Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 23284
TLS Online TPP Program

#Question id: 18927

Which of the following statements, if any, is false?

#Part-A Aptitude & General Biotechnology
  1. The polymerase chain reaction (PCR) is a cell-free method of DNA amplification.
  2. PCR is usually used to amplify a specific DNA sequence of interest using oligonucleotide primers that bind to closely flanking sequences.
  3. PCR is superior to cell-based DNA cloning for two major reasons: it is much quicker and it allows much greater DNA amplification.
  4. PCR requires the use of a heat-stable DNA polymerase to make copies of the template DNA.
More Questions
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
TLS Online TPP Program

#Question id: 21735

#Part-A Aptitude & General 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