Outermost electronic configuration of a group 13 element, E, is 4s$$^2$$, 4p$$^1$$. The electronic configuration of an element of p-block period-five placed diagonally to element, E is:
JEE WhatsApp Group
Sign in
Please select an account to continue using cracku.in
↓ →
JEE WhatsApp Group
Join Our JEE Preparation Group
Prep with like-minded aspirants; Get access to free daily tests and study material.
Outermost electronic configuration of a group 13 element, E, is 4s$$^2$$, 4p$$^1$$. The electronic configuration of an element of p-block period-five placed diagonally to element, E is:
Login to view the detailed solution.
Which one of the following species doesn't have a magnetic moment of 1.73 BM, (spin only value)?
Login to view the detailed solution.
The hybridisations of the atomic orbitals of nitrogen in NO$$_2^-$$, NO$$_2^+$$ and NH$$_4^+$$ respectively are:
Login to view the detailed solution.
.webp)
A solution is 0.1M in Cl$$^-$$ and 0.001M in CrO$$_4^{2-}$$.
Solid AgNO$$_3$$ is gradually added to it. Assuming that the addition does not change in volume and
K$$_{sp}$$(AgCl) = 1.7 $$\times$$ 10$$^{-10}$$ M$$^2$$ and
K$$_{sp}$$(Ag$$_2$$CrO$$_4$$) = 1.9 $$\times$$ 10$$^{-12}$$ M$$^3$$.
Select correct statement from the following:
Login to view the detailed solution.
Cu$$^{2+}$$ salt reacts with potassium iodide to give:
Login to view the detailed solution.
The single largest industrial application of dihydrogen is:
Login to view the detailed solution.
.webp)
Metallic sodium does not react normally with:
Login to view the detailed solution.
Which one of the following pairs of isomers is an example of metamerism?
Login to view the detailed solution.
In Carius method, halogen containing organic compound is heated with fuming nitric acid in the presence of:
Login to view the detailed solution.
.webp)
Benzene on nitration gives nitrobenzene in presence of HNO$$_3$$ and H$$_2$$SO$$_4$$ mixture, where:
Login to view the detailed solution.
Major product P of above reaction, is:
Login to view the detailed solution.
Which one of the following gases is reported to retard photosynthesis?
Login to view the detailed solution.
.webp)
Consider two chemical reactions (A) and (B) that take place during metallurgical process:
(A) ZnCO$$_{3(s)} \xrightarrow{\Delta}$$ ZnO$$_{(s)}$$ + CO$$_{2(g)}$$
(B) 2ZnS$$_{(s)}$$ + 3O$$_{2(g)} \xrightarrow{\Delta}$$ 2ZnO$$_{(s)}$$ + 2SO$$_{2(g)}$$
The correct option of names given to them respectively is:
Login to view the detailed solution.
Spin only magnetic moment of an octahedral complex of Fe$$^{2+}$$ in the presence of a strong field ligand in BM is:
Login to view the detailed solution.
The major product (P) in the following reaction is:
Login to view the detailed solution.
The correct order of their reactivity towards hydrolysis at room temperature is:
Login to view the detailed solution.
In the above reactions, product A and product B respectively are:
Login to view the detailed solution.
Consider the above reaction, compound B is:
Login to view the detailed solution.
Bakelite is a cross-linked polymer of formaldehyde and:
Login to view the detailed solution.
Which one of the following statements is not true about enzymes?
Login to view the detailed solution.
The wavelength of electrons accelerated from rest through a potential difference of 40 kV is X $$\times 10^{-12}$$ m. The value of X is. (Nearest integer)
Given: Mass of electron = 9.1 $$\times 10^{-31}$$ kg
Charge on an electron = 1.6 $$\times 10^{-19}$$ C
Planck's constant = 6.63 $$\times 10^{-34}$$ Js
Login to view the detailed solution.
For a given chemical reaction A $$\to$$ B at 300 K the free energy change is -49.4 kJ mol$$^{-1}$$ and the enthalpy of reaction is 51.4 kJ mol$$^{-1}$$. The entropy change of the reaction is ___ JK$$^{-1}$$ mol$$^{-1}$$.
Login to view the detailed solution.
4 g equimolar mixture of NaOH and Na$$_2$$CO$$_3$$ contains xg of NaOH and yg of Na$$_2$$CO$$_3$$. The value of x is ___g. (Nearest integer)
Login to view the detailed solution.
When 0.15 g of an organic compound was analyzed using Carius method for estimation of bromine, 0.2397 g of AgBr was obtained. The percentage of bromine in the organic compound is ___. (Nearest integer)
[Atomic mass : Silver = 108, Bromine = 80]
Login to view the detailed solution.
Diamond has a three dimensional structure of C atoms formed by covalent bonds. The structure of diamond has face centred cubic lattice where 50% of the tetrahedral voids are also occupied by carbon atoms. The number of carbon atoms present per unit cell of diamond is ___.
Login to view the detailed solution.
The vapour pressures of A and B at 25$$^\circ$$C are 90 mmHg and 15 mm Hg respectively. If A and B are mixed such that the mole fraction of A in the mixture is 0.6, then the mole fraction of B in the vapour phase is $$x \times 10^{-1}$$. The value of x is ___. (Nearest integer)
Login to view the detailed solution.
Potassium chlorate is prepared by electrolysis of KCl in basic solution as shown by following equation.
6 OH$$^-$$ + Cl$$^- \to$$ ClO$$_3^-$$ + 3H$$_2$$O + 6e$$^-$$
A current of xA has to be passed for 10 h to produce 10.0 g of potassium chlorate. The value of x is ___. (Nearest integer)
(Molar mass of KClO$$_3$$ = 122.6 g mol$$^{-1}$$, F = 96500 C)
Login to view the detailed solution.
PCl$$_5$$(g) $$\to$$ PCl$$_3$$(g) + Cl$$_2$$(g)
In the above first order reaction the concentration of PCl$$_5$$ reduces from initial concentration 50 mol L$$^{-1}$$ to 10 mol L$$^{-1}$$ in 120 minutes at 300 K. The rate constant for the reaction at 300 K is x $$\times 10^{-2}$$ min$$^{-1}$$. The value of x is ___.
[Given log 5 = 0.6989]
Login to view the detailed solution.
For coagulation of 50 mL of a sol, 10 mL of 0.5M Cl$$^-$$ ion solution is required. What is the coagulating value of Cl$$^-$$ ion solution (Nearest integer)
Login to view the detailed solution.
An aqueous solution of NiCl$$_2$$ was heated with excess sodium cyanide in presence of strong oxidizing agent to form [Ni(CN)$$_6$$]$$^{2-}$$. The total change in number of unpaired electrons on metal centre is ___.
Login to view the detailed solution.
Educational materials for JEE preparation
Share