What is the chemical composition of Tollen's reagent?

Answer the question on basis of passage given below :
Transition metals form a large number of complexes or coordination compounds in which the metal atoms are bound to a number of anions or neutral molecules. The valence bond theory explain the formation, magnetic behaviour and geometrical shapes while the crystal field theory explains the effect of different crystal fields on the degeneracy of d-orbitals energies of the central metal atom/ion. This provides for the quantitative estimation of orbital separation energies, magnetic moments and spectral and stability parameters.

List - I	List - II
A. Mn2+	I. Yellow
B. \(F e 3+\)	II. Green
C. \(N i 2+\)	III. Blue
D. \(Cu 2+\)	IV. Pink

Choose the correctanswer from the options given below:

Nucleophilic addition will be most favoured in:

The sweet smelling compound \(\text{[D]}\) is:
(1) Acid anhydride
(2) Acyl halide
(3) Aldehyde
(4) Ester
Explanation: The reaction between a carboxylic acid and an alcohol in the presence of acid
is Esterification. The product \(\text{[D]}\) is Methyl Acetate, which is an \textbf{Ester}.
Answer: (4)

Formaldehyde undergoes the Cannizzaro reaction because:
(A) It has alpha-hydrogen atom.
(B) It does not have alpha-hydrogen atom.
(C) It does not undergo self-oxidation and reduction on heating with concentrated alkali.
(D) It undergoes self-oxidation and reduction on heating with concentrated alkali.
Choose the correct answer from the options given below :

Which of the following vitamins is soluble in water?

Examples of corrosion include
(A) Rusting of iron
(B) Tarnishing of silver
(C) Green coating on copper and bronze
(D) Zinc coating on iron
Choose the correct answer from the options given below:

Match List I with List II

LIST I	LIST II
A. Range of \(\operatorname{cosec}^{-1} x\)	I. \((0, \pi)\)
B. Range of \(\tan ^{-1} x\)	II. \([0, \pi]-\left\{\frac{\pi}{2}\right\}\)
C. Range of \(\sec ^{-1} x\)	III. \(\left[-\frac{\pi}{2}, \frac{\pi}{2}\right]-\{0\}\)
D. Range of \(\cot ^{-1} x\)	IV. \(\left(-\frac{\pi}{2}, \frac{\pi}{2}\right)\)

Let \(f(x)=x^2+\frac{250}{x}\) be any function defined on \(R -\{0\}\), where \(R\) is the set of real numbers. Then which of the following are FALSE?

The angle of minimum deviation of an equilateral prism is equal to its refracting angle. The refractive index of the material of the prism is :

An equiconvex lens has a focal length of 20 cm and its radius of curvature is 30 cm . Its refractive index is

Read the paragraph given below and answer the question. Insulin used for diabetes was earlier extracted from slaughtered cattle and pigs. Insulin from an animal source, though caused some patients to develop allergy or other type of reactions. Insulin consists of two short polypeptide chains: chain A and chain B, that are linked bridges. In mammals, including human, insulin is synthesised as a pro-hormone. Patient with diabetes have:

Two slits 0.1 mm apart with screen 2 m away produce fringe separation with 500 nm light. The separation is :