Lakes freeze in cold countries in winter, leaving the water underneath at (1) 0°C (2) 0°F (3) 4°C (4) 4°F

Lakes freeze in cold countries in winter, leaving the water underneath at (1) 0°C (2) 0°F (3) 4°C (4) 4°F
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4°C
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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.

Lake Freeze in cold countries in winter, leaving the water underneath at

Description : Lake Freeze in cold countries in winter, leaving the water underneath at

Last Answer : 40F

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

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.

The freezing point of fresh water is - (1) 4°C (2) 3°C (3) 5°C (4) 0°C

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.

Water has maximum density at – (1) 100°C (2) 0°C (3) 4°C (4) 273°C

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.

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 : 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.

Water has maximum density at (1) 100°C (2) 0°C (3) 4°C (4) 273°C

Description : Water has maximum density at (1) 100°C (2) 0°C (3) 4°C (4) 273°C

Last Answer : 4°C

The freezing point of fresh water is _______. (1) 4°C (2) 3°C (3) 5°C (4) 0°C

Description : The freezing point of fresh water is _______. (1) 4°C (2) 3°C (3) 5°C (4) 0°C

Last Answer : 0°C

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 : 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 :  4°C

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

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

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.

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

Water has maximum density at _____? A. 0°C B. 4°c C. 40K D. 4.8°C

Description : Water has maximum density at _____? A. 0°C B. 4°c C. 40K D. 4.8°C

Last Answer : ANSWER: B

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 4. Its density increases up to 4°C and then decreases. Which of the above answers is/are correct? (a) Only 1 (b) Only 2 (c) 3 and 4 (d) 1 and 2

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)

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

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)

Water has maximum density at (a) Room temperature (b) 0°C (c) 4°C (d) 100°C

Description : Water has maximum density at (a) Room temperature (b) 0°C (c) 4°C (d) 100°C

Last Answer : Ans:(c)

Water has maximum density at – (1) -4°C (2) 0°C (3) 4°C (4) 100°C

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.

At what temperature is the density of water the maximum? (1) 2°C (2) 4°C (3) 0°C (4) 1°C

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).

The freezing point of fresh water is - (1) 0°C (2) 4°C (3) 3°C (4) 5 C

Description : The freezing point of fresh water is - (1) 0°C (2) 4°C (3) 3°C (4) 5 C

Last Answer : (1) 0°C Explanation: Ocean water freezes just like freshwater, but at lower temperatures. Fresh water freezes at 32 degrees Fahrenheit but seawater freezes at about 28.4 degrees Fahrenheit, because of the salt in it.

Water has maximum density at------? A. 0°C B. 4°C (Answer) C. 4° K D. 4.8°C

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)

Maximum density of water exists at (a) 0°C (b) 4°C (c) 40°C (d) 100°C

Description : Maximum density of water exists at (a) 0°C (b) 4°C (c) 40°C (d) 100°C

Last Answer : (b) 4°C

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 0°C into ice at 0°C in 24 hours (d) the refrigeration effect to produce 1 ton of ice at NTP conditions

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

Last Answer : Ans: c

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

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)

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 : (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 ... it expands by approximately 9%. The fact that water expands upon freezing causes icebergs to float.

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.

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

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

Triple point of water is (A) 0°F (B) 492°R (C) 0°K (D) -273°C

Description : Triple point of water is (A) 0°F (B) 492°R (C) 0°K (D) -273°C

Last Answer : (A) 0°F

Electric motors intended for use outside the engine room and boiler room are frequently rated to run at a designed ambient temperature of 40°C. What is the equivalent temperature in degrees Fahrenheit? A. 54.2°F B. 72.0°F C. 104.0°F D. 129.6°F

Description : Electric motors intended for use outside the engine room and boiler room are frequently rated to run at a designed ambient temperature of 40°C. What is the equivalent temperature in degrees Fahrenheit? A. 54.2°F B. 72.0°F C. 104.0°F D. 129.6°F

Last Answer : Answer: C

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)

Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are (A) 5°C and 1 kgf/cm2 (B) - 20°C and 1 kgf/cm2 (C) 0°C and 1 kgf/cm2 (D) 0°C and 3 kgf/cm

Description : Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are (A) 5°C and 1 kgf/cm2 (B) - 20°C and 1 kgf/cm2 (C) 0°C and 1 kgf/cm2 (D) 0°C and 3 kgf/cm

Last Answer : (A) 5°C and 1 kgf/cm

The temperature condition for storage of drug products under cold temperature is given as : (A) temperature between 8°C and 25°C (B) temperature below 20 C (C) temperature at 0°C (D) temperature between 2c C and S: C

Description : The temperature condition for storage of drug products under cold temperature is given as : (A) temperature between 8°C and 25°C (B) temperature below 20 C (C) temperature at 0°C (D) temperature between 2c C and S: C

Last Answer : (D) temperature between 2c C and S: C

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

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.

