automobile exhaust and biological decomposition
combustion of coal and automobile exhaust
biological decomposition only
combustion of coal, automobile exhaust and biological decomposition
combustion of coal and biological decomposition
Correct answer is B
No explanation has been provided for this answer.
What is the formula of sodium gallate if gallium (Ga)shows an oxidation number of + 3?
NaGaO3
Na2Ga(OH)3
NaGa(OH)3
NaGa(OH)4
NaGaO
Correct answer is D
No explanation has been provided for this answer.
X + Y = Z is an equilibrium reaction. The addition of a catalyst?
increase the amount of Z produced in a given time
increases the rate of change in concentrations of X, Y and Z
increases the rate of disapearance of X and Y
increases the rate of the forward reaction
decreases the amounts of X and Y left after the attainment of equilibrium
Correct answer is B
No explanation has been provided for this answer.
60 cm3
10 cm3
40 cm3
30 cm3
70 cm3
Correct answer is A
No explanation has been provided for this answer.
40g
52g
100g
26g
14g
Correct answer is E
1000 cm3 of KOH contains 56 gm of KOH
250 cm3
of 1M KOH will contain (250)/(1000) x (56)/(1) = 14gms