelectric effect z) diffraction
Last Answer : ANSWER: X -- POLARIZATION
Description : A pendulum which is suspended from the ceiling of a railroad car is observed to hang at an angle of 10 degrees to the right of vertical. Which of the following answers could explain this phenomena? ... is moving with constant velocity to the right. z) The railroad car is accelerating to the right.
Last Answer : ANSWER: X -- THE RAILROAD CAR IS ACCELERATING TO THE LEFT.
Last Answer : Rectilinear propagation
Description : Pick out the wrong statement. (A) Mechanical agitation is required, if the system has low interfacial tension (B) Sieve tray towers are generally used for systems having low ... Prandtl analogy for heat and mass transfer considers the transfer through both laminar and turbulent layers
Last Answer : (A) Mechanical agitation is required, if the system has low interfacial tension
Description : Double pipe heat exchangers are preferably useful, when (A) High viscosity liquid is to be cooled (B) Requirement of heat transfer area is low (C) Overall heat transfer co-efficient is very high (D) A corrosive liquid is to be heated
Last Answer : (B) Requirement of heat transfer area is low
Description : Double pipe heat exchangers are used (A) When heat transfer area required is very high (B) When heat transfer area required is very low, i.e. (100-200 ft 2 ). (C) Because it occupies less floor area (D) Because it is less costly
Last Answer : (B) When heat transfer area required is very low, i.e. (100-200 ft 2 )
Description : The Dittus-Boelter equation for convective heat transfer [(i.e. h = 0.023 (K/D) (Re) 0.8 (Pr) 0.4 ] cannot be used for (A) Low Reynold's number (B) Very low Grashoff number (C) Molten metals (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : A Backward Child Is A Slow Learner. He Does Not Respond Satisfactorily To The Ordinary School Curriculum And To The Usual Methods. The Causes Of This Phenomena Are Options: A) Poor Intellectual Ability And Low Intelligence B) Physical Defects And Diseases C) Emotional Disturbance D) All Of The Above
Last Answer : D) All Of The Above
Description : The snow on the mountains does NOT melt all at once when it is heated by the sum because: (1) It becomes very hard (2) It reflects most of the heat from the sum (3) it has a low specific heat capacity (4) it has a high latent heat of fusion
Last Answer : (2) It reflects most of the heat from the sum Explanation: Newly formed snow reflects about 90 per cent of the sunlight that falls upon it. This means that the sun is powerless to melt clean snow. And when ... on a spring day because of the sun's heat. It melts because of the warm air from the sea.