The hydrolyis of ester is slow in the beginning and become faster after some time, this is due to :
Which of the following compound gives only oxy acid as a final roduct by the hydrolysis at room temperature?
For an ideal solution containing two volatile miscible liquids A and B following graph is given:
The vapour pressure of pure B (in mm of Hg) is :
From given graph
A : MeCH2COOH B : MeCH(Br)COOH
Which of the following gas is responsible for ozone hole/ozone layer depletion?
CI(g) obtained from Chloro Fluoro Carbon (CFC) is responsible for ozone hole/ozone layer depletion
The change in Gibbs free energy of the cell in which following reaction takes place
Which of the following given positive Fehling test?
Aliphatic aldehydes gives Fehling’s test +ve
Which of the following represents incorrect order of Vander waal force?
Neopentane < Isopentane < n-pentane
For the reaction A+B= Product, Rate law is given as rate = K[A]1/2 [B]2. The molecularity of the reaction is:
There is no meaning of molecularity for complex reaction.
If white bauxite is treated with concentrated solution of sodium hydroxide then SiO2 present in bauxite will :
White Bauxite conatins SiO2
The concentration of Ni2+ ions in a NiS solution is 2x10-6 M. If Ksp of NiS is 1.4 x 10-14 then which of the following will not cause the precipitation of NiS.
For precipitation min S2- required
having less than 7x10-9 will not precipitate NiS.
Tetrametaphosphoric acid and Tetrapolyphosphoric acid have same.
Tetrametaphosphoric acid = H4P4O12
Tetrapolyphosphoric acid = H6P4O13
A compound forms HCP structure. The total number of tetrahedral voids present in 2 mol of it will be-
No. of tetrahedral void per unit cell =2
So, no. of tetrahedral void in 2 mol of it = 4NA
Which of the following compounds will not produce a compound with offensive smell when treated with CHCI3/KOH?
B’ foes not given this reaction
Carbene well attack on O-
Total number of geometrical isomers of diamminebis(glycinato)platinum(IV) chloride is:
At 450 K. Calculate the mass of H2O present (in gm) in a 10 litre closed vessel which contains only CuSO4.5H2O crystal initally.
Given : CuSO4 + H2O → CuSO4(s) + 5H2O(g)
Kp = 3.2 * 10-4atm5
(Take R = 0.08 atm litre/mol K)
Product (X) is
Mr A has two correct informations about a particular orbital of hydrogen atom
The orbital has two radial nodes. Then orbital is identified as :
Conversiopn can be carried out by:
SBH won’t reduce C=C in this compound Raney Ni/H2 will reduce benzene ring also N2H4/H2O2 won’t reduce C=O
Which of the following option satifies salt (X):
An open end manometer consists of 0.75 moles of X(g) taken in a container of volume 24.63 lit. at 300 K. The level of mercury in the open tube is found to be 14 cm lower. The height difference manometer is heated to 450 K will be:
Which of the following is a good method for reduction of CO group as methioned below.
In acidic medium the given cyclic ether is not stable while in basic medium six membered cyclic ether is stable. LiAIH4 will convert ketone into 20 alc.]
Which of the following is not used in Methylene blue test ?
In the preparation of iron from Haematite (Fe2O3) by the reduction with carbon.
How much 80% pure iron may be produced from 120 kg of 90% pure Fe2O3?
Actual mole of product: (maximum mole of reactant) x
Mass of Fe produced = 94.5 kg
End product (B) of above reaction is
Observe th efollowing reaction:
Monomer of Nylon - 6:
Monomer → Caprolactum
In the cyanide process for extraction of silver and gold, the cyanide act as:
It is a fact