Biology; Chemistry; Physics: Post your doubts here!

[Dark Destination]

Drink A. I'm very much sure.
C ki tu koi tuk hi nahi thi.

But why should Drink A be avoided?
Isn't it providing sufficient water to counter the hot weather?

Would you rather drink C, with low water content, and die of dehydration and excessive sweating? o.o

 

[Mazin Junaid]

This is the justification for CONSUMATION. They said which one to avoid.

I'm just stating both the perspectives

 

[ciesgetoveralready]

^ LOL Dark Destination Exactly what I was saying It's going to be a never ending debate.
Guys chill! Cambridge will do the marking. Lets hope for the best. What's done is done. We dont know whose correct or whose wrong.

 

[Mazin Junaid]

But why should Drink A be avoided?
Isn't it providing sufficient water to counter the hot weather?

Would you rather drink C, with low water content, and die of dehydration and excessive sweating? o.o

Cause drink A causes more urine to be produced compared to the other 2. Aise socho that you take in 1.5 dm³ in drink C but lose only 1 dm in urine jab ke with drink A you're losing almost all the water you took in

 

[Dark Destination]

Cause drink A causes more urine to be produced compared to the other 2. Aise socho that you take in 1.5 dm³ in drink C but lose only 1 dm in urine jab ke with drink A you're losing almost all the water you took in

That amount you're not losing are the other stuff in that drink. The nutrients.
ALL THE DRINKS WERE 1.5 dm^3.
But the one that produces the least urine, has the lowest water content. It has all other other contents; Proteins, minerals and all that.

And who said we are supposed to retain all the water in our body?
On a hot day, the person will keep sweating, and Drink A will keep providing the water, and he'll keep urinating. The body will be hydrated.

But go consume Drink C, and stand in a desert. You'll faint or something.

 

[asadalam]

That amount you're not losing are the other stuff in that drink. The nutrients.
ALL THE DRINKS WERE 1.5 dm^3.
But the one that produces the least urine, has the lowest water content. It has all other other contents; Proteins, minerals and all that.

And who said we are supposed to retain all the water in our body?
On a hot day, the person will keep sweating, and Drink A will keep providing the water, and he'll keep urinating. The body will be hydrated.

But go consume Drink C, and stand in a desert. You'll faint or something.

What if A had a drug that increased ADH supply and caused more water to be taken in thereby causing dehydration.I'm just saying there are a lot of possibilities and in situations like these we should stop arguing and let CIE do their job

 

[Abdul Hanan]

What if A had a drug that increased ADH supply and caused more water to be taken in thereby causing dehydration.I'm just saying there are a lot of possibilities and in situations like these we should stop arguing and let CIE do their job

you did C or A?

 

[asadalam]

you did C or A?

A

 

[ciesgetoveralready]

I can't wait for the marking scheme now. I hope I remember by answer by the time

 

[Fate0]

Cause drink A causes more urine to be produced compared to the other 2. Aise socho that you take in 1.5 dm³ in drink C but lose only 1 dm in urine jab ke with drink A you're losing almost all the water you took in

Exactly. In A you lose almost all the water you take in.

 

[Abdul Hanan]

A

i did C as in C only the water lost was least in urine.....
it asked which one to be "AVOIDED"
C should be avoided as it has least water content.....and will lead to less heat loss in urine making the body stay warm....
A and D will lead to more water losses from body in urine and will cool the body down more as compared to C... so they are recommended
C. just has less water content and to remain hydrated.., it should be avoided....
there are other possibilities so lets just hope for the best

 

[Fate0]

i did C as in C only the water lost was least in urine.....
it asked which one to be "AVOIDED"
C should be avoided as it has least water content.....and will lead to less heat loss in urine making the body stay warm....
A and D will lead to more water losses from body in urine and will cool the body down more as compared to C... so they are recommended
C. just has less water content and to remain hydrated.., it should be avoided....
there are other possibilities so lets just hope for the best

There is no relation to water content.
You're taking the same , 1.5 dm^3 of the liquids.
If you saw the graph, which i dont think you did, C retains the most water, like you take in 1.5 and only around 0.8 was urinated out while for A almost all of it was urinated out.

 

[Abdul Hanan]

There is no relation to water content.
You're taking the same , 1.5 dm^3 of the liquids.
If you saw the graph, which i dont think you did, C retains the most water, like you take in 1.5 and only around 0.8 was urinated out while for A almost all of it was urinated out.

so you do agree that drink A allowed most water loss right?
so that urine from drink A will be having the largest volume..(and water content)
so drink A is best as it allows most heat to be lost via urine making body cool.(remember that urine is of body temp)
why should it be avoided then?

