A cell is formed by combining given electrodes with \(Zn ^{2+} \mid Zn ( s )\left(E^{\circ}=-0.76 V\right)\). Arrange the following in decreasing order of \(E _{\text {cell }}^{\circ}\).
Cell Notation: \(Zn ( s ) \mid Zn ^{2+} \|\) Given electrode
(A) \(Ag ^{+} \mid Ag ( s ): E^{\circ}=+0.80 V\)
(B) \(Na ^{+} \mid Na ( s ): E^{\circ}=-2.71 V\)
(C) \(Fe ^{2+} \mid Fe ( s ): E^{\circ}=-0.44 V\)
(D) \(Cu ^{+} \mid Cu ( s ): E^{\circ}=+0.52 V\)
Choose the correct answer from the options given below:

Which of the following sols are correctly matched with their corresponding charges ?
(A) \(\text{Cr(OH)}_3\) sol : negatively charged sol
(B) \(\text{TiO}_2\) sol : positively charged sol
(C) \(\text{CdS}\) sol: positively charged sol
(D) Gum: negatively charged sol
(E) Silver sol : positively charged sol
Choose the correct answer from the options given below :

Which of the following statements are true ?
A. Noble gases have low M.P. or B.P. due to weak dispersion forces
B. All noble gases have completely filled \(ns^2np^6\) electronic configuration
C. \(XeF_2\) and \(XeF_6\) are colourless crystalline solid
D. \(XeO_3\) has pyramidal geometry
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The flow of solvent from pure solvent side to solution side across a semipermeable membrane can be stopped if some extra pressure is applied on the solution. This pressure that just stops the flow of solvent is called

Read the passage carefully and answer the questions.
Electrochemistry is the study involving two types of processes. One type involves the production of electricity from the energy released during a spontaneous chemical reaction. Galvanic cells like Daniel cells are used to produce electricity from the redox reaction. Nernst equation of a galvanic cell gives the relation between the standard cell potential and the concentration of the species involved in the redox reaction. The second type of study involves the cells in which electrical energy is used to bring about the chemical reactions in a non-spontaneous process. The conductance of electrolytic solution depends on many factors including the nature of the electrolyte and the dimensions of the electrolytic cell.
Faraday's laws of electrolysis are related to:

Aniline upon heating with concentrated \(HNO_3\) and concentrated \(H_2SO_4\) mixture gives:

Elements of group-15, 16 and 17 form compounds with hydrogen with general formula MH3, \(H 2 M\) and HX (called hydrogen halides). Stability of these hydrides, along with M-H bond strength and basic nature decreases down the group. Boiling point of these hydrides mainly depends on the strength of their inter molecular forces.
Bond angle (HMH) among hydrides of group-16 decreases down the group because:

Which of the following statements is incorrect?

Three charges Q, +2q and +2q are placed at the vertices of an equilateral triangle. If the net electrostatic potential energy of the system is zero, then Q is equal to

The first isolated restriction endonuclease was:

The most suitable substrates for preparation of following alcohol is

Match List-I with List-II

List-I (Integral)	List-II (Value)
(A) \(\int_{-1}^1(|x|+1) d x\)	(I) 0
(B) \(\int_{-2}^2|x+1| d x\)	(II) 2
(C) \(\int_{-1}^1 3|x|^2 d x\)	(III) 5
(D) \(\int_{-1}^1 x|x| d x\)	(IV) 3

Choose the Correct answer from the options given below :

Two dice are thrown simultaneously. If X denotes the number of sixes, then the variance of X is: