Description : The freezing point of fresh water is - (1) 4°C (2) 3°C (3) 5°C (4) 0°C
Last Answer : (4) 0°C Explanation: The freezing point of water is the temperature at which water changes phase from a liquid to a solid. Under normal conditions, ordinary water freezes at 0°C, or 32°F. ... or if there are impurities present in the water which could cause freezing point depression to occur.
Description : The freezing point of fresh water is _______. (1) 4°C (2) 3°C (3) 5°C (4) 0°C
Last Answer : 0°C
Description : A standard ice point temperature corresponds to the temperature of (a) water at 0°C (b) ice at - 4°C (c) mixture of ice, water and vapour under equilibrium conditions under NTP conditions (d) mixture of ice and water Under equilibrium conditions.
Last Answer : Ans: D
Description : Water has maximum density at – (1) -4°C (2) 0°C (3) 4°C (4) 100°C
Last Answer : (3) 4°C Explanation: When cooled from room temperature liquid water becomes increasingly dense, as with other substances, but at approximately 4 °C (39 °F), pure water reaches its maximum density.
Description : At what temperature is the density of water the maximum? (1) 2°C (2) 4°C (3) 0°C (4) 1°C
Last Answer : (2) 4°C Explanation: An especially notable irregular maximum density is that of water, which reaches a density peak at 3.98 °C (39.16 °F).
Description : Water has maximum density at _____? A. 0°C B. 4°c C. 40K D. 4.8°C
Last Answer : ANSWER: B
Description : What happens when water is cooled from 8°C to 0°C? 1. Its volume decreases uniformly, becoming minimum at 0°C. 2. Its density increases uniformly, attaining maximum value at 0°C. 3. Its volume decreases up to 4°C and then increases ... is/are correct? (a) Only 1 (b) Only 2 (c) 3 and 4 (d) 1 and 2
Last Answer : Ans:(c)
Description : The temperature of the top of a frozen lake is – 15°C. What is the temperature of the water in the lake in contact with the ice layer? (a) 0°C (b) 4°C (c) –15°C (d) –7.5°C
Last Answer : Ans:(a)
Description : Water has maximum density at (a) Room temperature (b) 0°C (c) 4°C (d) 100°C
Description : Specific gravity is defined as the ratio of – (1) density of the substance to the density of water (2) density of the substance to the density of water at 0°C (3) density of water at 4°C to the density of the substance (4) density of the substance to the density of water at 4°C
Last Answer : (1) density of the substance to the density of water Explanation: Specific gravity is the ratio of the density of a substance to the density (mass of the same unit volume) of a reference substance. The reference substance is nearly always water for liquids or air for gases.
Description : Water has maximum density at – (1) 100°C (2) 0°C (3) 4°C (4) 273°C
Last Answer : (3) 4°C Explanation: The maximum density of water occurs at 4 °C because at. this temperature, two opposing effects are in balance. Water is an exceptional compound that has a lower density in the ... due to the ion nature of water in the liquid phase, which packs the molecules tightly together.
Description : The density of water is 1 g/cc. This is strictly valid at – (1) 0°C (2) 4°C (3) 25°C (4) 100°C
Last Answer : (2) 4°C Explanation: Water never has an absolute density because its density varies with temperature. Water has its maximum density of 1 g/cm3 at 4 degrees Celsius. When the temperature changes from either greater or ... 1 g/cm3. Water has the maximum density of 1 g/cm3 only when it is pure water.
Description : Lakes freeze in cold countries in winter, leaving the water underneath at – (1) 0°C (2) 0°F (3) 4°C (4) 4°F
Last Answer : (3) 4°C Explanation: Lake ice cover is seasonal and occurs where average daily temperature is below the freezing point. Once formed the lake ice thickens over the course of the winter as the temperature ... 0 (zero) degrees Celsius water at the surface and denser 4 degrees Celsius at the bottom.
