chemistry Question Bank - Sarthaks eConnect

What will the formatin of `CO_2` is ?

`C+O_2->CO_2 triangleH=X`

`CO+1/2O_2->CO_2 triangleH=Y`

A compound obtained by burning of an element belongs to `2^(nd)` group and `3^(rd)` period when passes through red litmus paper it turns blue the equivalent weight of compounds is :

Which of the following plots represents the behaviourof an ideal binary liquid solution.

An exothermic chemical reactio occurs in two steps as follows : I. A + B `->` X (fast) II. X `->` AB (Slow) The progress of the reaction can be best represented by

Freundlich gave the relationship between the gas adsorbed by solid adsorbent surface and pressure of the gas at a particular temperature. Which of the following equatino represent Freundlich adsorption isotherm ?

Arrhenius proposed a quantitative relationship between rate constant and temperature as k = `Ae^-((Ea) /(RT))` or ln k = `ln A – E_a/(RT)`. What will be the slope of graph when ln k is plotted versus` 1/T `?

A container has hydrogen and oxygen mixture in ratio of 1:1 by wight, then

Spontaneity of a process is decided by the value of `triangleG` . A negative value of `triangleG` shows a spontaneous process. Since, the value of `triangleG` depends upon `triangleG` and `triangleH`, these two also play an important role for deciding spontaneity of a process. THe condition for spontaneity of any chemical reaction, if

The space occupied in different packings is called packing fraction. Packing fraction = totalvolumeof sphere / volumeof theunit cell . Fraction of total volume occupied by atoms in a simple cubic unit cell is

A solid is made of two element P and Q. Atoms P are in ccp arrangement and atoms Q occupy all the octahedral voids and half of the tetrahdedral voids, then the simplest formula of the compound is

Which of the following is not the assumption of kinetic theory of gases

What amount of current will be required to evolve 20 g of chlorine in 6 h from HCl solution

When copper metal is dipped in a solution of `HNO_3`,it produces copper nitrate and some gasous molecules, the change in oxidation numbe of nitrogen is :

The pH of teh solution is defined as the negative logarithm of the concentration of hydrogen ions which is contains. pH of 0.365 `gL^(–1)` HCl solution will be

Equilibrium constant of a chemical reaction si 1.5 and rate constant of forward reaction is `7.5×10^(–4)`. Then, rate constant of backward reaction will be

`NaBH_4` on reaction with `I_2` produces a compound X, X on reaction with oxygen produces an anhydride. X on reactino with `NH_3` forms an adduct. X is :

Boron on reaction with `CO_2` and `H_2O` produces boron hydride as a major constituent the other byproduct produced in these reactions are :

Werner's theory was the first successful theory, which explained the properties of complexes. According to Werner's theory the primary and secondary valence of `[Co(Cl_3(NH_3)_3]Cl_3` is :

Potassium superoxide is the inorganic compound with the formula `KO_2`. It is a yellow solid that decomposes in moist air. It is a rare example of a stable salt of the superoxide ion. Which of the following statement is incorrect regarding potassium superoxide :

A compound A is obtained by reactino between first member of `1^(st)` group element and lightest element of periodic table, then correct statement about compound A is :

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