Water boils at a lower temperature on the hills because – (1) it is cold on the hills (2) there is less carbon dioxide on the hills (3) there is a decrease in air pressure on the hills (4) There is less oxygen

Water boils at a lower temperature on the hills because – (1) it is cold on the hills (2) there is less carbon dioxide on the hills (3) there is a decrease in air pressure on the hills (4) There is less oxygen
by

1 Answer

Answer :

(3) there is a decrease in air pressure on the hills Explanation: Water boils at a lower temperature on top of a mountain because there is less air pressure on the molecules. Water boils when the vapor pressure of water exceeds atmospheric pressure. Because the boiling temperature is lower at high elevations foods that are cooked by boiling take a little longer to cook at high elevation.
by
selected

Related questions

Water boils at a lower temperature on the hills because (1) it is cold on the hills (2) there is less carbon dioxide on the hills (3) there is a decrease in air pressure on the hills (4) There is less oxygen

Description : Water boils at a lower temperature on the hills because (1) it is cold on the hills (2) there is less carbon dioxide on the hills (3) there is a decrease in air pressure on the hills (4) There is less oxygen

Last Answer : there is a decrease in air pressure on the hills

Water boils at a lower temperature on the hills because – (1) it is cold on the hills (2) there is less carbon dioxide on the hills (3) there is a decrease in air pressure on the hills (4) There is less oxygen

Description : Water boils at a lower temperature on the hills because – (1) it is cold on the hills (2) there is less carbon dioxide on the hills (3) there is a decrease in air pressure on the hills (4) There is less oxygen

Last Answer : (3) there is a decrease in air pressure on the hills Explanation: Water boils at a lower temperature on top of a mountain because there is less air pressure on the molecules. Water boils when the ... at high elevations foods that are cooked by boiling take a little longer to cook at high elevation.

The rice is cooked more quickly in a pressure cooker because – (1) it is covered. (2) less quantity of water is used. (3) None of these (4) water boils at a higher temperature under pressure.

Description : The rice is cooked more quickly in a pressure cooker because – (1) it is covered. (2) less quantity of water is used. (3) None of these (4) water boils at a higher temperature under pressure.

Last Answer : (4) water boils at a higher temperature under pressure. Explanation: The rice can be cooked faster in a pressure cooker since the boiling point of water increases with pressure. In general, the higher the ... of the water in a pressure cooker is higher than temperature of the water in an open pot.

The rice is cooked more quickly in a pressure cooker because (1) it is covered. (2) less quantity of water is used. (3) None of these (4) water boils at a higher temperature under pressure.

Description : The rice is cooked more quickly in a pressure cooker because (1) it is covered. (2) less quantity of water is used. (3) None of these (4) water boils at a higher temperature under pressure.

Last Answer : water boils at a higher temperature under pressure. 

A ball bounces higher at high altitudes than in plains. This is because (a) the pressure on higher altitudes is lower than that in plains (b) Downward pull due to gravity is less at higher altitudes (c) The rarefied air offers less resistance to the ball (d) You become more energetic at hills, so greater the force applied, higher goes the ball.

Description : A ball bounces higher at high altitudes than in plains. This is because (a) the pressure on higher altitudes is lower than that in plains (b) Downward pull due to gravity is less at higher altitudes ... ball (d) You become more energetic at hills, so greater the force applied, higher goes the ball.

Last Answer : Ans:(a)

The rice is cooked more quickly in a pressure cooker because – (1) it is covered. (2) less quantity of water is used. (3) None of these (4) water boils at a higher temperature under pressure.

Description : The rice is cooked more quickly in a pressure cooker because – (1) it is covered. (2) less quantity of water is used. (3) None of these (4) water boils at a higher temperature under pressure.

Last Answer : (4) water boils at a higher temperature under pressure. Explanation: The rice can be cooked faster in a pressure cooker since the boiling point of water increases with pressure. In general, the higher the ... of the water in a pressure cooker is higher than temperature of the water in an open pot.

