Class 12th

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)

Which one of the following complexes exhibits chirality?

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

Kindly consider the following

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)

Kindly consider the following

Consider the following statements about amines and select the incorrect one.

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

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: SO₂(g) is adsorbed to a larger extent than H₂(g) on activated charcoal.
Reason R: SO₂(g) has a higher critical temperature than H₂(g).
In the light of the above statements, choose the most appropriate answer from the option given below.

Select the correct statements.
(A) Crystalline solids have long range order.
(B) Crystalline solids are isotropic.
(C) Amorphous solids are sometimes called pseudo solids
(D) Amorphous solids soften over a range of temperatures.
(E) Amorphous solids have a definite heat of fusion
Choose the most appropriate answer from the options given below: