Description : Hot air balloons float in air because of the low density of the air inside the balloon. Explain this with the help of an appropriate gas law.
Last Answer : Hot air balloons float in air because of the low density of the air inside the balloon. Explain this with the help of an appropriate gas law.
Description : A steel ball floats on mercury because (a) mercury does not allow any metallic ball to sink in it (b) mercury is also a metal in the liquid form (c) the density of mercury is higher than that of steel (d) a steel ball can be made to float on any liquid by suitable adjustment
Last Answer : Ans:(c)
Description : A large ship can float but a steel needle sinks because of (a) Viscosity (b) Surface tension (c) Density (d) None of these
Last Answer : Ans:(d)
Description : Ice float on water because its density is (1) more than water (2) less than water (3) zero (4) same as water
Last Answer : (2) less than water Explanation: Archimedes' Principle states that for an object to floaton water, it must displace an equal amount of water. Ice floats because it is about 9% less dense than liquid water.
Description : Clouds float in the atmosphere because of their – (1) low pressure (2) low density (3) low viscosity (4) low temperature
Last Answer : (2) low density Explanation: The key to why clouds float is that the density of the same volume of cloud material is less than the density of the same amount of dry air. Just as oil floats on water ... it is less dense, clouds float on air because the moist air in clouds is less dense than dry air.
Description : The clouds float in the atmosphere because of their low: (1) temperature (2) velocity (3) pressure (4) density
Last Answer : (4) density Explanation: Clouds generally form, survive and grow in air that is moving upward. Rising air expands as the pressure on it decreases, and that expansion into thinner, high-altitude air causes cooling.
Description : Washability curve based on float and sink test enables an assessment to be made of the possibility of cleaning a coal fraction based on the (A) Density separation (B) Differential wettability (C) Size (D) Volatile matter content
Last Answer : (A) Density separation
Description : In case of a Rotameter, the density of the float material is __________ that of the liquid it replaces. (A) More than (B) Less than (C) Equal to (D) Either (A) or (B)
Last Answer : (A) More than
Description : A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal (A) Density of metal can't be determined (B) ... as water (C) Metal will float in water (D) Metal is twice as dense as unknown fluid
Last Answer : (A) Density of metal can't be determined
Description : The density of seawater is greater than that of fresh water. A boat will float: w) Higher in fresh water than in seawater x) Lower in fresh water than in seawater y) At the same level in both z) Any of the above, depending upon its shape
Last Answer : ANSWER: X -- LOWER IN FRESH WATER THAN IN SEAWATER
Description : Clouds float in the atmosphere because of their (1) low pressure (2) low density (3) low viscosity (4) low temperature
Last Answer : low density
Description : How do scientists measure how much stuff is in a specified volume of a substance?
Last Answer : What is the answer ?
Description : If it could be proven one way or another that God is false or that what scientists believe is false, how would it change you?
Last Answer : I suppose I would trust an all-knowing God to know why I believe as I do and why I act as I do. In which case He (or She) would forgive me for not being a believer. It wouldn't change what ... make the world a better place. If Science was proved to be correct, there wouldn't be any problem for me.
Description : ......................... is a scheme or design of something intended to do. a. Network b. Float c. Project d. Program
Last Answer : a. Network
Description : Siberia Seabed Leaks Methane, Threatens Climate, Scientists Say. Who will tell Siberia it's just an Al Gore hoax?
Last Answer : Well, there is a lot if investment in believing there is no global warming. A lot less action has to be taken. A lot less profit has to be lost. A lot fewer curbs on the activities of oil companies and other polluters.
Description : How can scientists tell where the earthquake happened?
Last Answer : With a measuring tape
Description : Which of the following is true in Statistical reasoning? a) The representation is extended to allow some kind of numeric measure of certainty to be associated with each statement b) The ... extended to allow some kind of numeric measure of certainty to be associated common to all statements
Last Answer : a) The representation is extended to allow some kind of numeric measure of certainty to be associated with each statement
Description : Sensor is a physical device used to measure dimensions of the parts. (A) True (B) False
Last Answer : B
Description : Energy monitoring and techniques builds on the principle of ―you can manage what you measure‖. a. true b. false
Last Answer : false
Description : 97.Energy monitoring and techniques builds on the principle of ―you can manage what you measure‖. a. true b. false
Description : Answer the following S. No Statement Chose the correct answer OR Fill-in-the-blanks 1 Fyrite measures CO2, O2 and SO2 True/False 2 Ultrasonic Flow Meter uses the principle of____& ____ Fill in the ... of RPM meter is used and for a visible shaft-end _______ type of RPM meter is used.
Last Answer : Sr No Statement Chose the correct answer OR Fill-in-the-blanks Solution 1 Fyrite measures CO2, O2 and SO2 True/False False 2 Ultrasonic Flow Meter uses the principle of____& ____ ... ] 10 In a gasification system the reduction zone is above the combustion zone True/False False
Description : Scientists can now determine which weather events were caused by, or made worse by, human-produced emissions. Will this finally put to rest the political partisanship over Climate Change -- something which should be matter of science?
Last Answer : No. Because the non-science types (the deniers, the creationist, the god-wills-it types, and the republicans) won’t accept the science, because they think it will be tainted. That population never lets facts get in the way of a belief, no matter how erroneous the belief.
Description : Why don't the scientists do something really helpful like the complete eradication of fleas and other dangerous parasites?
Last Answer : Because compared to GMO corn, there’s no money in it. That’s the short story.