Water always boils when its (A) Temperature reaches 100° C (B) Vapour pressure equals 76 cm of Hg (C) Saturated vapour pressure equals the external pressure on its surface (D) Saturated vapour pressure is less than the atmospheric pressure

Description : Water always boils when its (A) Temperature reaches 100° C (B) Vapour pressure equals 76 cm of Hg (C) Saturated vapour pressure equals the external pressure on its surface (D) Saturated vapour pressure is less than the atmospheric pressure

Last Answer : (C) Saturated vapour pressure equals the external pressure on its surface

The temperature at which water boils depends mainly on ------? A. Air temperature B. Relative humidity C. Air pressure (Answer) D. Air density E. The specific heat of air

Description : The temperature at which water boils depends mainly on ------? A. Air temperature B. Relative humidity C. Air pressure (Answer) D. Air density E. The specific heat of air

Last Answer : C. Air pressure (Answer)

If a large number of people are enclosed in a room, then (a) Oxygen decreases and carbon dioxide increases (b) Oxygen increases and carbon dioxide decrease (c) Both oxygen and carbon dioxide decrease (d) Both oxygen and carbon dioxide increase

Description : If a large number of people are enclosed in a room, then (a) Oxygen decreases and carbon dioxide increases (b) Oxygen increases and carbon dioxide decrease (c) Both oxygen and carbon dioxide decrease (d) Both oxygen and carbon dioxide increase

Last Answer : Ans:(a)

The partial pressure of oxygen in the alveoli of the lungs is (a) equal to that in the blood (b) more than that in the blood (c) less than that in the blood (d) less than that of carbon dioxide.

Description : The partial pressure of oxygen in the alveoli of the lungs is (a) equal to that in the blood (b) more than that in the blood (c) less than that in the blood (d) less than that of carbon dioxide.

Last Answer : (b) more than that in the blood

If there is no carbon dioxide in the earth's atmosphere, the temperature of earth's surface would be – (1) dependent on the amount of oxygen in the atmosphere (2) higher than the present (3) less than the present (4) the same

Description : If there is no carbon dioxide in the earth's atmosphere, the temperature of earth's surface would be – (1) dependent on the amount of oxygen in the atmosphere (2) higher than the present (3) less than the present (4) the same

Last Answer : (3) less than the present Explanation: If there is no carbon dioxide in the earth's atmosphere, the temperature of earth's surface would be less than the present because carbon emission in the atmosphere is one of the major causes of global warming.

If there is no carbon dioxide in the earth’s atmosphere, the temperature of earth’s surface would be (1) dependent on the amount of oxygen in the atmosphere (2) higher than the present (3) less than the present (4) the same

Description : If there is no carbon dioxide in the earth’s atmosphere, the temperature of earth’s surface would be (1) dependent on the amount of oxygen in the atmosphere (2) higher than the present (3) less than the present (4) the same 

Last Answer : less than the present

Who "People breathe in oxygen molecules from the air and exhale carbon dioxide molecules. Because of this, the air is full of carbon dioxide and oxygen mixed together. What is this an example of"?

Description : Who "People breathe in oxygen molecules from the air and exhale carbon dioxide molecules. Because of this, the air is full of carbon dioxide and oxygen mixed together. What is this an example of"?

Last Answer : Increase in entropy

A hydrogen balloon floats because of – (1) Air pressure decreases with decrease in height (2) Air pressure decreases with decrease in weight (3) Weight of the balloon is less than the weight of air displaced by it (4) The pressure inside the balloon is more than the pressure outside it

Description : A hydrogen balloon floats because of – (1) Air pressure decreases with decrease in height (2) Air pressure decreases with decrease in weight (3) Weight of the balloon is less than the weight of air displaced by it (4) The pressure inside the balloon is more than the pressure outside it

Last Answer : (3) Weight of the balloon is less than the weight of air displaced by it Explanation: A hydrogen atom is very light. Most of the air on earth is made up of nitrogen, oxygen, and carbon dioxide. ... grams per liter. Nitrogen, which makes up 80% of the air we breathe, weighs 1.2506 grams per liter.

