Which one of the following species responds to an external magnetic field?

Consider the above reaction, the major product 'P' is :

The water soluble protein is :

Consider the given reaction, the product 'X' is :

The given reaction can occur in the presence of :

(a) Bromine water

(b) Br₂ in CS₂, 273 K

(c) Br₂/FeBr₃

(d) Br₂ in CHCl₃, 273 K

Choose the correct answer from the options gien below :

Given below are two statements, one is labelled as Assertion (A) and other is labelled as Reason (R).

Assertion (A) : Gabriel phthalimide synthesis cannot be used to prepare aromatic primary amines.

Reason (R) : Aryl halides do not undergo nucleophilic substitution reaction.

In the light of the above statements, choose the correct answer from the options given below :

For the following graphs,


Choose from the options given below, the correct one regarding order of reaction is :

Which one of the products of the following reactions does not react with Hinsberg reagent to form sulphonamide?

The ionic radii of K⁺, Na⁺, Al³⁺ and Mg²⁺ are in the order:

Which one of the following compounds of Group-14 elements is not known?

Which one among the following resonating structures is not correct?

The correct order of following 3d metal oxides, according to their oxidation numbers is :

(a) CrO₃, (b) Fe₂O₃, (c) MnO₂, (d) V₂O₅, (e) Cu₂O

Which one of the following compounds will liberate CO₂, when treated with NaHCO₃ ?

An organic compound 'A' C₄H₈ on treatment with KMnO₄/H⁺ yields compound 'B' C₃H₆O.

Compound 'A' also yields compound 'B' an ozonolysis. Compound 'A' is :

The number of sigma bonds in


is _______________.

Three moles of AgCl get precipitated when one mole of an octahedral co-ordination compound with empirical formula CrCl₃.3NH₃.3H₂O reacts with excess of silver nitrate. The number of chloride ions satisfying the secondary valency of the metal ion is ______________.

A source of monochromatic radiation of wavelength 400 nm provides 1000 J of energy in 10 seconds. When this radiation falls on the surface of sodium, x $$\times$$ 10²⁰ electrons are ejected per second. Assume that wavelength 400 nm is sufficient for ejection of electron from the surface of sodium metal. The value of x is ______________. (Nearest integer)

(h = 6.626 $$\times$$ 10^$$-$$34 Js)

CO₂ gas is bubbled through water during a soft drink manufacturing process at 298 K. If CO₂ exerts a partial pressure of 0.835 bar then x m mol of CO₂ would dissolve in 0.9 L of water. The value of x is ____________. (Nearest integer)

(Henry's law constant for CO₂ at 298 K is 1.67 $$\times$$ 10³ bar)

For the reaction

A + B $$\rightleftharpoons$$ 2C

the value of equilibrium constant is 100 at 298 K. If the initial concentration of all the three species is 1 M each, then the equilibrium concentration of C is x $$\times$$ 10^$$-$$1 M. The value of x is ____________. (Nearest integer)

Consider the cell at 25$$^\circ$$C

Zn | Zn²⁺ (aq), (1M) || Fe³⁺ (aq), Fe²⁺ (aq) | Pt(s)

The fraction of total iron present as Fe³⁺ ion at the cell potential of 1.500 V is x $$\times$$ 10^$$-$$2. The value of x is ______________. (Nearest integer)

(Given : $$E_{F{e^{3 + }}/F{e^{2 + }}}^0 = 0.77V$$, $$E_{Z{n^{2 + }}/Zn}^0 = - 0.76V$$)

At 298 K, the enthalpy of fusion of a solid (X) is 2.8 kJ mol^$$-$$1 and the enthalpy of vaporisation of the liquid (X) is 98.2 kJ mol^$$-$$1. The enthalpy of sublimation of the substance (X) in kJ mol^$$-$$1 is _____________. (in nearest integer)

When 10 mL of an aqueous solution of Fe²⁺ ions was titrated in the presence of dil H₂SO₄ using diphenylamine indicator, 15 mL of 0.02 M solution of K₂Cr₂O₇ was required to get the end point. The molarity of the solution containing Fe²⁺ ions is x $$\times$$ 10^$$-$$2 M. The value of x is __________. (Nearest integer)

Consider the complete combustion of butane, the amount of butane utilized to produce 72.0 g of water is ___________ $$\times$$ 10^$$-$$1 g. (in nearest integer)