Pipelines in cold countries often burst in winter, because – (1) Water freezes and expands in its volume (2) Temperature of ice is less than that of water (3) Pipelines contract in their volume (4) Pipelines expand due to freezing

Pipelines in cold countries often burst in winter, because – (1) Water freezes and expands in its volume (2) Temperature of ice is less than that of water (3) Pipelines contract in their volume (4) Pipelines expand due to freezing
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(1) Water freezes and expands in its volume Explanation: Water expands on freezing. When liquid water is cooled, it contracts like one would expect until a temperature of approximately 4 degrees Celsius is reached. After that, it expands slightly until it reaches the freezing point, and then when it freezes it expands by approximately 9%. The fact that water expands upon freezing causes icebergs to float.
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Pipelines in cold countries often burst in winter, because (1) water freezes and expands in its volume (2) temperature of ice is less than that of water (3) pipelines contract in their volume (4) pipelines expand due to freezing

Description : Pipelines in cold countries often burst in winter, because (1) water freezes and expands in its volume (2) temperature of ice is less than that of water (3) pipelines contract in their volume (4) pipelines expand due to freezing

Last Answer : water freezes and expands in its volume

Water pipes in hilly areas often burst on a cold frosty night, because – (1) The material of which pipes are made contracts due to cold and so breaks (2) Water in the pipes freezes and on freezing water expands, so pipes break (3) Frost makes the pipes rusty, so they break (4) None of these

Description : Water pipes in hilly areas often burst on a cold frosty night, because – (1) The material of which pipes are made contracts due to cold and so breaks (2) Water in the pipes freezes and on freezing water expands, so pipes break (3) Frost makes the pipes rusty, so they break (4) None of these

Last Answer : (2) Water in the pipes freezes and on freezing water expands, so pipes break Explanation: The temperature may fall below 0° C during cold frosty nights which converts the water inside the pipes into ice, ... in an increase in volume. This exerts great force on the pipes and as a result, they burst.

Water pipes in hilly areas often burst on a cold frosty night, because (1) the material of which pipes are made contracts due to cold and so breaks (2) water in the pipes freezes and on freezing water expands, so pipes break (3) frost makes the pipes rusty, so they break (4) None of these

Description : Water pipes in hilly areas often burst on a cold frosty night, because (1) the material of which pipes are made contracts due to cold and so breaks (2) water in the pipes freezes and on freezing water expands, so pipes break (3) frost makes the pipes rusty, so they break (4) None of these

Last Answer : water in the pipes freezes and on freezing water expands, so pipes break

In severe winter, in cold countries water pipes burst because – (1) Water expands on freezing (2) Contraction of water pipes (3) High atmospheric pressure (4) Combined effect of all the above three

Description : In severe winter, in cold countries water pipes burst because – (1) Water expands on freezing (2) Contraction of water pipes (3) High atmospheric pressure (4) Combined effect of all the above three

Last Answer : (1) Water expands on freezing Explanation: Most liquids have a quite simple behavior when they are cooled (at a fixed pressure): they shrink. The liquid contract as it is cooled; ... substance solidifies, which causes it to contract some more because crystalline solids are usually tightly packed.

In severe winter, in cold countries water pipes burst because (1) water expands on freezing (2) contraction of water pipes (3) high atmospheric pressure (4) combined effect of all the above three

Description : In severe winter, in cold countries water pipes burst because (1) water expands on freezing (2) contraction of water pipes (3) high atmospheric pressure (4) combined effect of all the above three

Last Answer : water expands on freezing

Water on heating from 1 to 4°C (A) Contracts (B) Expands (C) Has same volume (D) May contract or expand

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

Water expands when it freezes. Ice takes up more space than water. Where do I find the formula?

Description : Water expands when it freezes. Ice takes up more space than water. Where do I find the formula?

Last Answer : answer:If it’s not homework, use your common sense. Leave an inch or so unfilled. Less is more initially, so freeze the first batch with slightly less than seems safe and observe the results. Remember your experiences with the ice tray and how the cubes expand.

