Acid present in acid rain may be
A. H2SO4
B. HNO3
C. both A and B
D. none
Acid present in acid rain may be Read More »
Chemistry
Residence time of methane in the atmosphere is
A. 3 – 7 days
B. 2 -3 days
C. 3 – 7 years
D. 2 – 3 years
Residence time of methane in the atmosphere is Read More »
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
Three elements needed for the healthy growth of plants are Read More »
Which of the following is a macro nutrient?
A. boron
B. iron
C. copper
D. carbon
Which of the following is a macro nutrient? Read More »
Idea of pH and pOH was put forward by
A. Gibbs
B. Einstein
C. Sorenson
D. Chadwick
Idea of pH and pOH was put forward by Read More »
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
When the value of Kc is very small then Read More »
In case of gases Kc is replaced by
A. Ka
B. Kb
C. Kp
D. K
In case of gases Kc is replaced by Read More »
At start of reaction the concentration of reactants is
A. high
B. low
C. according to Kc
D. constant
At start of reaction the concentration of reactants is Read More »