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Class 12th Chemistry

Given below are two statements :
Statement I: Penicillin is a bacteriostatic type antibiotic.
Statement II: The general structure of penicillin is:

Choose the correct option:

 
0 Follower 3 Views

A
alok kumar singh

Contributor-Level 10

Kindly go through the solution

 

New answer posted

2 months ago

Class 12th Chemistry

Ammonium salts on heating with slaked lime liberate a colourless gas (X). Identify the incorrect statement for gas (X).
0 Follower 2 Views

V
Vishal Baghel

Contributor-Level 10

X is NH?
With mercurous nitrate it forms Hg + HgNH? Cl
Black

New answer posted

2 months ago

Class 12th Chemistry Solutions

The osmotic pressure exerted by a solution prepared by dissolving 2.0g of protein of molar mass 60 kg mol1 in 200 mL of water at 27°C is_______Pa. (nearest integer)

(Use R = 0.083 L bar mol1 K1)
0 Follower 2 Views

R
Raj Pandey

Contributor-Level 9

π = i * c * R * T = 2 * 0 . 8 3 * 3 0 0 6 0 * 1 0 3 = 0 . 0 0 4 1 5 b a r

= 415 Pa

New answer posted

2 months ago

Class 12th Coordination Compounds

Which one of the following complexes exhibits chirality?
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V
Vishal Baghel

Contributor-Level 10

[M (AA)? ]? complexes are chiral.

New answer posted

2 months ago

Class 12th Chemistry

R–CN --(i) DIBAL-H / (ii) H₂O→ R – Y
Consider the above reaction and identify “Y”
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alok kumar singh

Contributor-Level 10

Kindly go through the solution

 

New answer posted

2 months ago

Class 12th Chemistry

Kindly consider the following

 
0 Follower 2 Views

A
alok kumar singh

Contributor-Level 10

Kindly go through the solution 

 

New answer posted

2 months ago

Class 12th Chemistry

In a solid AB, A atoms are in ccp arrangement and B atoms occupy all octahedral sites. If two atoms from the opposite face are removed, then the resultant stoichiometry of the compound is AxBy. The value of x is ___________(nearest integer)
0 Follower 2 Views

R
Raj Pandey

Contributor-Level 9

After removal A = 4 - ( 1 2 * 2 ) = 3  

              After removal B = 4 – 1 = 4 (only two atoms are removed)

              Final formula of the compound = A3B4

New answer posted

2 months ago

Class 12th Chemistry

Kindly consider the following

 

 
0 Follower 3 Views

A
alok kumar singh

Contributor-Level 10

Kindly go through the solution

 

New answer posted

2 months ago

Class 12th Chemistry

Consider the following statements about amines and select the incorrect one.
0 Follower 1 View

V
Vishal Baghel

Contributor-Level 10

Diazonium salts of aromatic amines are more stable

New answer posted

2 months ago

Class 12th Chemistry

Compound A gives D-Galactose and D-Glucose on hydrolysis. The compound A is:
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A
alok kumar singh

Contributor-Level 10

Lactose is a disaccharide which is formed by forming C? -C? glycosidic linkage between D-galactose and D- glucose.
Lactose - (Hydrolysis)-> D - galactose + D - glucose

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