The dehydration of alcohol follows the order :

Decreasing order of basicity for the following compounds:
(A) Ethylamine
(B) Diethylamine
(C) Ammonia
(D) Benzenamine
Choose the correct answer from the options given below:

Which of the following combination is stored in animals ?
(A) Amylose
(B) Cellulose
(C) Amylopectin
(D) Glycogen
(E) Lactose
Choose the correct answer from the options given below :

Arrange the following sets of compounds in order of their increasing boiling points.
A. Pentan-1-ol
B. Butan-1-ol
C. Butan-2-ol
D. Ethanol
E. Propan-1-ol
Choose the correct answer from the options given below :

The chemical composition of Tollens' reagent is

Which structure of proteins gives rise to fibrous and globular proteins?

Which of the following statements is not correct?

The values of \(\lambda\) for which the system of equation \(x+2 y+z=14,-x+y+z=10, x+\lambda y+z=2\) has unique solution is :

Which one of the following codons performs a dual function?

It is observed that only 25% of a given radioactive sample is left undecayed after 16 days. What is the decay constant of the sample in \(\text{day}^{-1}\)?

Arrange the following in the increasing order of their boiling points
(A) \(n- C _4 H _6 NH _2\)
(B) \(\left( C _2 H _5\right)_2 NH\)
(C) \(n- C _4 H _9 OH\)
(D) \(C _2 H _5 N\left( CH _3\right)_2\)
Choose the correct answer from the options given below:

Werner was the first to describe the bonding features in coordination compounds. But his theory could not answer basic questions like :
(i) Why only certain elements possess the remarkable property of forming coordination compounds ?
(ii) Why the bonds in coordination compounds have directional properties?
(iii) Why coordination compounds have characteristics magnetic and optical properties ?
Many approaches have been put forth to explain the nature of bonding in coordination compounds viz. Valence Bond Theory (VBT), Crystal Field Theory (CFT), Ligand Field Theory (LFT) and Molecular Orbital Theory (MOT).
We shall focus our attention on elementary treatment of the application of VBT and CFT to coordination compounds.
According to this theory, the metal atom or ion under the influence of ligands can use its ( \(n -1) d , ns np\) or ns, np, nd orbitals for hybridisation
to yield a set of equivalent orbitals of definite geometry such as octahedral, tetrahedral, square planar and so on.
These hybridised orbitals are allowed to overlap with ligand orbitals that can donate electron pairs for bonding.
\(CoCl _3 \cdot 6 NH _3\) gives 3 moles of AgCl on reacting with \(AgNO _3\).
The correct formula for this compound is :

The area (in sq. units) of the region bounded by the curve \(x^2 = 250y, y = 0\) and \(x = 50\) is