Biology; Chemistry; Physics: Post your doubts here!

[muhammadali233]

Chikna paper howa aj ka,nailed it,except for the A1

 

[Awesome12]

Chikna paper howa aj ka,nailed it,except for the A1

In the MCQs there was a question;
What does not produce a white ppt with hcl?

I chose the one in which the reagents were
Sodium nitrate and HCl
What did you chose?

 

[Dark Destination]

What was the hydrolysis product of carbohydrates? I wrote ''Sugars''..

 

[Awesome12]

What was the hydrolysis product of carbohydrates? I wrote ''Sugars''..

They asked for the name of the class of compounds

 

[Dark Destination]

They asked for the name of the class of compounds

What was the answer?

 

[DaniyalK]

In the MCQs there was a question;
What does not produce a white ppt with hcl?

I chose the one in which the reagents were
Sodium nitrate and HCl
What did you chose?

That's the correct option. I know because it was from a past paper.

 

[Awesome12]

What was the answer?

I wrote organic compounds

 

[Awesome12]

That's the correct option. I know because it was from a past paper.

Thank GOD!!

 

[Fate0]

I wrote organic compounds

Uh no, that is so not right.
The answer was sugar/glucose prob .

 

[Dark Destination]

Uh no, that is so not right.
The answer was sugar/glucose prob .

Are you sure its SUGAR?
Because aren't all carbohydrates sugars?

They're are classes. Complex sugars: Starch, Cellulose.
Simple sugars: Glucose, Fructose.

 

[Awesome12]

Uh no, that is so not right.
The answer was sugar/glucose prob .

It is not a class of compounds

 

[Dark Destination]

I wrote organic compounds

Wrong.

 

[Dark Destination]

How many electrons don't take part in bonding? That mcq..

 

[Fate0]

Are you sure its SUGAR?
Because aren't all carbohydrates sugars?

They're are classes. Complex sugars: Starch, Cellulose.
Simple sugars: Glucose, Fructose.

I wrote glucose because when you form the carbohydrate by adding two diol monomers also known as glucose monomers. When you hydrolise the card, you get glucose just like you hydrolise protein polymer and got Amino acid monomer.

 

[Fate0]

How many electrons don't take part in bonding? That mcq..

22.

 

[muhammadali233]

22.

i wrote 10 how 22?explain brotha

 

[Awesome12]

I wrote glucose because when you form the carbohydrate by adding two diol monomers also known as glucose monomers. When you hydrolise the card, you get glucose just like you hydrolise protein polymer and got Amino acid monomer.

They mentioned you get amino acids as a result of hydrolysis of ...
But we had to mention the 'class of compounds' and not merely the name of the product formed

 

[Dark Destination]

I wrote glucose because when you form the carbohydrate by adding two diol monomers also known as glucose monomers. When you hydrolise the card, you get glucose just like you hydrolise protein polymer and got Amino acid monomer.

Their are a million possible products. You had to write a CLASS, i think. But maybe Glucose will be acceptable in the marking scheme.
Hydrolysis of maltose produces that. But Hydrolysis of Sucrose produces other things. Their are a million possibilities.

Just like their are a million NAMES of amino acids, but we know that Hydrolysis of Proteins produces AMINO ACIDS.

I wrote ''Sugar'' :/ I should have written ''Simple sugars'' ._. I lose a mark, right?

 

[Awesome12]

i wrote 10 how 22?explain brotha

You forgot the 2 electrons in the inner shells as well
You only counted the outer shells of electrons

 

[Dark Destination]

They mentioned you get amino acids as a result of hydrolysis of ...
But we had to mention the 'class of compounds' and not merely the name of the product formed

Organic compounds. Wo to saaray hi organic hain. Lipids bhi organic. Hydrocarbons. Ethane. Blah blah.