A hydrogen balloon floats up because of (1) air pressure decreases with decrease in height (2) air pressure decreases with decrease in weight (3) weight of the balloon is less than the weight of air displaced by it. (4) the pressure inside the balloon is more than the pressure outside it

Description : A hydrogen balloon floats up because of (1) air pressure decreases with decrease in height (2) air pressure decreases with decrease in weight (3) weight of the balloon is less than the weight of air displaced by it. (4) the pressure inside the balloon is more than the pressure outside it

Last Answer : weight of the balloon is less than the weight of air displaced by it.

Increasing carbon dioxide will cause sea ice to reduce in spatial coverage. In turn, the reduced sea ice extent is a (a) Positive feedback on surface temperature because it has a greater albedo than ocean (b) Positive feedback on surface temperature because it has a lower albedo than ocean (c) Positive feedback on surface temperature because sea ice has lower heat ca- pacity than ocean (d) Both B and C are true

Description : Increasing carbon dioxide will cause sea ice to reduce in spatial coverage. In turn, the reduced sea ice extent is a (a) Positive feedback on surface temperature because it has a greater albedo than ocean ( ... because sea ice has lower heat ca- pacity than ocean (d) Both B and C are true

Last Answer :  Positive feedback on surface temperature because it has a greater albedo than ocean

Absolute Zero is defined as – (1) The temperature at which all molecular motion ceases (2) At which water boils at 298K (3) At which liquid Helium boils (4) At which the volume becomes zero

Description : Absolute Zero is defined as – (1) The temperature at which all molecular motion ceases (2) At which water boils at 298K (3) At which liquid Helium boils (4) At which the volume becomes zero

Last Answer : (1) The temperature at which all molecular motion ceases Explanation: Absolute zero is the temperature at which all motion in matter stops and is thought to be unreachable. It is ... nature have minimal vibrational motion, retaining only quantum mechanical, zero-point energy-induced particle motion.

Absolute Zero is defined as (1) The temperature at which all molecular motion ceases (2) At which water boils at 298K (3) At which liquid Helium boils (4) At which the volume becomes zero

Description : Absolute Zero is defined as (1) The temperature at which all molecular motion ceases (2) At which water boils at 298K (3) At which liquid Helium boils (4) At which the volume becomes zero

Last Answer : The temperature at which all molecular motion ceases

The highest volume of gases in lower atmosphere is comprised of - (1) Hydrogen (2) Carbon dioxide (3) Oxygen (4) Nitrogen

Description : The highest volume of gases in lower atmosphere is comprised of - (1) Hydrogen (2) Carbon dioxide (3) Oxygen (4) Nitrogen

Last Answer : (4) Nitrogen Explanation: There are a number of atmospheric gases which make up air. In the lower atmosphere or troposphere, the main gases are nitrogen and oxygen, which make up 78% and 21% of the volume of air respectively. The remaining 1% of the atmospheric gases is made up of trace gases.

The highest volume of gases in lower atmosphere is comprised of (1) Hydrogen (2) Carbon dioxide (3) Oxygen (4) Nitrogen

Description : The highest volume of gases in lower atmosphere is comprised of (1) Hydrogen (2) Carbon dioxide (3) Oxygen (4) Nitrogen

Last Answer : Nitrogen

What happens to a liquid, when the vapour pressure equals the atmospheric pressure? (1) The liquid cools (2) The liquid boils (3) No change (4) The liquid evaporates

Description : What happens to a liquid, when the vapour pressure equals the atmospheric pressure? (1) The liquid cools (2) The liquid boils (3) No change (4) The liquid evaporates

Last Answer : (2) The liquid boils Explanation: Ordinary evaporation is a surface phenomenon -since the vapor pressure is low and since the pressure inside the liquid is equal to atmospheric pressure plus ... pressure is equal to atmospheric pressure, bubbles form, and the vaporization becomes a volume phenomena.

