Acetaldehyde and acetone differ in their reaction with
As methyl group donates electrons, hydrogen atom withdraws electrons; this makes the molecule more polarized, and it makes the molecule more reactive. Compared to acetone, acetaldehyde has less stearic effects, and other molecules can approach easily. Due to these reasons, acetaldehyde is more reactive than acetone.
Among the following hydrocarbons which decolourise bromine water, but does not give precipitate with ammonical AgNO3 is
A triglyceride can have how many different acyl groups?
Which of the following does not react with AgCl?
The order of filling of electrons in the orbitals of an atom is
In a mole of water vapours at STP, the volume actually occupied or taken by the molecules (i.e., Avogadro's No.xvolume of one molecule) is
Which of the following is aromatic?
Which of the following phenomenon will occur when two atoms of the elements having same spin of electron approach for bonding?
Pi-bonds do not alter the shape, but merely shorten the
A carbon-carbon double bond consists of one sigma bond and one pi bond. This double bond is stronger than a single covalent bond (599 kJ/mol for C = C vs. 348 kJ/mol for C—C) and also shorter with an average bond length of 1.33 Angstroms (133 pm).
Which of the following is the strongest acid?
Which relation is correct ?
Chemical equilibrium is dynamic in nature, because
The two opposite processes, forward reaction and reverse reaction, keep on occurring in it all the time but at exactly equal rates (or equal speeds)
A chemical reaction does not stop after reaching the equilibrium state, only the rate of the forward and the reverse reactions become equal at the equilibrium state
The order of reaction is decided by
The bond dissociation energies of H₂,Cl₂ and HCl are 104, 58 and 103 kcal respectively. The enthalpy of formation of HCl gas will be
Soaps are classified as
The total number of acyclic isomers including stereoisomers of C₄H₇Cl are
The total number of isomers, including the stereo-isomers, with formula C4H7Cl is 12. Out of this, 3 are cyclic and the remaining are acyclic.
The charge required to liberate 112 ml of hydrogen from acidified water is
Which of the following ions are paramagnetic in character?
Ni2+ is paramagnetic in nature as it has unpaired electrons.
The value of gas constant per degree per mole is approximately
When ammonium chloride is added to ammonia solution , the pH of the resulting solution will be
The alkene formed as a major product in the above elimination reaction is
A compound with molecular formula C₇H₁₆ shows optical isomerism, the compound will be
The phenomenon of radioactivity was discovered by
Calcium acetate on heating results in
Which of the following chemicals are used to manufacture methyl isocyanate that caused "Bhopal Tragedy " ? (a) Methyl amine (b) Phosgene (c) Phosphine (d) Dimethyl amine
Select correct statement(s)about carbene:
Bakelite is a product formed from
If 0.183 of an aromatic monobasic acid requires 15ml of N/10 sodium hydroxide for complete neutralisation, then molecular weight of the acid is
Milliequivalents of NaOH = 15×1/10 = 1.5 = 0.0015 equivalents
For neutralization equivalents of acid = 0.0015
As the acid is monobasic, n factor= 1, so moles of acid required = 0.0015/1 = 0.0015
weight/MW = 0.183g/0.0015 MW
What is oxidation number of Fe in Fe(CO)₅?
The second order Bragg diffraction of X-rays with λ = 1.00 Å from a set of parallel planes in a metal occurs at an angle of 60°. The distance between the scattering planes in the crystal is
If 20 ml of 0.4 N NaOH solution completely neutralises 40 ml of a dibasic acid, the molarity of the acid solution is
The vapour density of pure ozone would be
The maximum amount of BaSO₄ precipitated on mixing BaCl₂ (0.5M) with H₂SO₄ (1 M) will correspond to
Milk is an example of
Milk is an example of the oil-in-water type of emulsion. In milk liquid fat globules are dispersed in water. Other examples are, vanishing cream etc.