3 g of oxide of a metal is converted to chloride completely and it yielded 5 g of chloride. The equivalent weight of metal is
12
20
33.25
2.325
20 mL of 0.25 N strong acid and 30 mL 0·2 N of strong base are mixed; the resulting solution is
0.02 N acidic
0.025 N basic
0.02 N basic
0.025 N acidic
The rate of forward reaction is two times that of reverse reaction at a given temperature and identical concentration. K
2.5
2.0
0.5
1.5
Ammonium ion is
neither an acid nor base
both an acid and a base
a conjugate acid
a conjugate base
A is an aqueous acid; B is an aqueous base. They are diluted separately, then
pH of A decreases and pH of B increases
pH of A increases and pH of B decreases till pH in each case is 7
pH of A and B increase
pH of B and A decrease
Compounds with high heat of formation are less stable because
high temperature is required to synthesise them
molecules of such compounds are distorted
it is difficult to synthesise them
energy rich state leads to instability
D.
energy rich state leads to instability
Compounds with high heat of formation are less stable because energy rich state leads to instability.
Heat of neutralisation of weak acid and strong base is less than the heat of neutralisation of strong acid and strong base due to
energy has to be spent for the total dissociation of weak acid
salt of weak acid and strong base is not stable
incomplete dissociation of weak acid
incomplete neutralisation of weak acid
A radio isotope will not emit
gamma and alpha rays simultaneously
gamma rays only
alpha and beta rays simultaneously
beta and gamma rays simultaneously
Chemical bond implies
attraction and repulsion
attraetion and repulsion balanced at a particular distance
attraction
repulsion