What happens to a liquid, when the vapour pressure equals the atmospheric pressure? (1) The liquid cools (2) The liquid boils (3) No change (4) The liquid evaporates

Description : What happens to a liquid, when the vapour pressure equals the atmospheric pressure? (1) The liquid cools (2) The liquid boils (3) No change (4) The liquid evaporates

Last Answer : The liquid boils

Water is a highly effective coolant for a car engine because _____ A. Water is good conductor of heat B. Water has very high specific heat capacity C. Water boils at a comparatively high temperature D. Evaporation of water produces lot of cooling

Description : Water is a highly effective coolant for a car engine because _____ A. Water is good conductor of heat B. Water has very high specific heat capacity C. Water boils at a comparatively high temperature D. Evaporation of water produces lot of cooling

Last Answer : ANSWER: A

Water boils at low temperature on mountains because

Description : Water boils at low temperature on mountains because

Last Answer : Atmospheric pressure is less at mountains.

Water boils at low temperature on mountains because–

Description : Water boils at low temperature on mountains because–

Last Answer : Atmospheric pressure is less at mountains.

Water is a highly effective coolant for a car engine because -----? A. Water is good conductor of heat B. Water has very high specific heat capacity (Answer) C. Water boils at a comparatively high temperature D. Evaporation of water produces lot of cooling

Description : Water is a highly effective coolant for a car engine because -----? A. Water is good conductor of heat B. Water has very high specific heat capacity (Answer) C. Water boils at a comparatively high temperature D. Evaporation of water produces lot of cooling

Last Answer : B. Water has very high specific heat capacity (Answer)

Water boils when:  A. Its saturated vapor pressure equals to the atmospheric pressure  B. Its vapor pressure equals 76cm of mercury  C. Its temperature reaches 212 degree Celsius  D. Its vapor pressure is 1 gram per sq. cm

Description : Water boils when:  A. Its saturated vapor pressure equals to the atmospheric pressure  B. Its vapor pressure equals 76cm of mercury  C. Its temperature reaches 212 degree Celsius  D. Its vapor pressure is 1 gram per sq. cm

Last Answer : Its saturated vapor pressure equals to the atmospheric pressure

Which of the following complications of TPN are appropriately managed with the listed treatment? a. Air embolism—place patient in reverse Trendelenburg and the left lateral decubitus position and aspirate venous air b. Hyperchloremic metabolic acidosis—give sodium and potassium as acetate salts c. Carbon dioxide retention—decrease glucose calories and replace with fat d. Line sepsis—intravenous antibiotics

Description : Which of the following complications of TPN are appropriately managed with the listed treatment? a. Air embolism-place patient in reverse Trendelenburg and the left lateral decubitus position ... dioxide retention-decrease glucose calories and replace with fat d. Line sepsis-intravenous antibiotics

Last Answer : Answer: b, c A number of complications of TPN can occur which can be divided into three types: mechanical, metabolic, and infectious

Why is ethanol boiling at a higher boiling point than methyl ether boils at a lower boiling point despite the fact that they have the same molecular weight?

Description : Why is ethanol boiling at a higher boiling point than methyl ether boils at a lower boiling point despite the fact that they have the same molecular weight?

Last Answer : Need answer

On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because – (1) metals have higher thermal capacity than plastics (2) plastics have a lower density than metals (3) metals are good conductors of heat (4) plastics have a higher thermal conductivity than metals

Description : On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because - (1) metals ... metals (3) metals are good conductors of heat (4) plastics have a higher thermal conductivity than metals

Last Answer : (3) metals are good conductors of heat Explanation: On a chilly day, the room temperature is lower than our body temperature. Since metals have a higher coefficient of thermal conductivity than plastic, they ... from our fingers will flow to the metal cap much more quickly than to the plastic body.

On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because : (1) metals have higher thermal capacity than plastics (2) plastics have a lower density than metals (3) metals are good conductors of heat (4) plastics have a higher thermal conductivity than metals

Description : On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because : (1) metals ... metals (3) metals are good conductors of heat (4) plastics have a higher thermal conductivity than metals

Last Answer : metals are good conductors of heat

Boiling point of water gets lowered at high altitudes (e.g., hills), because (A) Temperature is low (B) Atmospheric pressure is low (C) Atmospheric pressure is high (D) None of these

Description : Boiling point of water gets lowered at high altitudes (e.g., hills), because (A) Temperature is low (B) Atmospheric pressure is low (C) Atmospheric pressure is high (D) None of these

