Practice Questions

TLS Online TPP Program

#Question id: 4127

Which one of the following statements about ribosomes is true?

#Part-A Aptitude & General Biotechnology

The large subunit contains rRNA molecules, the small subunit does not.
The RNA in ribosomes plays a structural, not catalytic, role.
There are about 25 of them in an E. coli cell.
There are two major subunits, each with multiple proteins.

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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?

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?

III. Δ[C]/3Δt