PIONEER JUNIOR COLLEGE - ASKnLearn

12
The responses A to D should be selected on the basis of
A B C D
1, 2 and 3 are 1 and 2 only are 2 and 3 only are 1 only is correct
correct
correct
correct
No other combination of statements is used as a correct response.
37 Which statements about the trend in properties of the halogens are correct?
1 The first ionisation energy decreases on descending down the group.
2 The electronegativity decreases on descending down the group.
3 The volatility decreases on descending down the group.
38 Which compounds would not be formed in the reaction of ethane with chlorine in the
presence of light?
1 CH 3 CH 2 CH 3
2 CH 3 CH 2 CH 2 CH 3
3 CH 3 CHCl 2
39 Which of the following statements are true about the amino acid tyrosine?
NH 2
HO
CH 2 CH
CO 2 H
Tyrosine
1 At pH 13, the amino acid migrates to the anode.
2 The amino acid exhibits stereoisomerism.
3 The amino acid reacts with neutral FeCl 3 to form a complex.
40 Compound Z has the structural formula as shown below.
H
O
N
O
Which of the following statements regarding Z are correct?
1 Z liberates ammonia gas on reaction with hot aqueous sodium hydroxide.
2 Z gives an orange precipitate when it is treated with 2,4-dinitrophenylhydrazine.
3 Heating Z with hydrochloric acid yields an amino acid.
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