Last Answer : Option B

On placing an inverted tumbler over a burning candle, the flame extinguishes after some – time . This is because of non –availability of a) oxygen b)water vapour c)carbon dioxide d)wax

Description : On placing an inverted tumbler over a burning candle, the flame extinguishes after some – time . This is because of non –availability of a) oxygen b)water vapour c)carbon dioxide d)wax

Last Answer : a) oxygen

Fruit stored in a cold chamber exhibit longer storage life because – a. exposure to sunlight is prevented b. the concentration of carbon dioxide in the environment is increased c. the rate of respiration is decreased d. there is increase in humidity

Description : Fruit stored in a cold chamber exhibit longer storage life because – a. exposure to sunlight is prevented b. the concentration of carbon dioxide in the environment is increased c. the rate of respiration is decreased d. there is increase in humidity

Last Answer : c. the rate of respiration is decreased

Fruit stored in a cold chamber exhibit longer storage life because – a. exposure to sunlight is prevented b. the concentration of carbon dioxide in the environment is increased c. the rate of respiration is decreased d. there is increase in humidity

Description : Fruit stored in a cold chamber exhibit longer storage life because – a. exposure to sunlight is prevented b. the concentration of carbon dioxide in the environment is increased c. the rate of respiration is decreased d. there is increase in humidity

Last Answer : c. the rate of respiration is decreased

Green plants in the sea are useful for the respiration of fish because (a) They give out oxygen (b) They give out carbon dioxide (c) The give out oxygen and carbon dioxide simultaneously (d) They take oxygen and give out carbon dioxide

Description : Green plants in the sea are useful for the respiration of fish because (a) They give out oxygen (b) They give out carbon dioxide (c) The give out oxygen and carbon dioxide simultaneously (d) They take oxygen and give out carbon dioxide

Last Answer : Ans:(a)

It is not advisable to sleep under a tree at night because of the (a) Release of oxygen in lesser amount (b) Release of oxygen in larger amount (c) Release of carbon monoxide (d) Release of carbon dioxide

Description : It is not advisable to sleep under a tree at night because of the (a) Release of oxygen in lesser amount (b) Release of oxygen in larger amount (c) Release of carbon monoxide (d) Release of carbon dioxide

Last Answer : Ans:(d)

The open "Sigrees” or coal stoves often require fanning to sustain burning because of (1) tendency of carbon dioxide to form a layer along with dust smoke (2) lack of oxygen in the surroundings of sigrees (3) accumulation of smoke and dust over the sigrees (4) interrupted release of moisture from the material

Description : The open "Sigrees or coal stoves often require fanning to sustain burning because of (1) tendency of carbon dioxide to form a layer along with dust smoke (2) lack of oxygen in the ... 3) accumulation of smoke and dust over the sigrees (4) interrupted release of moisture from the material

Last Answer : (1) tendency of carbon dioxide to form a layer along with dust smoke Explanation: Burning coal requires oxygen to chemically react. The availability of oxygen is limited in the furnace by several factors ... dioxide from forming layer along with dust smoke so as to keep the supply of oxygen intact.

When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is - (1) Hydrogen (2) Oxygen (3) Carbon dioxide (4) All of them

Description : When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is - (1) Hydrogen (2) Oxygen (3) Carbon dioxide (4) All of them

Last Answer : (3) Carbon dioxide Explanation: When baking soda and lemon juice are added together, the reaction of the two is an acid-based reaction because it involves an acid (citric acid in the lemon juice) ... , more commonly known as baking soda). Carbon dioxide, a gas, is produced by the reaction.

