Example Questions & Products

 

Example Question

Which of the following is true regarding A and B?

A) They are Constitutional Isomers.
B) They are Diastereomers.
C) They are Enantiomers.
D) They are the same.

---

Example Question

Which of the following results from lesion 4?

A) A
B) B
C) C
D) D

---

Example Question

Bernoulli's equation is given below .Provided that the fluid is incompressible p1= p2 = p. h1 and h2 are the heights of water columns. g is acceleration due to gravity ( ~ 10M/sec per sec ). P1 and P2 are pressures at surface and orifice ( assume equal ) V1 and V2 are the velocities at the surface and through the orifice respectively. The opening is 5cm in diameter and is 5 M below the surface of the water.

What is the velocity of water that will escape through a small orifice in a tank where the velocity at the surface is assumed to be neglible and the pressure at the surface and orifice are equal?

A) 20M/s
B) 15M/s
C) 12.5M/s
D) 10M/s

---

Example Question

In assessing whether reactions are spontaneous a number of factors may be considered dH ( change in Enthalpy ) : a Negative value tends to make a reaction spontaneous dS ( Change in Entropy ) : A Positive value tends to make a reaction spontaneous. dG ( Change in free energy ) : A reaction at constant temperature and pressure will be spontaneous if dG is negative. If dG is positive the reaction is not spontaneous . If dG is 0 the system will be in equillibrium and there will be no reaction either way.

Given the Helmholtz equation : dG=dH-TdS which is true at all temperatures for a reaction to be spontaneous?

A) dH<0 , dS>0
B) dH<0, dS<0
C) dH>0 , dS>0
D) dH>0, dS<0

---

Example Question

The general equation of Acid-Catalyzed Hydration of Alkenes added to a Double Bond is in accordance with Markovnikov's rule shown below.

---

Example Question

The most common hereditary clotting deficiency is Haemophilia A . It has a Sex Linked inheritance pattern although about 1/3 of cases occur from spontaneous mutations. These patients may suffer from spontaneous bleeding and difficult Haemeostasis post operatively. Minor surgery such as Dental extraction can be potentially quite serious. A X linked recessive inheritance pattern predisposes males as the sex more likely to be afflicted. Females carry XX alleles and Males XY. Considering the mutant allele to be Xh and the normal allele to be XH consider the following Punnet squares.

Which of these represents the mating between an affected Male and a normal female?

A) A
B) B
C) C
D) D

---