Post Utme Biology Past Questions and Answers

Question 791:

How many conjugal are involved in sexual reproduction of paramecium?

A. 1
B. 2
C. 4
D. 8

Question 792:

Which of the following is a general method of preparing acid?

A. Direct combination of constituent elements
B. Double decomposition involving a salt solution
C. Reaction between a hydride and water
D. Reaction between a base and an amphoteric oxide
E. Dissolution of hydroxide followed by neutralization

Question 793:

The loss of molecules of water crystallization to the atmosphere by some crystalline is known as _____________

A. Efflorescence
B. Effervescence
C. Phosphorescence
D. Florescence
E. Deliquescence

Question 794:

Which of the following is alkanol?

A. \(CH_3(CH_2)_20H\)
B. \(CH_3CH=CHCH_20H \)
C. \(CH_3(CH_2)_30H |)
D. \(CH_3CH(OH)CH_3 \)
E. \(C(CH_3)_30H\)

Question 795:

Which of the following is the relative molecular mass of a compound which has empherical formula \(CH_20\)? (H=1, C=12, O= 16).

A. 42
B. 45
C. 126
D. 145
E. 180