Description : Water has maximum density at------? A. 0°C B. 4°C (Answer) C. 4° K D. 4.8°C
Last Answer : B. 4°C (Answer)
Description : Maximum density of water exists at (a) 0°C (b) 4°C (c) 40°C (d) 100°C
Last Answer : (b) 4°C
Description : Water has maximum density at (1) 100°C (2) 0°C (3) 4°C (4) 273°C
Last Answer : 4°C
Description : The density of water is 1 g/cc. This is strictly valid at (1) 0°C (2) 4°C (3) 25°C (4) 100°C
Description : Specific gravity is defined as the ratio of (1) density of the substance to the density of water (2) density of the substance to the density of water at 0°C (3) density of water at 4°C to the density of the substance (4) density of the substance to the density of water at 4°C
Last Answer : density of the substance to the density of water
Description : Lakes freeze in cold countries in winter, leaving the water underneath at (1) 0°C (2) 0°F (3) 4°C (4) 4°F
Description : The boiling point of ammonia is (a) -100°C (b) -50°C (c) - 33.3°C (d) 33.3°C.
Last Answer : Ans: c
Description : The boiling point of ammonia is i. a) -10.5°C. c) -33.3°C p. b) -30°C. d) -77.7°C
Last Answer : -33.3°C p.
Description : Compared to fresh Water, the freezing point of sea water is - (1) Higher (2) Lower (3) Same (4) Depends on the sea from which the water is sourced
Last Answer : (2) Lower Explanation: Ocean water freezes just like freshwater, but at lower temperatures.
Description : Freezing Point of Fresh water is
Last Answer : 00C
Description : The place which experiences minimum and maximum temperature of - 28.3°C and 15°C respectively is: [Railways 1995] (a) Srinagar (b) Shimla (c) Kullu (d) Leh shop.ssbcrack.com
Last Answer : Ans: (d)
Description : Citrus seeds can be stored with Charcoal at following temperature in dry conditions. a. 0-3°C b. 3-10°C c. 10-15°C d. Above 15°C
Last Answer : 3-10°C
Description : Which of the following statements is an interpretation of the METAR? 00000KT 0200 R14/0800U R16/P1500U FZFG VV001 m03/m03 Q1022 BECMG 0800 = a. Meteorological visibility 200m, RVR for ... 800m, vertical visibility 100ft, calm, meteorological visibility improving to 800m in the next 2 hours
Last Answer : d. RVR for runway 14 800m, vertical visibility 100ft, calm, meteorological visibility improving to 800m in the next 2 hours
Description : Which of the following statements is an interpretation of the METAR? 00000KT 0200 R14/0800U R16/P1500U FZFG VV001 m03/m03 Q1022 BECMG 0800 = a. Meteorological visibility 200m, RVR for ... 14 800m, vertical visibility 100ft, calm, meteorological visibility improving to 800m in the next 2 hours
Description : When freezing fresh purple hull peas for later, is it better to freeze them in water or freeze them dry? water
Last Answer : Need Answer
Description : do you have a recipe for freezing , or canning fresh spinach from the garden?
Last Answer : Wash & rinse the spinach well. take off the long stems as they are very hard. Cook the spinach in salted boiling water. Attached to this link is a recipe for basic med white sauce.........in the ... .it is delicious. You also can add some finely chopped chicken and parsley................
Description : Water on heating from 1 to 4°C (A) Contracts (B) Expands (C) Has same volume (D) May contract or expand
Last Answer : (A) Contracts
Description : The density of water at 4°C is a. 1 gm/cm³ b. 2 gm/cm³ c. 3 gm/cm³ d. 4 gm/cm³
Last Answer : 1 gm/cm³
Description : Process of heating milk to 72°C about 16 seconds and then cooling it to 4°C to destroy harmful bacteria is known as?
Last Answer : Chromatography
Description : Chilling injury in plants occurs at a temperature: a.
Last Answer :
Description : For every 4°C raise in air inlet temperature of an air compressor, the power consumption will increases by_____ a) 2% b) 1% c) 3% d) 4%
Last Answer : b) 1%
Description : If the dew point is greater than 0°C (A) Dew will be formed (B) Frost will be formed (C) Vapours will be formed (D) None of these
Last Answer : Answer: Option A
Description : Compound (A) when reacted with PCl5 and then with ammonia gave (B). Compound (B) when treated with bromine and NaOH, produced (C). Compound (C) on treatment with NaNO2/HCl at 0°C and then boiling with H2O ... Compound (A) is (a) o-Toluic acid (b) o-Chlorotoluene (c) m-Toluic acid (d) o-Bromotoluene
Last Answer : o-Toluic acid
Description : Which of the following are optimum temperature conditions for making benzenediazonium chloride from aniline? (a) 0°C to 10°C (b) 20°C to 25°C (c) 30°C to 40°C (d) 45°C to 50°C
Last Answer : 0°C to 10°C
Description : (3) prevents freezing of petrol Explanation: Ethylene glycol (IUPAC name: ethane-1,2-diol) is an organic compound widely used as an automotive antifreeze and a precursor to polymers. In its pure form, it is ... A mixture of 60% ethylene glycol and 40% water freezes at -45 degree C (- 49 degree F).