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

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.

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

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

Water will not be vapourised if (1) the temperature is 0°C (2) the humidity is 0% (3) the humidity is 100% (4) the temperature is 100°C

Description : Water will not be vapourised 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 : the humidity is 100% 

The term territorial water means – (1) The water found within the country in form of rivers and lakes (2) The water secured from other countries (3) The water which is supplied to other countries (4) Water of the sea located close to the coast of a country

Description : The term territorial water means – (1) The water found within the country in form of rivers and lakes (2) The water secured from other countries (3) The water which is supplied to other countries (4) Water of the sea located close to the coast of a country

Last Answer : (4) Water of the sea located close to the coast of a country Explanation: Territorial waters, or a territorial sea, as defined by the 1982 United Nations Convention on the Law of the Sea ... of the state, although foreign ships (both military and civilian) are allowed innocent passage through it.

The term territorial water means (1) The water found within the country in form of rivers and lakes (2) The water secured from other countries (3) The water which is supplied to other countries (4) Water of the sea located close to the coast of a country

Description : The term territorial water means (1) The water found within the country in form of rivers and lakes (2) The water secured from other countries (3) The water which is supplied to other countries (4) Water of the sea located close to the coast of a country

Last Answer : Water of the sea located close to the coast of a country

0°K, is equivalent to – (1) 273°C (2) -273°C (3) 0°C (4) 100°C

Description : 0°K, is equivalent to – (1) 273°C (2) -273°C (3) 0°C (4) 100°C

Last Answer : (2) -273°C Explanation: 0 degrees Kelvin is equal to - 273.15 degrees Celsius. It is the lowest possible temperature, at which all molecules are have the least possible amount of kinetic energy.

0°K is equivalent to (1) 273°C (2) -273°C (3) 0°C (4) 100°C

Description : 0°K is equivalent to (1) 273°C (2) -273°C (3) 0°C (4) 100°C

Last Answer : (2) -273°C Explanation: 0 degrees Kelvin is equal to - 273.15 degrees Celsius. It is the lowest possible temperature, at which all molecules are have the least possible amount of kinetic energy.

How much mechanical work must be done to completely melt 1 gram of ice at 0°C? (1) 4.2 J (2) 80 J (3) 336 J (4) 2268 J

Description : How much mechanical work must be done to completely melt 1 gram of ice at 0°C? (1) 4.2 J (2) 80 J (3) 336 J (4) 2268 J

Last Answer : (2) 80 J Explanation: When water at 0 degree Celsius freezes, each gram of water gives off 80 calories. The temperature of the water stays at 0 degree C until every drop has frozen. When ... heat-80 calories for each gram of ice-and its temperature remains unchanged until it has completely melted.

0°K is equivalent to (1) 273°C (2) – 273°C (3) 0°C (4) 100°C

Description : 0°K is equivalent to (1) 273°C (2) – 273°C (3) 0°C (4) 100°C

Last Answer :  – 273°C

How much mechanical work must be done to completely melt 1 gram of ice at 0°C ? (1) 4.2 J (2) 80 J (3) 336 J (4) 2268 J

Description : How much mechanical work must be done to completely melt 1 gram of ice at 0°C ? (1) 4.2 J (2) 80 J (3) 336 J (4) 2268 J

Last Answer : 80 J

Which two countries border the Great Lakes?

Description : Which two countries border the Great Lakes?

Last Answer : All five are between Canada and the U.S.

Which two countries border the Great Lakes?

Description : Which two countries border the Great Lakes?

Last Answer : All five are between Canada and the U.S.

Theoretically trade between two countries lakes place on account of - (1) differences In costs (2) scarcity of goods (3) comparative differences in costs (4) need for exports

Description : Theoretically trade between two countries lakes place on account of - (1) differences In costs (2) scarcity of goods (3) comparative differences in costs (4) need for exports

Last Answer : (3) comparative differences in costs Explanation: Trade exists for man clue to specialization and division of labor, most people concentrate on a small aspect of production, trading for other ... for the benefits of mass production thus providing cost advantage of producing the same commodity.

Theoretically trade between two countries lakes place on account of (1) differences in costs (2) scarcity of goods (3) comparative differences in costs (4) need for exports

Description : Theoretically trade between two countries lakes place on account of (1) differences in costs (2) scarcity of goods (3) comparative differences in costs (4) need for exports

Last Answer : comparative differences in costs

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

The density of water at 4°C is  a. 1 gm/cm³  b. 2 gm/cm³  c. 3 gm/cm³  d. 4 gm/cm³

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

Process of heating milk to 72°C about 16 seconds and then cooling it to 4°C to destroy harmful bacteria is known as?

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