When water is filled in a bottle and is allowed to freeze, the bottle breaks because _____? A. Water expands on freezing B. Bottle contracts at freezing point C. Temperature outside the bottle is less than that inside the bottle D. None of them

Description : When water is filled in a bottle and is allowed to freeze, the bottle breaks because _____? A. Water expands on freezing B. Bottle contracts at freezing point C. Temperature outside the bottle is less than that inside the bottle D. None of them

Last Answer : ANSWER: A

When water is filled in a bottle and is allowed to freeze, the bottle breaks because A. Water expands on freezing (Answer) B. Bottle contracts at freezing point C. temperature outside the bottle is less than that inside the bottle. D. None of the above

Description : When water is filled in a bottle and is allowed to freeze, the bottle breaks because A. Water expands on freezing (Answer) B. Bottle contracts at freezing point C. temperature outside the bottle is less than that inside the bottle. D. None of the above

Last Answer : A. Water expands on freezing (Answer)

(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 an odorless, colourless, syrupy, sweettasting liquid. Ethylene glycol is toxic, and ingestion can result in death. Due to its low freezing point ethylene glycol resists freezing. A mixture of 60% ethylene glycol and 40% water freezes at -45 degree C (- 49 degree F).

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

A pyrex tumbler does not crack when hot water is poured into it because pyrex (a) is a strong material (b) does not expand much on heating (c) is a good conductor of heat (d) expands equally from inside and outside

Description : A pyrex tumbler does not crack when hot water is poured into it because pyrex (a) is a strong material (b) does not expand much on heating (c) is a good conductor of heat (d) expands equally from inside and outside

Last Answer : Ans:(b)

Plants are killed in winter by frost because (a) No photosynthesis occurs at low temperature (b) Of desiccation (c) Water in the plants freezes (d) Water in the plants evaporates

Description : Plants are killed in winter by frost because (a) No photosynthesis occurs at low temperature (b) Of desiccation (c) Water in the plants freezes (d) Water in the plants evaporates

Last Answer : Ans:(b)

What area around it so has a high concentration of sodium ions are the result the cell membrane expands and burst which problem was the cell most likely having?

Description : What area around it so has a high concentration of sodium ions are the result the cell membrane expands and burst which problem was the cell most likely having?

Last Answer : What is the answer ?

Why when water in the crack in rocks freezes and expand?

Description : Why when water in the crack in rocks freezes and expand?

Last Answer : Water will expand when heated. It it will also expand when frozen. Water seeping into narrow cracks in rock, could, when becoming frozen in winter, expand and force the narrow crack to become wider.

A stress which develops within an object when it attempts to expand or contract in response to a temperature changes, but cannot, due to being held rigidly in place.  a. elongation  b. thermal stress  c. expansion contraction  d. thermal expansion

Description : A stress which develops within an object when it attempts to expand or contract in response to a temperature changes, but cannot, due to being held rigidly in place.  a. elongation  b. thermal stress  c. expansion contraction  d. thermal expansion

Last Answer : thermal stress

When it is cold I expand and when it is warm I contract. What am I? -Riddles

Description : When it is cold I expand and when it is warm I contract. What am I? -Riddles

Last Answer : Water/ice.

In cold countries alcohol is preferred to mercury as a thermometric liquid because (a) alcohol is a better conductor of heat (b) alcohol can be coloured and its level seen easily (c) alcohol has a lower freezing point than mercury (d) alcohol is cheaper than mercury

Description : In cold countries alcohol is preferred to mercury as a thermometric liquid because (a) alcohol is a better conductor of heat (b) alcohol can be coloured and its level seen easily (c) alcohol has a lower freezing point than mercury (d) alcohol is cheaper than mercury

Last Answer : Ans:(c)

live in area code 29464. Is it too late to cut back oleanders. They look pretty bad due to repeat freezes this winter.

Description : live in area code 29464. Is it too late to cut back oleanders. They look pretty bad due to repeat freezes this winter.

Last Answer : Need Answer

If water is warmed from 0 degrees Celsius to 6 degrees Celsius, which of the following things happen. Will the water: w) expand steadily x) contract steadily y) expand at first and then contract z) contract first then expand

Description : If water is warmed from 0 degrees Celsius to 6 degrees Celsius, which of the following things happen. Will the water: w) expand steadily x) contract steadily y) expand at first and then contract z) contract first then expand

Last Answer : ANSWER: Z -- CONTRACT FIRST THEN EXPAND

Why water pipes burst in a cold country ?

Description : Why water pipes burst in a cold country ?

Last Answer : Water pipes rupture in cold countries because: When water freezes and freezes in cold countries, there are many difficulties to increase its volume. As the ice melts, the volume increases, so more pressure is felt on the water pipe and it breaks. This is because there is no air inside the pipe.

