List of top Chemistry Questions asked in UP Board XII

Write the structural formula of fructose. How is it different from the structure of glucose?
Give a chemical test for differentiating the following couple of compounds: (i) Secondary and Tertiary Amines
(ii) Methyl Amine and Dimethyl Amine
(iii) Ethylamine and Aniline
Write short notes on the following: (i) Tyndall Effect
(ii) Brownian Movement
(iii) Coagulation
Write the formulas of the following coordination compounds: (i) Tetracarbonyl nickel (0)
(ii) Dichlorobis(ethan-1, 2-diamine) cobalt(III) chloride
(iii) Pentamine carbonato cobalt(III) chloride
(iv) Tetramine aquachloro cobalt(III) chloride
What are polypeptides? Explain with example.
Explain the following: (i) Why is the atomic size of noble gases comparatively larger?
(ii) Being almost equal in electronegativity, Nitrogen forms hydrogen bond while chlorine does not.
What is Kohlrausch law? Write its applications.
Explain the following: (i) Electrophoresis
(ii) Dialysis
Explain the following defects: (i) Interstitial
(ii) F-centred
Justify with reasons:
[NiCl\(_4\)]\(^{2-}\) is paramagnetic while [Ni(CO)\(_4\)] is diamagnetic, although both are tetrahedral.
3.0 g of acetic acid is dissolved in 80 g of benzene. The molality of the solution is
The base not present in DNA is
Hinsberg reagent is
An element forms CCP lattice. If the length of its core of unit cell is 408.6 pm, then calculate the density of the element. (Atomic weight = 107.9 u)