Solubility of any salt can be determined from_______________?
A. Ka
B. Kb
C. Kc
D. Ksp
Submitted by :- Jamil Ahmed
CHEMISTRY
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Residence time of methane in the atmosphere is___________________?
A. 3 – 7 days
B. 2 -3 days
C. 3 – 7 years
D. 2 – 3 years
Submitted by :- Jamil Ahmed
Three elements needed for the healthy growth of plants are_________________?
A. N P K
B. N K C
C. N S P
D. N Ca P
Submitted by :- Jamil Ahmed
Which of the following is a macro nutrient ?
A. boron
B. iron
C. copper
D. carbon
Submitted by :- Jamil Ahmed
Ka<1-3 means______________?
A. Very strong base
B. Very weak acid
C. Very strong acid
D. Very strong salt
Submitted by :- Jamil Ahmed
Idea of pH and pOH was put forward by________________?
A. Gibbs
B. Einstein
C. Sorenson
D. Chadwick
Submitted by :- Jamil Ahmed
When the value of Kc is very small then_______________________?
A. reaction is at start
B. product conc. Is maximum
C. reactant conc. Is minimum
D. reaction is completed
Submitted by :- Jamil Ahmed
In case of gases Kc is replaced by_______________?
A. Ka
B. Kb
C. Kp
D. K
Submitted by :- Jamil Ahmed
At start of reaction the concentration of reactants is_______________?
A. high
B. low
C. according to Kc
D. constant
Submitted by :- Jamil Ahmed
Chemical equilibrium state is_______________?
A. dynamic state
B. static state
C. free state
D. unidirectional state
Submitted by :- Jamil Ahmed