When hot liquid is poured into a thick glass tumbler, it cracks because glass – (1) is a bad conductor of heat so only inner surface expands (2) has high temperature coefficient of expansion (3) has a very low specific heat (4) has low temperature coefficient of expansion

Description : When hot liquid is poured into a thick glass tumbler, it cracks because glass – (1) is a bad conductor of heat so only inner surface expands (2) has high temperature coefficient of expansion (3) has a very low specific heat (4) has low temperature coefficient of expansion

Last Answer : (1) is a bad conductor of heat so only inner surface expands Explanation: When hot liquid is poured into a thick glass tumbler, it cracks because glass is a bad conductor of heat so only inner surface expands.

When hot liquid is poured into a thick glass tumbler, it cracks because glass : (1) is a bad conductor of heat so only inner surface expands (2) has high temperature coefficient of expansion (3) has a very low specific heat (4) has low temperature coefficient of expansion

Description : When hot liquid is poured into a thick glass tumbler, it cracks because glass : (1) is a bad conductor of heat so only inner surface expands (2) has high temperature coefficient of expansion (3) has a very low specific heat (4) has low temperature coefficient of expansion

Last Answer :  is a bad conductor of heat so only inner surface expands 

The water from a hand pump is warm in winter because - (1) our body is cold in winter and the water appears to be warm (2) the temperature inside the Earth is higher than the atmospheric temperature (3) the pumping process causes friction which warms up the water (4) inside water comes out and absorbs heat from the environment

Description : The water from a hand pump is warm in winter because - (1) our body is cold in winter and the water appears to be warm (2) the temperature inside the Earth is higher than the atmospheric ... causes friction which warms up the water (4) inside water comes out and absorbs heat from the environment

Last Answer : (2) the temperature inside the Earth is higher than the atmospheric temperature

The water from a hand pump is warm in winter because – (1) Our body is cold in winter and the water appears to be warm (2) The temperature inside the earth is higher than the atmospheric temperature (3) The pumping process causes friction which warms up the water (4) Inside water comes out and absorbs heat from the environment

Description : The water from a hand pump is warm in winter because - (1) Our body is cold in winter and the water appears to be warm (2) The temperature inside the earth is higher than the atmospheric ... causes friction which warms up the water (4) Inside water comes out and absorbs heat from the environment

Last Answer : (2) The temperature inside the earth is higher than the atmospheric temperature Explanation: In winter, the outside temperature is lower than that of water flowing out of the pump, and therefore, the ... the outside temperature is higher than the water of the pump, and therefore, it feels cold.

The water from a hand pump is warm in winter because – (1) Our body is cold in winter and the water appears to be warm (2) The temperature inside the earth is higher than the atmospheric temperature (3) The pumping process causes friction which warms up the water (4) Inside water comes out and absorbs heat from the environment

Description : The water from a hand pump is warm in winter because - (1) Our body is cold in winter and the water appears to be warm (2) The temperature inside the earth is higher than the atmospheric ... causes friction which warms up the water (4) Inside water comes out and absorbs heat from the environment

Last Answer : (2) The temperature inside the earth is higher than the atmospheric temperature Explanation: In winter, the outside temperature is lower than that of water flowing out of the pump, and therefore, the ... the outside temperature is higher than the water of the pump, and therefore, it feels cold.

The water from a hand pump is warm in winter because (1) Our body is cold in winter and the water appears to be warm (2) The temperature inside the earth is higher than the atmospheric temperature (3) The pumping process causes friction which warms up the water (4) Inside water comes out and absorbs heat from the environment

Description : The water from a hand pump is warm in winter because (1) Our body is cold in winter and the water appears to be warm (2) The temperature inside the earth is higher than the atmospheric ... causes friction which warms up the water (4) Inside water comes out and absorbs heat from the environment

Last Answer : The temperature inside the earth is higher than the atmospheric temperature

In order to use a substance to make a thermometer the substance must _________ with a temperature change.  a. expand  b. contract  c. change  d. increase

Description : In order to use a substance to make a thermometer the substance must _________ with a temperature change.  a. expand  b. contract  c. change  d. increase

Last Answer : change

What do you do with a principal who sent (if fact) student home without his winter coat in the freezing cold?

Description : What do you do with a principal who sent (if fact) student home without his winter coat in the freezing cold?

Last Answer : I don’t know of any school that releases a child early without parental pickup. My immediate thought is “What did the parent do about it?”

The absolute zero is a temperature at which ______. (1) molecular motion in a gas would cease (2) water freezes (3) all gases become liquid (4) all gases become solid

Description : The absolute zero is a temperature at which ______. (1) molecular motion in a gas would cease (2) water freezes (3) all gases become liquid (4) all gases become solid

Last Answer : (1) molecular motion in a gas would cease Explanation: Absolute zero is the lowest possible temperature where nothing could be colder and no heat energy remains in a substance.