Yeast is used in making bread because it produces------? A. Carbon dioxide (Answer) B. Sugar C. Bacteria D. Oxygen E. None of these

Description : Yeast is used in making bread because it produces------? A. Carbon dioxide (Answer) B. Sugar C. Bacteria D. Oxygen E. None of these

Last Answer : A. Carbon dioxide (Answer)

The open "Sigrees" or coal stoves often require fanning to sustain burning because of (1) tendency of carbon dioxide to form a layer along with dust smoke (2) lack of oxygen in the surroundings of sigrees (3) accumulation of smoke and dust over the sigrees (4) interrupted release of moisture from the material

Description : The open "Sigrees" or coal stoves often require fanning to sustain burning because of (1) tendency of carbon dioxide to form a layer along with dust smoke (2) lack of oxygen in the ... 3) accumulation of smoke and dust over the sigrees (4) interrupted release of moisture from the material

Last Answer : tendency of carbon dioxide to form a layer along with dust smoke

When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is (1) Hydrogen (2) Oxygen (3) Carbon dioxide (4) All of them

Description : When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is (1) Hydrogen (2) Oxygen (3) Carbon dioxide (4) All of them 

Last Answer : Carbon dioxide

A coal gasifier operating at 20 atm. (e.g. Lurgi gasifier) as compared to one operating at atmospheric pressure (e.g. Kopper-Totzek or Winkler gasifier) will produce a gas having (A) Higher methane content and thus higher calorific value (B) Higher carbon monoxide content(C) Lower carbon dioxide content(D) None of these

Description : A coal gasifier operating at 20 atm. (e.g. Lurgi gasifier) as compared to one operating at atmospheric pressure (e.g. Kopper-Totzek or Winkler gasifier) will produce a gas having (A) Higher ... calorific value (B) Higher carbon monoxide content (C) Lower carbon dioxide content (D) None of these

Last Answer : (A) Higher methane content and thus higher calorific value

The gas inside an electric bulb is (a) air (b) oxygen (c) nitrogen (d) carbon dioxide

Description : The gas inside an electric bulb is (a) air (b) oxygen (c) nitrogen (d) carbon dioxide

Last Answer : Ans:(c)

Of all the gases present in the air, which one of the following is the highest in percentage? (a) Carbon dioxide (b) Hydrogen (c) Nitrogen (d) Oxygen

Description : Of all the gases present in the air, which one of the following is the highest in percentage? (a) Carbon dioxide (b) Hydrogen (c) Nitrogen (d) Oxygen

Last Answer : Ans:(c)

Silver gets corroded due to ______ in air. (1) Oxygen (2) Hydrogen Sulphide (3) Carbon dioxide (4) Nitrogen

Description : Silver gets corroded due to ______ in air. (1) Oxygen (2) Hydrogen Sulphide (3) Carbon dioxide (4) Nitrogen

Last Answer : (2) Hydrogen Sulphide Explanation: Silver is a fairly stable metal and under normal circumstances does not corrode quickly. However, it is particularly susceptible to the effects of the sulfide ... atmosphere, especially in marine environment, and readily forms a surface tarnish of silver sulphide.

An example of major air pollutant is – (1) Oxygen (2) Carbon monoxide (3) Helium (4) Carbon dioxide

Description : An example of major air pollutant is – (1) Oxygen (2) Carbon monoxide (3) Helium (4) Carbon dioxide

Last Answer : (2) Carbon monoxide Explanation: Carbon monoxide (CO) is a colourless, odorless, non-irritating but very poisonous gas which is a product by incomplete combustion of fuel such as natural gas, coal or wood. Vehicular exhaust is a major source of carbon monoxide.

The major constituent of air is – (1) nitrogen (2) carbon dioxide (3) oxygen (4) hydrogen

Description : The major constituent of air is – (1) nitrogen (2) carbon dioxide (3) oxygen (4) hydrogen

Last Answer : (1) nitrogen Explanation: Depending on various geographical locationsthese may change, but for the most part air is made up of 78% nitrogen (N2), 21% oxygen (O2), and trace amounts of ... and mostly inert diatomic gas at standard conditions, constituting 78.09% by volume of Earth's atmosphere.

The main reducing agent in iron blast furnace is(A) Carbon dioxide(B) Carbon monoxide(C) Oxygen(D) Air

Description : The main reducing agent in iron blast furnace is(A) Carbon dioxide (B) Carbon monoxide (C) Oxygen (D) Air

Last Answer : Option B

Highest percentage of air consists of A. Oxygen B. Carbon dioxide C. Nitrogen D. Argon

Description : Highest percentage of air consists of A. Oxygen B. Carbon dioxide C. Nitrogen D. Argon

Last Answer : C. Nitrogen