chemistry Question Bank - Sarthaks eConnect

Principal quantum number defines the principal shell in which electron is revolving around the nucleus and Azimuthal quantum number describes the name of subshell and the shape of orbitals. The value sof the principal and Azimuthal quantum number for `23^(rd)` electron present in iron atom are :

The number of spectral lines that can be possible when electrons in `7^(th)` shell in different hydrogen atoms return to teh second shell is :

`XeF_6` is colourless crystalline solid. It undergoes hydrolysis in water. The final product obtained is an explosive solid. This explosive solid will be :

In which of the following pairs both the complenes show optical isomerism ?

Electron gain enthalpy increases across the period and decreases down the group. Which of the following order of electron gain enthalpy is correct ?

Most of the compounds of transition metlas are coloured in solid state of solutions. The transition metals which have either completely filled d-orbitals or completely empty d-orbitals are colourless. The colour of transition metal is due to

On dissoliving moderate amount of sodium metal in liquid `NH_3` at low temperature, which of the following does not occur ?

If `IF_7` molecule, central atom has all the bonded electrons i.e., no lone pair is present on the central atom. Structure of `IF_7` is

The product formed when toluene is heated in light with `Cl_2` and in absence of halogen carrier is

When benzene is heated with chlorine in the presence of sunlight, it forms :

react with `B_2H_6` in presence of `H_2O_2` produces :

Phosphorous in any organic compound can be estimate by the formula

`% of P = wt. of Mg_2P_2O_7 underset{wt.of compound}{stackrel{mbox(formed) xx 62}{rightarrow}} xx 100xx222` This formula is related to

IUPAC name of

Strength of acdi increases with the attachement of group showing –I effect and decreases withthe attachment of group showing +I effect. Which of the following is correct sequence of basic strength in aqueous solution ?

Arrange following in correct sequence of basic strength

Identify the transition element :–

Which of the following contains maximum number of unpaired electrons :–

The property of halogen, that indicated incorrect is :–

Ionic radii of `As^(3+), Sb^(3+), Bi^(3+)` follow the order :–

Match the column I (process) with column II( electrolyte)

	Column–I		Column–II
I.	Down's cell	(W)	Fused `MgCl_2`
II.	Dow sea water process	(X)	Fused `Al_2O_3+Na_3AlF_6`
III.	Hall-Herboutlts	(Y)	Fused `KHF_2`
IV.	Moissan	(Z)	Fused 40% NaCl + 60% `CaCl_2`

	I	II	III	IV
(a)	Z	W	X	Y
(b)	X	Y	Z	W
(c)	W	Z	X	Y
(d)	X	Z	W	Y

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