 

[Fate0]

so you do agree that drink A allowed most water loss right?
so that urine from drink A will be having the largest volume..(and water content)
so drink A is best as it allows most heat to be lost via urine making body cool.(remember that urine is of body temp)
why should it be avoided then?

You just changed your point but heat loss through urine and faeces is VERY minimal. Not enough to cool a body lol

 

[Dark Destination]

Let me clear this up once and for all!

No questions have TWO ANSWERS. There is only one answer, and the other two are WRONG.

The question was about consuming three drinks. Three people consumed three different drinks, in equal quantities (1.5 dm^3) and then their urine volume in the next 2.5 hours was recorded.
And it was seen that the person who took DRINK A, had the highest volume of Urine.
Drink C consumer had the least volume of urine.

Now you have to relate this to WATER CONTENT of those drinks.

If you consumer a watery food, you'll urinate more, than when you consume a dry food.
The same is the case here.

Drink A provides so much water, that the urine was the greatest.
Drink C consumer had less urine, that means DRINK C supplied LESS WATER CONTENT to the body, even though both drinks were 1.5 dm^3.

Now, if something is 1.5 dm^3, that doesn't mean it is all water.
It contains other stuff. Maybe undissolved solids, some other fluids, nutrients that take up a space out of that 1.5 dm^3 volume.
So if 1.3 out of 1.5 of Drink A is being excreted in urine, that just proves that it was supplying the most water.
Drink C, only half of it was lost in urine, that means it was full of other crap, such as undissolved solids, nutrients, fiber or whatever. And wasn't providing much water.

So, after taking 1.5 dm^3 of each drink, and seeing that DRINK C gave the least volume of urine, we can conclude that it has the LEAST WATER CONTENT, and it has other stuff that take up space out of that 1.5 dm^3.

The DRINKS can be anything. Tea, Coffee, Juices, Water. They're just drinks.
Now obviously, distilled water has more water content than Coffee. The same is the case here.
Would you drink Coffee or Water on a hot day if you want to prevent dehydration?
Of course WATER.
YES, MORE VOLUME OF URINE WILL BE RELEASED WITH WATER. OF COURSE IT WILL BE. (Like with DRINK A)**
After drinking Coffee, there will be less urine. (As is the case with Drink C)
Same is the case with Drink A and C.
Drink A produces more Urine, so it is better for a hot day.

The question said, it's a VERY HOT DAY. And which of those three drinks should be avoided?
Now we absolutely have to CHOOSE one of those three drinks, and ONE OF THOSE IS WRONG, and it SHOULD BE AVOIDED ON A HOT DAY.

Now, WATER is an essential component of ours lives. We need water. We can't live without it. 70% of our body is water.
Go to a desert, and don't consume water for some days, you'll die. So it's essential, and the required amount if needed, even on a normal day. AT LEAST 8-10 glasses of water are needed on a normal day. That's the water requirement.

So on a VERY HOT DAY, it would be sensible to take a DRINK that offers more WATER CONTENT.
On a hot day, there would be a lot of sweating. Water would continuously be secreted from your sweat pores, and evaporated out into the air.
You'd lose water constantly. Leading to Dehydration if you don't consume enough water.

Now in such a difficult situation, your body needs A GOOD SUPPLY OF WATER. That can be provided with DRINK A, that has HIGH WATER CONTENT. (As it produced more volume of urine)
All that water that would be lost while sweating, that will be replaced with the water supplied by DRINK A.

Who said water should be retained in the body? Water is just a medium, its in the blood.
And the kidneys never over-excrete water. They are osmo-regulators, and the Hypothalamus just checks the water levels in the blood, and ADH hormone controls the water level by increasing and decreasing water loss in urine.
So if DRINK A is making a lot of urine, that means it is providing a lot of water. (So much, that some has to be lost in the urine to compensate)
And on that hot day, less urine will be produced, as some would be lost in sweat too.
Drink C, is making less urine, that means it is providing less water. It's not sufficient!

Hence, it can be concluded that on a HOT DAY, it would be better to maximize FLUID INTAKE (As Doctors say, As Biologists say, as the entire world says), and take something that offers a lot of water. And AVOID something that provides less water, which will combined with EXCESS SWEATING, and will not provide enough water that is required. And the person will be thirsty all day, and won't be able to function properly. So Drink C should be avoided

 

[Fate0]

Let me clear this up once and for all!

No questions have TWO ANSWERS. There is only one answer, and the other two are WRONG.