The absolute zero is a temperature at which ______. (1) molecular motion in a gas would cease (2) water freezes (3) all gases become liquid (4) all gases become solid

Description : The absolute zero is a temperature at which ______. (1) molecular motion in a gas would cease (2) water freezes (3) all gases become liquid (4) all gases become solid

Last Answer : (1) molecular motion in a gas would cease Explanation: Absolute zero is the lowest possible temperature where nothing could be colder and no heat energy remains in a substance. It is the point at which all motion in matter stops.

The absolute zero is a temperature at which - (1) Molecular motion in a gas would cease (2) Water freezes (3) All gases become liquid (4) All gases become solid

Description : The absolute zero is a temperature at which - (1) Molecular motion in a gas would cease (2) Water freezes (3) All gases become liquid (4) All gases become solid

Last Answer : (1) Molecular motion in a gas would cease Explanation: Absolute zero is the lowest possible temperature where nothing could be colder and no heat energy remains in a substance. That temperature Molecular motion in a gas would cease.

The absolute zero is a temperature at which _______ (1) molecular motion in a gas would cease (2) water freezes (3) all gases become liquid (4) all gases become solid

Description : The absolute zero is a temperature at which _______ (1) molecular motion in a gas would cease (2) water freezes (3) all gases become liquid (4) all gases become solid

Last Answer : molecular motion in a gas would cease

Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because (A) Its calorific value is very less (B) Tar neutralises the residual acids present in pitch (C) It reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop (D) All (A), (B) and (C)

Description : Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because (A) Its calorific value is very less (B) Tar neutralises the residual acids ... for its transportation through pipelines at economic pressure drop (D) All (A), (B) and (C)

Last Answer : (C) It reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop

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 : 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.

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 : 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 : 4°C

Is it true if you let air out of a bicycle tire the valve becomes cold. This is because when a gas under pressure expands it releases energy to the environment?

Description : Is it true if you let air out of a bicycle tire the valve becomes cold. This is because when a gas under pressure expands it releases energy to the environment?

Last Answer : Feel Free to Answer

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

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

1m3 of an ideal gas at 500 K and 1000 kPa expands reversibly to 5 times its initial volume in an insulated container. If the specific heat capacity (at constant pressure) of the gas is 21 J/mole . K, the final temperature will be (A) 35 K (B) 174 K (C) 274 K (D) 154 K

Description : 1m3 of an ideal gas at 500 K and 1000 kPa expands reversibly to 5 times its initial volume in an insulated container. If the specific heat capacity (at constant pressure) of the gas is 21 J/mole . K, the final temperature will be (A) 35 K (B) 174 K (C) 274 K (D) 154 K

Last Answer : (C) 274 K

Where do the ducks go when the lagoon or lake freezes during winter?

Description : Where do the ducks go when the lagoon or lake freezes during winter?

Last Answer : Most ducks, geese, and cranes migrate to warmer climates as temps in their natural habitats drop, so by the time the lake is frozen, they've been long gone. That's why in the southern states, ... left Canada and the Northeastern U.S. and moved to the warmer gulf coast marshes, and other waterways.

will a bouganvilla that freezes back every winter ever bloom

Description : will a bouganvilla that freezes back every winter ever bloom

Last Answer : Need Answer

Garlic freezes over the winter?

Description : I heard somewhere that garlic is being planted in the autumn, is that true?

Last Answer : Does not freeze

Disc compensators are provided in large diameter fuel gas carrying pipelines to (A) Keep the pipe in proper orientation (B) Make the pipe joint leak-proof (C) Account for contraction/expansion of pipe due to temperature changes of the surroundings (D) Account for the pressure variation side the pipeline

Description : Disc compensators are provided in large diameter fuel gas carrying pipelines to (A) Keep the pipe in proper orientation (B) Make the pipe joint leak-proof (C) Account for contraction/expansion ... due to temperature changes of the surroundings (D) Account for the pressure variation side the pipeline

Last Answer : (C) Account for contraction/expansion of pipe due to temperature changes of the surroundings

Why the bacterium Treponemapallidum is difficult to culture? A-.Because it requires a great deal of water to reproduce B- .Because it is unable to use carbohydrates as an energy source C- Because it lacks the genes needed for TCA cycle and oxidative phosphorylation D- Because it requires extremely low temperature at which water freezes

Description : Why the bacterium Treponemapallidum is difficult to culture? A-.Because it requires a great deal of water to reproduce B- .Because it is unable to use carbohydrates as an energy source ... TCA cycle and oxidative phosphorylation D- Because it requires extremely low temperature at which water freezes

Last Answer : Because it lacks the genes needed for TCA cycle and oxidative phosphorylation

It is easy to burst a gas-filled balloon with a needle than with a nail. It is because – (1) nail is more longer than needle. (2) nail exerts more pressure than needle on the balloon. (3) needle exerts more pressure than nail on the balloon. (4) gas is reactive with the needle.

