Experimentally reducing a functional group cannot be done by which one of the following reagents?

Which one of the following given graphs represents the variation of rate constant (k) with temperature (T) for an endothermic reaction?

Identify A in the following reaction.

In the following sequence of reactions a compound A, (molecular formula C₆H₁₂O₂) with a straight chain structure gives a C₄ carboxylic acid. A is :

The Crystal Field Stabilization Energy (CFSE) and magnetic moment (spin-only) of an octahedral aqua complex of a metal ion (M^z+) are $$-$$0.8 $$\Delta$$₀ and 3.87 BM, respectively. Identify (M^z+) :

Which one of the following compounds is aromatic in nature?

In the given chemical reaction, colors of the Fe²⁺ and Fe³⁺ ions, are respectively :

5Fe²⁺ + MnO$$_4^ - $$ + 8H⁺ $$\to$$ Mn²⁺ + 4H₂O + 5Fe³⁺

The stereoisomers that are formed by electrophilic addition of bromine to trans-but-2-ene is/are :

In the following sequence of reactions,


The compounds B and C respectively are :-

Given below are two statements :

Statement I : The nucleophilic addition of sodium hydrogen sulphite to an aldehyde or a ketone involves proton transfer to form a stable ion.

Statement II : The nucleophilic addition of hydrogen cyanide to an aldehyde or a ketone yields amine as final product.

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

Which one of the following gives the most stable Diazonium salt?

The potassium ferrocyanide solution gives a Prussian blue colour, when added to :

Number of paramagnetic oxides among the following given oxides is ____________.

Li₂O, CaO, Na₂O₂, KO₂, MgO and K₂O

Identify the element for which electronic configuration in +3 oxidation state is [Ar]3d⁵ :

The molar solubility of Zn(OH)₂ in 0.1 M NaOH solution is x $$\times$$ 10^$$-$$18 M. The value of x is _________ (Nearest integer)

(Given : The solubility product of Zn(OH)₂ is 2 $$\times$$ 10^$$-$$20)

For the reaction, 2NO₂(g) $$\rightleftharpoons$$ N₂O₄(g), when $$\Delta$$S = $$-$$176.0 JK^$$-$$1 and $$\Delta$$H = $$-$$57.8 kJ mol^$$-$$1, the magnitude of $$\Delta$$G at 298 K for the reaction is ___________ kJ mol^$$-$$1. (Nearest integer)

The sum of oxidation states of two silver ions in [Ag(NH₃)₂] [Ag(CN)₂] complex is _____________.

The number of atoms in 8g of sodium is x $$\times$$ 10²³. The value of x is ____________. (Nearest integer)

[Given : N_A = 6.02 $$\times$$ 10²³ mol^$$-$$1

Atomic mass of Na = 23.0 u]

If 80 g of copper sulphate CuSO₄ . 5H₂O is dissolved in deionised water to make 5L of solution. The concentration of the copper sulphate solution is x $$\times$$ 10^$$-$$3 mol L^$$-$$1. The value of x is _____________.

[Atomic masses Cu : 63.54u, S : 32u, O : 16u, H : 1u]

A 50 watt bulb emits monochromatic red light of wavelength of 795 nm. The number of photons emitted per second by the bulb is x $$\times$$ 10²⁰. The value of x is __________. [Given : h = 6.63 $$\times$$ 10^$$-$$34 Js and c = 3.0 $$\times$$ 10⁸ ms^$$-$$1]

The spin-only magnetic moment value of $$B_2^ + $$ species is _____________ $$\times$$ 10^$$-$$2 BM. (Nearest integer) [Given : $$\sqrt 3 $$ = 1.73]

If the conductivity of mercury at 0$$^\circ$$C is 1.07 $$\times$$ 10⁶ S m^$$-$$1 and the resistance of a cell containing mercury is 0.243$$\Omega$$, then the cell constant of the cell is x $$\times$$ 10⁴ m^$$-$$1. The value of x is ____________. (Nearest integer)

A peptide synthesized by the reactions of one molecule each of Glycine, Leucine, Aspartic acid and Histidine will have _________ peptide linkages.