Description : In air, the tangential component of flux density is continuous at the boundary. State True/False. a) True b) False
Last Answer : a) True
Description : The magnetic flux density is directly proportional to the magnetic field intensity. State True/False. a) True b) False
Description : On equating the generic form of current density equation and the point form of Ohm’s law, we can obtain V=IR. State True/False. a) True b) False
Description : The normal component of the electric flux density is always discontinuous at the interface. State True/False. a) True b) False
Description : Electric field of an infinitely long conductor of charge density λ, is given by E = λ/(2πεh).aN. State True/False. a) True b) False
Description : The potential of a uniformly charged line with density λ is given by, λ/(2πε) ln(b/a). State True/False. a) True b) False
Description : 19. The density of a liquid in kg/m3 is numerically equal to its specific gravity. A) True B) False
Last Answer : A
Description : I have heard that scientists are the most non-romantic partners ever. Is it true?
Last Answer : That certainly is the stereotype. Note, I said Stereotype. Please see this example from the TV show Big Bang Theory. Listen carefully to the language used. It is precise and technically correct. Well done. Leonard and Leslie
Description : 1. Which Indian missile is capable of carrying nuclear weapons? 2. Which Scientists has established the Phylum Annelida'? 3. How is the censorship of the press judged? 4. Plants which lack true roots ... identical to those of the earth? 20. Where did the Pallava kings make of rock-cut temples?
Last Answer : Answer : 1. Prithvi 2. Lamark 3. By the test of reasonableness 4. Thallophytes 5. Child marriage 6. Because of Radiation 7. Capital expenditure 8. Agni 9. Gems and Jwellery 10. Maski 11. Emphysama 12. ... 13. Mercury 14. Fertilizers 15. Ashoka 16. Mysore 17. GNP 18. Lead 19. Mars 20. Mahabalipuram
Description : Which instrument is used to measure the density of milk ?
Last Answer : answer:
Description : 1. The extent of complexity and density of ________ can be regarded as a measure of health of an ecosystem.
Last Answer : Fill in the blanks: 1. The extent of complexity and density of ________ can be regarded as a ... . The statement in a key is called a _________.
Description : Which instrument is used to measure the density of milk?
Last Answer : Lactometer
Description : The hygrometer is an instrument to measure (a) the relative density of liquids (b) the purity of milk (c) relative humidity (d) atmospheric pressure
Description : Echo sounding is the technique applied to— (1) measure the depth of the sea (2) measure the amplitude of sound waves (3) record earthquake waves (4) record the density of air in the atmosphere
Last Answer : (1) measure the depth of the sea Explanation: Echo sounding is the technique of using sound pulses to find the depth of water. The interval from the emission of a pulse to reception ... information is then typically used for navigation purposes or in order to obtain depths for charting purposes.
Description : Pycnometer is an instrument used to measure the – (1) Density (2) Intensity of solar radiation (3) Intensity of earthquake (4) High temperatures
Last Answer : (1) Density Explanation: A gas pycnometer is a laboratory device used for measuring the density - or more accurately the volume - of solids, be they regularly shaped, porous or non-porous, ... , employing some method of has displacement and the volume-pressure relationship known as Boyle's Law.
Description : The measure of optical density of the medium is?
Last Answer : Refractive index
Description : Pick out the wrong statement. (A) Fluid movement under the influence of buoyant forces resulting from change in density takes place in case of natural convection (B) The ratio NNu /NRe . Npr is ... convection to that by conduction (D) The Colburn jH factor for heat transfer is given by Nst Npr
Last Answer : (D) The Colburn jH factor for heat transfer is given by Nst Npr
Description : Shatter index of the coke is a measure of its (A) Strength (B) Bulk density (C) Reactivity (D) None of these
Last Answer : (A) Strength
Description : Pick out the wrong statement. (A) Cokes of high reactivity are obtained from weakly coking coals (B) Cokes of high reactivity are obtained from strongly coking coals (C) Reactivity of coke is inversely proportional to its absolute density (D) Abrasion index of the coke is a measure of its hardness
Last Answer : (B) Cokes of high reactivity are obtained from strongly coking coals
Description : "Micum Index" of a coke is a measure of its (A) Reactivity (B) Porosity (C) Bulk density (D) Hardness & strength
Last Answer : (D) Hardness & strength
Description : Pick out the wrong statement. (A) The vessel dispersion number (D/UL) for plug flow and mixed flow approaches zero and infinity respectively (B) Space time in a flow reactor is a ... ideal tubular flow reactor, mixing takes place in radial direction and there is no mixing in longitudinal direction
Last Answer : (C) Mixed reactor is always smaller than the plug flow reactor for all positive reaction orders for a particular duty
Description : Pick up the correct statement from the following: (A) Permeability is a measure of conducting the magnetic lines of force in the material (B) Permeability is a measure of the extent to which magnetic ... magnetic flux density (B) to the field strength of the magnetizing field (D) All of these
Last Answer : Answer: Option D
Description : Which of the following would you measure using a calorimeter? w) specific heat x) weight y) specific gravity z) density
Last Answer : ANSWER: W -- SPECIFIC HEAT
Description : Venturimeter is used to measure: (1) rate of flow of liquids (2) liquid pressure (3) surface tension (4) liquid density
Last Answer : rate of flow of liquids
Description : An instrument used to measure the density of milk is (1) Glactometer (2) Lactometer (3) Calciometer (4) Polarimeter
Description : Pycnometer is an instrument used to measure the (1) density (2) intensity of solar radiation (3) intensity of earthquake (4) high temperatures
Last Answer : density
Description : Echo sounding is the tech-nique applied to— (1) measure the depth of the sea (2) measure the amplitude of sound waves (3) record earthquake waves (4) record the density of air in the atmosphere
Last Answer : measure the depth of the sea