The question was about consuming three drinks. Three people consumed three different drinks, in equal quantities (1.5 dm^3) and then their urine volume in the next 2.5 hours was recorded.
And it was seen that the person who took DRINK A, had the highest volume of Urine.
Drink C consumer had the least volume of urine.

Now you have to relate this to WATER CONTENT of those drinks.

If you consumer a watery food, you'll urinate more, than when you consume a dry food.
The same is the case here.

Drink A provides so much water, that the urine was the greatest.
Drink C consumer had less urine, that means DRINK C supplied LESS WATER CONTENT to the body, even though both drinks were 1.5 dm^3.

Now, if something is 1.5 dm^3, that doesn't mean it is all water.
It contains other stuff. Maybe undissolved solids, some other fluids, nutrients that take up a space out of that 1.5 dm^3 volume.
So if 1.3 out of 1.5 of Drink A is being excreted in urine, that just proves that it was supplying the most water.
Drink C, only half of it was lost in urine, that means it was full of other crap, such as undissolved solids, nutrients, fiber or whatever. And wasn't providing much water.

So, after taking 1.5 dm^3 of each drink, and seeing that DRINK C gave the least volume of urine, we can conclude that it has the LEAST WATER CONTENT, and it has other stuff that take up space out of that 1.5 dm^3.

The DRINKS can be anything. Tea, Coffee, Juices, Water. They're just drinks.
Now obviously, distilled water has more water content than Coffee. The same is the case here.
Would you drink Coffee or Water on a hot day if you want to prevent dehydration?
Of course WATER.
YES, MORE VOLUME OF URINE WILL BE RELEASED WITH WATER. OF COURSE IT WILL BE. (Like with DRINK A)**
After drinking Coffee, there will be less urine. (As is the case with Drink C)
Same is the case with Drink A and C.
Drink A produces more Urine, so it is better for a hot day.

The question said, it's a VERY HOT DAY. And which of those three drinks should be avoided?
Now we absolutely have to CHOOSE one of those three drinks, and ONE OF THOSE IS WRONG, and it SHOULD BE AVOIDED ON A HOT DAY.

Now, WATER is an essential component of ours lives. We need water. We can't live without it. 70% of our body is water.
Go to a desert, and don't consume water for some days, you'll die. So it's essential, and the required amount if needed, even on a normal day. AT LEAST 8-10 glasses of water are needed on a normal day. That's the water requirement.

So on a VERY HOT DAY, it would be sensible to take a DRINK that offers more WATER CONTENT.
On a hot day, there would be a lot of sweating. Water would continuously be secreted from your sweat pores, and evaporated out into the air.
You'd lose water constantly. Leading to Dehydration if you don't consume enough water.

Now in such a difficult situation, your body needs A GOOD SUPPLY OF WATER. That can be provided with DRINK A, that has HIGH WATER CONTENT. (As it produced more volume of urine)
All that water that would be lost while sweating, that will be replaced with the water supplied by DRINK A.

Who said water should be retained in the body? Water is just a medium, its in the blood.
And the kidneys never over-excrete water. They are osmo-regulators, and the Hypothalamus just checks the water levels in the blood, and ADH hormone controls the water level by increasing and decreasing water loss in urine.
So if DRINK A is making a lot of urine, that means it is providing a lot of water. (So much, that some has to be lost in the urine to compensate)
And on that hot day, less urine will be produced, as some would be lost in sweat too.
Drink C, is making less urine, that means it is providing less water. It's not sufficient!

Hence, it can be concluded that on a HOT DAY, it would be better to maximize FLUID INTAKE (As Doctors say, As Biologists say, as the entire world says), and take something that offers a lot of water. And AVOID something that provides less water, which will combined with EXCESS SWEATING, and will not provide enough water that is required. And the person will be thirsty all day, and won't be able to function properly. So Drink C should be avoided

Please dont take graphs into consideration. They were there for nothing

 

[Abdul Hanan]

You just changed your point but heat loss through urine and faeces is VERY minimal. Not enough to cool a body lol

but the most heat lost in urine was from A. so it is best. not worst.

 

[Dark Destination]

Please dont take graphs into consideration. They were there for nothing

You're saying that Out of 1.5 dm^3, most of Drink A was lost in Urine. So it's not providing any sufficient water.
That Volume that is lost in the urine, actually, is the WATER.

Drink C had so less water (it was full of other stuff - that wasn't water), that a small amount of urine was produced. That isn't sufficient for a hot day.

 

[Fate0]

You're saying that Out of 1.5 dm^3, most of Drink A was lost in Urine. So it's not providing any sufficient water.
That Volume that is lost in the urine, actually, is the WATER.

