Among the given statements about electronic conductance, the correct statementsNo Solution are
(A) The electronic conductance depends on the nature and structure of the metal
(B) The electronic conductance depends on temperature (it decreases with increase in temperature)
(C) The composition of the metallic conductor remains unchanged during electronic conductance.
(D) The electronic conduction depends on the number of valence electrons per atom.
Choose the correct answer from the options given below:

Read the passage carefully and answer the questions
Sodium dichromate \(Na _2 Cr _2 O _7\) and Potassium dichromate \(K _2 Cr _2 O _7\) are strong oxidizing agents; in acidic solution, its oxidising action can be represented as follows :
\(Cr _2 O _7^{2-}+14 H ^{+}+6 e^{-} \rightarrow 2 Cr ^{3+}+7 H _2 O \left( E ^{\circ}=1.33 V\right)\)
The chromates and dichromates are interconvertible in aqueous solution depending upon pH of the solution.
The chromate ion is tetrahedral whereas the dichromate ion consists of two tetrahedra sharing one corner with \(Cr - O - Cr\) bond angle of \(126^{\circ}\)
Potassium permanganate is prepared by fusion of \(MnO _2\) with an alkali metal hydroxide and an oxidising agent like \(KNO _3\).
This produces the dark green \(K _2 MnO _4\) which disproportionates in a neutral or acidic solution to give permanganate. It is a strong oxidizing agent. Hydrogen ion concentration of the solution plays
an important part in the reduction of permanganate to manganate, manganese dioxide and manganese(II) salt.
Potassium permanganate forms dark purple (almost black) crystals which are isostructural with those of \(KClO _4\).
The salt is not very soluble in water \((6.4 g / 100 g\) of water at 293 K ), but when heated it decomposes at 513 K .
Choose the correct statement from the options given below :

Given below are the steps involved in the process of zone refining for removing impurities which are more soluble in the melt than solid state of the metal.
A. Impurities get concentrated at one end.
B. As the heater moves forward, the pure metal crystallises out of the melt left behind and the impurities pass to the next zone.
C. A mobile heater surrounding the rod of impure metal is fixed at its one end.
D. The end is cut off.
E. The molten zone moves along with the heater which is moved forward.
Choose the correct answer from the options given below:

In a reaction \(2A \to B\), the concentration of A decreases from 0.64 M to 0.22 M in 5 minutes. What is the rate of reaction (in \(M s^{-1}\)) during this interval ?

Hell-Volhard Zelinsky reaction is used for the formation of

Match List-l with List-II

List-l (Complex)	List-II (Property)
(A) Fuel Cell	(I) Anode: \(Zn (s) \rightarrow Zn ^{2+}+2 e^{-}\) Cathode: \(MnO _2+ NH _4^{+}+e^{-} \rightarrow MnO ( OH )+ NH _3\)
(B) A secondary cell	(II) Cathode: \(O _2(g)+2 H _2 O (l)+4 e^{-} \rightarrow 4 OH ^{-}(a q)\) Anode: \(2 H _2(g)+4 OH ^{-}(a q) \rightarrow 4 H _2 O (l)+4 e^{-}\)
(C) Mercury cells	(III) \(Pb (s)+ PbO _2(s)+2 H _2 SO _4(a q) \rightarrow 2 PbSO _4(s)+2 H _2 O (l)\)
(D) Leclanche cell (Simplified)	\((I V) Zn ( Hg )+ HgO (s) \rightarrow ZnO (s)+ Hg (l)\)

Choose the correct answer from the options given below :

Identify the chiral molecule from the following,

Choose the correct answer from the options given below :

Identify the correct statements regarding EcoRI:
(A) It cuts DNA between A and T when GAATTC palindrome is present in the DNA
(B) It produces blunt ends in the fragments
(C) The blunt ends facilitates the action of the enzyme
(D) It cuts DNA between G and A when GAATTC sequence is present in the DNA
(E) GAATTC is the palindrome recognized by EcoRI
Choose the correct answer from the options given below : Only

Arrange the following steps of curd formation from milk.
(A) Coagulation and partial digestion of milk protein
(B) Growth of starter culture
(C) Growth of lactic acid bacteria (LAB) in milk
(D) A small amount of curd is added as an inoculum to fresh milk
Choose the correct answer from the options given below:

The probability that X can take the values \(x_i\) has the following form:
\(P\left(X=x_i\right)=\left\{\begin{array}{ll}0.2 & \text { if } x_i=0 \\ k x_i & \text { if } x_i=1 \text { or } 2 \\ k\left(5-x_i\right) & \text { if } x_i=3 \\ 0 & \text { otherwise }\end{array}\right.\)
The value of P(X = 2) is:

The unit's digit in \(13^{61}\) is

The value of \(\frac{9}{4} \sin ^{-1}\left(\frac{2 \sqrt{2}}{3}\right)+\frac{9}{4} \sin ^{-1}\left(\frac{1}{3}\right)\) is :

Which of the following statements are correct?
(A) In reverse bias of a p-n junction, negative terminal of the battery is connected to p-side of the junction,
(B) Reverse bias does not support the potential barrier at the junction.
(C) In reverse bias, a few minority charge carriers cross the junction.
(D) Resistance of p-n junction is high in reverse bias, reducing the current to a negligible value.
Choose the correct answer from the given options.