The electronic conductance depends on:
(A) The nature and structure of the metal
(B) Composition of metallic conductor
(C) The number of valence electrons per atom
(D) Temperature
(E) Number of ions
Choose the correct answer from the options given below:

The synthesis of alkyl fluoride is best achieved through

Which one of the following will exhibit maximum paramagnetic character?

Match List I with List II.

List-I	List-II
(A) Hoffmann bromamide reaction	I. Detection test for primary amines
(B) Carbylamine reaction	II. Hinsberg reagent
(C) Gabriel phthalimide synthesis	III. Amine with lesser number of carbon atoms
(D) Benzene sulphonyl chloride	IV. Reaction of phthalimide with KOH and R-X.

Choose the correct answer from the options given below:

The specific rate constant of a first order reaction depends on the

Answer the question on the basis of passage given below :
One of the notable features of the transition element is the great variety of oxidation states it may show in its compounds. The elements which give the greatest number of oxidation states occur in or near the middle of the series. Manganese, for example exhibits all the oxidation states from +2 to +7. The lesser number of oxidation states at the extreme ends is either due to losing or sharing of few electrons (Sc, Ti) or too many d electrons of higher valence. Early in the first series scandium (II) is virtually unknown and titanium (IV) which is more stable than Ti (III) or Ti (II). On the other end, the only oxidation state of zinc is \(+ 2\).
For balancing the given reaction, value of \(x\) will be.
\(4 FeCr_2 O_4+Na_2 CO_3+7 O_2 \longrightarrow x Na_2 CrO_4+2 Fe_2 O_3+8 CO_2\)

The half life of a radioactive element is 140 days. After 560 days, one gram of the element will be reduced to:

Excess of Lead from human body can be removed by using which of the following chelating agents?

Which of the following base is not present in DNA?

Select the correct relation between the electrochemical cell and Gibbs free energy for the following reaction
\(Zn (s)+ Cu ^{2+}(a q) \rightarrow Zn ^{2+}(a q)+ Cu (s)\)

The electric potential energy for a system of two point charges of \( 6 \, \mu C \) and \( -3 \, \mu C \) placed at points x = - 9 cm and x = 9 cm, respectively is

A series LCR circuit is connected to a 220 V variable frequency (a.c) supply. If L = 20 mH, \( C = 800/\pi^2 \, \mu \text{F} \) and R = 110 \( \Omega \). The frequency of the source, for which the average power absorbed by the circuit is maximum will be:

An insect ingests the inactive toxin, it is converted into an active form of toxin due to