Drink C had so less water (it was full of other stuff - that wasn't water), that a small amount of urine was produced. That isn't sufficient for a hot day.

The total volume for each Drink was 1.5 dm^3.
You take 1.5 dm^3 of A. You lose 90% of it.
You take 1.5 dm^3 of B. You lose 80% of it.
You take 1.5 dm^3 of C. You lose 65-70% of it.
Clearly Drink C loses less water so why would you avoid it. I dont care about what the doctors say. When the graph supports that A actually loses most of itself in urine, it's not doing the body any good. So it's avoided.

 

[Hazel-logy]

Let me clear this up once and for all!

No questions have TWO ANSWERS. There is only one answer, and the other two are WRONG.

The question was about consuming three drinks. Three people consumed three different drinks, in equal quantities (1.5 dm^3) and then their urine volume in the next 2.5 hours was recorded.
And it was seen that the person who took DRINK A, had the highest volume of Urine.
Drink C consumer had the least volume of urine.

Now you have to relate this to WATER CONTENT of those drinks.

If you consumer a watery food, you'll urinate more, than when you consume a dry food.
The same is the case here.

Drink A provides so much water, that the urine was the greatest.
Drink C consumer had less urine, that means DRINK C supplied LESS WATER CONTENT to the body, even though both drinks were 1.5 dm^3.

Now, if something is 1.5 dm^3, that doesn't mean it is all water.
It contains other stuff. Maybe undissolved solids, some other fluids, nutrients that take up a space out of that 1.5 dm^3 volume.
So if 1.3 out of 1.5 of Drink A is being excreted in urine, that just proves that it was supplying the most water.
Drink C, only half of it was lost in urine, that means it was full of other crap, such as undissolved solids, nutrients, fiber or whatever. And wasn't providing much water.

So, after taking 1.5 dm^3 of each drink, and seeing that DRINK C gave the least volume of urine, we can conclude that it has the LEAST WATER CONTENT, and it has other stuff that take up space out of that 1.5 dm^3.

The DRINKS can be anything. Tea, Coffee, Juices, Water. They're just drinks.
Now obviously, distilled water has more water content than Coffee. The same is the case here.
Would you drink Coffee or Water on a hot day if you want to prevent dehydration?
Of course WATER.
YES, MORE VOLUME OF URINE WILL BE RELEASED WITH WATER. OF COURSE IT WILL BE. (Like with DRINK A)**
After drinking Coffee, there will be less urine. (As is the case with Drink C)
Same is the case with Drink A and C.
Drink A produces more Urine, so it is better for a hot day.

The question said, it's a VERY HOT DAY. And which of those three drinks should be avoided?
Now we absolutely have to CHOOSE one of those three drinks, and ONE OF THOSE IS WRONG, and it SHOULD BE AVOIDED ON A HOT DAY.

Now, WATER is an essential component of ours lives. We need water. We can't live without it. 70% of our body is water.
Go to a desert, and don't consume water for some days, you'll die. So it's essential, and the required amount if needed, even on a normal day. AT LEAST 8-10 glasses of water are needed on a normal day. That's the water requirement.

So on a VERY HOT DAY, it would be sensible to take a DRINK that offers more WATER CONTENT.
On a hot day, there would be a lot of sweating. Water would continuously be secreted from your sweat pores, and evaporated out into the air.
You'd lose water constantly. Leading to Dehydration if you don't consume enough water.

Now in such a difficult situation, your body needs A GOOD SUPPLY OF WATER. That can be provided with DRINK A, that has HIGH WATER CONTENT. (As it produced more volume of urine)
All that water that would be lost while sweating, that will be replaced with the water supplied by DRINK A.

Who said water should be retained in the body? Water is just a medium, its in the blood.
And the kidneys never over-excrete water. They are osmo-regulators, and the Hypothalamus just checks the water levels in the blood, and ADH hormone controls the water level by increasing and decreasing water loss in urine.
So if DRINK A is making a lot of urine, that means it is providing a lot of water. (So much, that some has to be lost in the urine to compensate)
And on that hot day, less urine will be produced, as some would be lost in sweat too.
Drink C, is making less urine, that means it is providing less water. It's not sufficient!

Hence, it can be concluded that on a HOT DAY, it would be better to maximize FLUID INTAKE (As Doctors say, As Biologists say, as the entire world says), and take something that offers a lot of water. And AVOID something that provides less water, which will combined with EXCESS SWEATING, and will not provide enough water that is required. And the person will be thirsty all day, and won't be able to function properly. So Drink C should be avoided

ABSOLUTELY!!!!! this is the best explanation for this! And yeah its obviously C