What is the product of the following reaction?
\(R-CN \frac{H_2 / Nl}{Na\left(H_{g}\right) / C_2 H_6 OH}\)
The options are:

What is the correct sequence of increasing reactivity of the following compounds towards nucleophilic addition reaction?
(A) Ethanal
(B) Propanone
(C) Propanal
(D) Butanone
Choose the correct answer from the options given below :

\(0.01\) M aqueous solutions of following salts were prepared. Their conductivity values were measured at \(25°C\). Which of the following will possess highest conductivity at \(25°C\)?

Read the passage carefully and answer the questions
The coordination compounds are of great importance. These compounds are widely present in the mineral, plants and animal world and are known to play many important functions in the area of analytical chemistry, metallurgy, biological systems, industry and medicine. For example, coordination compounds find use in many qualitative and quantitative chemical analysis. Some important metal extraction and purification make use of complex formation. Hardness of water can be estimated by stable complex formation of Ca\(^{2+}\) and Mg\(^{2+}\)
In photography undecomposed AgBr is removed as ___________

The standard reduction potentials are given as :
\(\text{E}^{\circ}_{\text{K}^{+}/\text{K}} = -2.93 \text{ V}\)
\(\text{E}^{\circ}_{\text{Ag}^{+}/\text{Ag}} = +0.80 \text{ V}\)
\(\text{E}^{\circ}_{\text{Cu}^{2+}/\text{Cu}} = +0.34 \text{ V}\)
\(\text{E}^{\circ}_{\text{Ni}^{2+}/\text{Ni}} = -0.25 \text{ V}\)
\(\text{E}^{\circ}_{\text{Li}^{+}/\text{Li}} = -3.05 \text{ V}\)
Arrange the following metals in increasing order of their reducing power :
A. K
B. Ag
C. Cu
D. Ni
E. Li
Choose the correct answer from the options given below :

A compound is formed by two elements P and Q. Atoms of the element Q (anions) make hcp lattice and those of element P (cations) occupies \(\frac{1}{8}\)th of the tetrahedral voids. What is the formula of the compound?

Ethyl bromide is converted to succinic acid by using the following reagents in steps:
 A. \(KCN\)
B. \(Br_2\)
C. \(KOH\ (alc.)\)
D. \(H_2O/H^+\)
Choose the correct sequence of conversion:

A coil with an inductance of 0.2 H has an inductive reactance of \( 62.8 \, \Omega \) at a certain frequency. The frequency is

Answer the question on the basis of passage given below :
There are three kinds of amines which are primary, secondary and tertiary amines. These amines may have alkyl group or aryl group or both alkyl and aryl groups. These amines can be distinguished from one another by various chemical tests.
An amine A on treatment with \(\text{NaNO}_2\) and \(\text{HCl}\) at 273-277 K, followed by treatment with ethyl alcohol, gives a compound B with empirical formula CH and molecular mass 78.
A is :

A startup company invested ₹ \(5,00,000\) in shares for 4 years. The value of the investment was: ₹ \(5,50,000\) at the end of first year, ₹ \(5,25,000\) at the end of third year, and on maturity, the final value stood ₹ \( 6,25,000\). The CAGR on the investment will be : [Given : \((1.25)^{\frac{1}{4}}=1.06\)]

The area (in sq. units) of the region \(\left\{(x, y): 3 x^2 \leq y \leq|x|\right\}\) is equal to :

The radii of curvature of the two surfaces of a concave lens are 20 cm each. The refractive index of the material of the lens is 1.5. The power of the lens would be -

Which of the following base is NOT present in DNA?