Last Answer : Rust is - (1) A mixture of Fe₂O₃ and Fe(OH) ₂ (2) A mixture of FeO and Fe(OH)₂ (3) FeO only (4) A mixture of Fe₂O₃, 3H₂O and FeO
Description : In cold countries ethylene glycol is added to water in car radiators. This helps to (a) Reduce the viscosity (b) Make water a better lubricant (c) Lower the freezing point (d) Lower the boiling poin
Last Answer : Lower the freezing point
Description : In Celsius, the freezing point of a one-molal water solution of sodium phosphate, chemical formula Na3PO4, is expected to be: w) - 0.93 degrees Celsius x) - 1.86 degrees Celsius y) - 7.44 degrees Celsius z) - 3.72 degrees Celsius
Last Answer : ANSWER: C -- (- 7.44 DEGREES CELSIUS)
Description : When a solute is dissolved in a pure solvent, the resulting freezing point is: w) higher than pure solvent x) lower than pure solvent y) does not change z) cannot tell from this information
Last Answer : ANSWER: X -- LOWER THAN PURE SOLVENT
Description : Which of the following properties is greater for a solution than for the pure solvent? w) freezing point x) vapor pressure y) temperature z) boiling point
Last Answer : ANSWER: D -- BOILING POINT
Description : Using the phase diagram for H2O, which of the following correctly describes water at 0°C and 1 atm?
Last Answer : At the melting point(Explanation) if you look at the phase diagram and look at the point where the water is 0 degrees C and 1 atm, they meet right on the line. This is the line that shows the melting point ... , since the point is on the line, water at 0 degrees C and 1 atm is at the melting point.
Description : One ton of the refrigeration is (a) the standard unit used in refrigeration problems (b) the cooling effect produced by melting 1 ton of ice (c) the refrigeration effect to freeze 1 ton of water at ... ice at 0°C in 24 hours (d) the refrigeration effect to produce 1 ton of ice at NTP conditions
Description : Pick up the incorrect statement (a) lithium bromide used in vapour absorption cycle is nonvolatile (b) lithium bromide plant can't operate below 0°C (c) a separator is used in lithium ... of solution coming out of lithium bromide generator is more in comparison to that entering the generator
Description : What happens when the temperature of water falls from 30°C and 0°C? (a) The volume of ice formed will be less than volume of water (b) The volume of ice formed will be more than the volume of water (c) Water will not freeze at 0°C (d) None of the above
Last Answer : Ans:(b)
Description : When heated from 0°C to 100°C volume of a given mass of water will – (1) Increase gradually (2) Decrease gradually (3) Increase and then will decrease (4) Decrease and then will Increase
Last Answer : (4) Decrease and then will Increase Explanation: When heated from 00 to 100 C volume of a given mass of water will first decrease and then increase. If the word "ice" or "solid" is not mentioned, the word "water" means liquid water.
Description : Water will not be vaporized if – (1) the temperature is 0°C (2) the humidity is 0% (3) the humidity is 100% (4) the temperature is 100°C
Last Answer : (3) the humidity is 100% Explanation: If the relative humidity is 100 percent, water will not evaporate as the air is already saturated with moisture. When relative humidity approaches 100 percent, condensation can occur. The lower the relative humidity, the easier it is for moisture to evaporate.
Description : When water is heated from 0°C to 10°C. Its volume (1) increases (2) decreases (3) does not change (4) first decreases and then increases
Last Answer : (4) first decreases and then increases
Description : What happens, When water is heated from 0°C to 10°C the volume of water?
Last Answer : First decreases then increases