Description : It is easy to burst a gas-filled balloon with a needle than with a nail. It is because – (1) nail is more longer than needle. (2) nail exerts more pressure than needle on the balloon. (3) needle exerts more pressure than nail on the balloon. (4) gas is reactive with the needle.

Last Answer : (3) needle exerts more pressure than nail on the balloon. Explanation: It is easy to burst a gas-filled balloon with a needle than with a nail because the needle applies more pressure than nail. Besides, ... tip of the needle, so only a little force gives a lot of pressure (pressure = force/area).

It is easy to burst a gas-filled balloon with a neelde than with a nail. It is because (1) nail is more longer than needle. (2) nail exerts more pressure than needle on the balloon. (3) needle exerts more pressure than nail on the balloon. (4) gas is reactive with the needle.

Description : It is easy to burst a gas-filled balloon with a neelde than with a nail. It is because (1) nail is more longer than needle. (2) nail exerts more pressure than needle on the balloon. (3) needle exerts more pressure than nail on the balloon. (4) gas is reactive with the needle.

Last Answer : needle exerts more pressure than nail on the balloon.

Which of the following is/are true? A. Because of its thickness, the tensile strength of a healing wound on the eyelid is much less than one on the thick skin of the back. B. By 2 days, the experimental burst strength of skin is minimal since collagen has been formed in the wound but has not yet cross-linked. C. Wound strength reaches a plateau by 3 weeks. D. Wounds rarely, if ever, regain the strength of intact tissues.

Description : Which of the following is/are true? A. Because of its thickness, the tensile strength of a healing wound on the eyelid is much less than one on the thick skin of the back. B. By 2 days, ... strength reaches a plateau by 3 weeks. D. Wounds rarely, if ever, regain the strength of intact tissues.

Last Answer : Answer: BD DISCUSSION: Tensile strength measures load per cross-section area at rupture, whereas burst strength measures load required to break a wound, regardless of dimension. Therefore, skin wounds have ... a slower rate for more than a year. Wounds do not regain the strength of normal tissue

A gas thermometer is more sensitive than a liquid thermometer because a gas: (1) is lighter than liquid (2) expands more than a liquid (3) is easy to obtain (4) does not change state easily

Description : A gas thermometer is more sensitive than a liquid thermometer because a gas: (1) is lighter than liquid (2) expands more than a liquid (3) is easy to obtain (4) does not change state easily

Last Answer : (4) does not change state easily Explanation: Gas is easily compressed so it would have a more versatile range of measurement at least in our atmospheric conditions. Liquid is not so ... apparatus is a constant volume thermometer. Gas thermometers are often used to calibrate other thermometers.

A gas thermometer is more sensitive than a liquid thermometer because a gas : (1) is lighter than liquid (2) expands more than a liquid (3) is easy to obtain (4) does not change state easily

Description : A gas thermometer is more sensitive than a liquid thermometer because a gas : (1) is lighter than liquid (2) expands more than a liquid (3) is easy to obtain (4) does not change state easily

Last Answer : does not change state easily

If water contracts on freezing, which of the following would happen? (a) Icebergs will completely float on the surface of water (b) Ice would become more dense (c) Lakes would freeze from top to bottom (d) Rocks will crack due to freezing of internal water

Description : If water contracts on freezing, which of the following would happen? (a) Icebergs will completely float on the surface of water (b) Ice would become more dense (c) Lakes would freeze from top to bottom (d) Rocks will crack due to freezing of internal water

Last Answer : Ans:(b)

An egg sinks in soft water but floats in a concentrated solution of salt because – (1) Egg absorbs salt from the solution and expands (2) Albumin dissolves in salt solution and egg becomes lighter (3) The density of salt solution exceeds the density of eggs (4) Water has high surface tension

Description : An egg sinks in soft water but floats in a concentrated solution of salt because – (1) Egg absorbs salt from the solution and expands (2) Albumin dissolves in salt solution and egg becomes lighter (3) The density of salt solution exceeds the density of eggs (4) Water has high surface tension

Last Answer : (3) The density of salt solution exceeds the density of eggs Explanation: Following the density principle, the density of the egg compared to the density of the tap water is lesser (the density principle ... and that is why an egg sinks in soft water but floats in a concentrated solution of salt.