List of top Chemistry Questions

Benzoic acid contains

Consider the following statements related to colloids. 
(I) Lyophobic colloids are not formed by simple mixing of dispersed phase and dispersion medium. 
(II) For emulsions, both the dispersed phase and the dispersion medium are liquid. 
(III) Micelles are produced by dissolving a surfactant in any solvent at any temperature. 
(IV) Tyndall effect can be observed from a colloidal solution with dispersed phase having the same refractive index as that of the dispersion medium.
The option with the correct set of statements is

Convert the following into basic units:
  1. 28.7 pm
  2. 15.15 pm
  3. 25365 mg
Among the following species, identify the pair having same bond order $ C{{N}^{-}},O_{2}^{-},N{{O}^{+}},C{{N}^{+}} $
What weight of $CaCO_3$ must be decomposed to produce the sufficient quantity of carbon dioxide to convert $21.2\, kg$ of $Na_2CO_3$ completely in to $NaHCO_3$. [Atomic mass $Na = 23$, $Ca = 40$] $CaCO_3 \to CaO + CO_2$ $Na_2CO_3 + CO_2 + H_2O \to 2NaHCO_3$
The periodic table of today owes its development to two chemists namely
Number of water molecules in one drop of water, if $1$ ml of water has $20$ drops and $A$ is Avogadro number, is
Which of the following is true regarding coagulation of egg:
From the given information, calculate enthalpy of formation of 2 moles of $C_6H_6$(l) at 25°C. Given: $CH(C_6H_6$(l)) = –3264.6 kJ/mol $CH(C(s))$ = –393.5 kJ/mol $fH(H_2O(l))$ = –285.83 kJ/mol
The molarity of NaCl solution is 3 M. Calculate the morality of the solution. (Given density of the solution = 1.25 g/mL)
Consider the following reaction: The product is
hydrocarbons
Match the column.
Column-I
(Compounds)		Column-II
(Configurations)
A.TiCl4(1)e3t23
B.FeO42-(2)e2t20
C.FeCl42-(3)e2t23
D.MnCl42-(4)e0t20
Find out the shortest wavelength of paschen series for H- atom
Which of the following d-block elements has maximum unpaired electron in ground state electronic configuration?
Find out E cell of the given cell M | M2+ | | x2-|x.|
EºM2+I M = 0.34 V
E°x|x2- = 0.46 V
Product B is:
ethoxy benzene reacts with HNO3/H2SO4
Find out value of $C_p/C_y$ for an ideal gas undergoing reversible adiabatic process for which $P ∝ T^3$ is given
If Ksp of Ag2CO3 is 8×10−12, the molar solubility of Ag2CO3 in 0.1MAgNO3 is:
At 25∘C, the solubility product of Mg(OH)2 is 1.0×10−11. At which pH, will Mg2+ ions start precipitating in the form of Mg(OH)2 from a solution of 0.001MMg2+ ions ?
Which of the following statement is incorrect-
For a certain reaction, ΔHr is 400 kJ/mol and ΔS=0.2 kJ/mol K. Above what minimum temperature in Kelvin, the reaction becomes spontaneous.
IUPAC name of complex compound [Pt(Br)2(PPh3)2].
Consider following statements.
S1: IUPAC name is IUPAC name is 4-chloro-1,3-dinitrobenzene
S2: IUPAC name is IUPAC name is 2-methylaniline
Identify the product formed in the following reaction:
aqueous sodium hydroxide (NaOH)
Among the following anions, identify the anion which gives pale yellow precipitate with aq. AgNO3. The precipitate is partially soluble in aq. NH4OH solution.