In Carius method of estimation of halogen, 0.15 g of an organic compound gave 0.12 g of AgBr. The percentage of Bromine in the compound is
If esterification of (-) lactic acid with CH3OH gives (+) methyl lactete (where - COOH of acid gets coverted to - COOR). Which statement is incorrect?
Configuration has changed.
Direction of rotation has changed.
Configuration doesn't change.
None of these
A substance which is insoluble in water and possesses a vapour pressure of 10-15 mm Hg at 373K can be conveniently purified by
1 - phenyl - 2 - chloropropane on treating with alcoholic KOH gives
1 - phenyl propane
3 - phenyl propane
1 - phenyl propanol - 2
1 - phenyl propanol - 1
What is C?
What is A?
Cis - 2 - butene
Trans - 2 - butene
1 - butene
What is true for A?
It is formed by E2 mechanism.
It can't show geometrical isomerism.
It is formed by E1 mechanism.
Loss of H+ occur from 3rd carbon.
A and B are:
None of these
Which is correct w.r.t. (A) and (B)?
Rate of E2 reaction will be slower for B.
Rate of E2 reaction will be slower for A.
Rate of E1 reaction will be different for A and B.
Rate of E1 reaction will be more for A in comparison to B.
Product A will be
The degree of dissociation of CH3COOH is influenced by
Either of these
Sulphide ions in alkaline solution react with solid sulphur to form polyvalent sulphide ions. The equikibrium constant for the formation of C and S32- from S and S2- ions are 1.7 and 5.3 respectively. Equilibrium constant for the formation of S32- from S32- and S is
Which species acts as stronger acid than formic acid in aqueous solution?
Which is not amphoteric?
Which is correct w.r.t non-ideal solution?
Solution obeys Raoult's Law over the entire range of concentration.
The vapour pressure is always higher than that predicted by Raoult's Law
The cause for the deviations lie in the nature of interactions at the molecular level
All of these
When 20g of CaCO3 were put into 10 litre of flask and heated to 8000 C , 35% of CaCO3 remained unreacted at equlibrium. KP for decomposition of CaCO3 is :
What is the PH of a 1M CH3COONa? Ka of acetic acid=1.8x10-5,Kw=10-14 mol2/l2