Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 23388
TLS Online TPP Program

#Question id: 18749

All the molecules generated during PCR will not be full length. Some will also be of intermediate length. Which of the statements is correct?

#Part-A Aptitude & General Biotechnology
  1. After first cycle, majority of the molecules will be full length and only some will be of intermediate length
  2. In the next cycle, each intermediate molecule will generate one intermediate molecule and one target molecule
  3. The number of full length molecules increase as number of cycles proceed
  4. The number of intermediate molecules increase geometrically and the number of target molecules increase arithmetically
More Questions
TLS Online TPP Program

#Question id: 21380

#Part-B Specialized Branches in Biotechnology

Sum of the powers of the concentration terms in the rate equation is called the __________ of the reaction.
TLS Online TPP Program

#Question id: 21726

#Part-B Specialized Branches in Biotechnology

For a first order chemical reaction, the rate constant
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?