TLS Online TPP Program

#Question id: 12580


When levels of CO2 are experimentally increased, C3 plants generally respond with a greater increase in productivity than C4 plants. This is because

#Part-B Specialized Branches in Biotechnology
  1. C   plants are more efficient in their use of CO2
  2. C   plants are able to obtain the same amount of CO2 by keeping their stomata open for shorter periods of time.
  3. C4 plants don’t use CO2 as their source of carbon.
  4. C3 plants are more limited than C4 plants by CO2 availability because of transpirational water loss.
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TLS Online TPP Program

#Question id: 21727

#Part-B Specialized Branches in Biotechnology

In the reaction H2O2(aq) → H2O(l) + ½ O2(g), the initial concentration of H2O2 is 0.2546 M, and the initial rate of reaction is 9.32×10–4 M s–1. What will be [H2O2] at t = 35 s?

TLS Online TPP Program

#Question id: 21728

#Part-B Specialized Branches in Biotechnology

In the reaction A → products, we find that when [A] has fallen to half of its initial value, the reaction proceeds at the same rate as its initial rate. Is the reaction zero order, first order, or second order?

TLS Online TPP Program

#Question id: 21729

#Part-B Specialized Branches in Biotechnology

In the reaction, A → products, with the initial concentration [A]0 = 1.512 M, [A] is found to be 1.496 M at t = 30 s. With the initial concentration [A]0 = 2.584 M, [A] is found to be 2.552 M at t = 1 min. What is the order of this reaction?

TLS Online TPP Program

#Question id: 21731

#Part-B Specialized Branches in Biotechnology

The smog constituent peroxyacetyl nitrate (PAN) dissociates into peroxyacetyl radicals and NO2(g) in a first order reaction with a half-life of 32 min. 
If the initial concentration of PAN in an air sample is 2.7×1015 molecules/L, what will be the concentration 2.24 h later?

TLS Online TPP Program

#Question id: 21733

#Part-B Specialized Branches in Biotechnology

A rate law __________.

TLS Online TPP Program

#Question id: 21735

#Part-B Specialized Branches in Biotechnology

Given the following equation (2A+B  3C). Which of the following correctly displays the rate of the reaction?
I. -Δ[A]/2Δt
II. Δ[B]/Δt
III. Δ[C]/3Δt