chemistry: exp. Test 2023

written by gogorabei | June 19, 2023

Results

-

Share your score!

Tweet your score!

#1. 25) (X,Y and Z) are three hydrocarbon derivatives X: can be oxidized and reduced Y: is isomer for alcohol Z: is produced from reaction of acid and alcohol Which of the following is correct?

a)(X) is aldehyde, (Y) is ether

a)(X) is aldehyde, (Y) is ether

b)(X) is ketone,( Z) is ester

b)(X) is ketone,( Z) is ester

c)(X) is aldehyde,( Z) is ether

c)(X) is aldehyde,( Z) is ether

d)(X) is alcohol, (Y) is ester

d)(X) is alcohol, (Y) is ester

#2. 26)Adding dopes of dil. hydrochloric acid to equilibrium system for sodium acetate solution causes ………..

a)Decreasing the concentration of sodium cations

a)Decreasing the concentration of sodium cations

b)Decreasing the concentration of acetic acid

b)Decreasing the concentration of acetic acid

c)Increasing the concentration of sodium cations

c)Increasing the concentration of sodium cations

d)Increasing the concentration of sodium acetate

d)Increasing the concentration of sodium acetate

#3. 27)The following sentences express properties of some elements in the first transition series. Which one represents the element of the highest density?

a)Has lower atomic mass than its proceeding element

a)Has lower atomic mass than its proceeding element

b)Has greatest magnetic moment in its atomic state

b)Has greatest magnetic moment in its atomic state

c)Its ion is hardly reduced from ( +3 ) to ( +2 )

c)Its ion is hardly reduced from ( +3 ) to ( +2 )

d)The biggest atomic size in the first transition series.

d)The biggest atomic size in the first transition series.