MEDIUM
11th ICSE
IMPORTANT
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What are electron deficient compounds? Are BCl3 and SiCl4 electron deficient species? Explain.

Important Questions on Sample Question Paper 4

EASY
11th ICSE
IMPORTANT
ALL IN ONE ISC Chemistry CLASS 11>Chapter 18 - Sample Question Paper 4>SAMPLE QUESTION PAPER 4>Q 17
Write structure of BF3.
MEDIUM
11th ICSE
IMPORTANT
ALL IN ONE ISC Chemistry CLASS 11>Chapter 18 - Sample Question Paper 4>SAMPLE QUESTION PAPER 4>Q 17
Aluminium trifluoride is insoluble in anhydrous HF but dissolves on addition of NaF. Aluminium trifluoride precipitates out of the resulting solution when gaseous BF3 is bubbled through. Give reasons.
HARD
11th ICSE
IMPORTANT
ALL IN ONE ISC Chemistry CLASS 11>Chapter 18 - Sample Question Paper 4>SAMPLE QUESTION PAPER 4>Q 17
Why carbon can form pπ-pπ bonds with itself, whereas silicon does not?
MEDIUM
11th ICSE
IMPORTANT
ALL IN ONE ISC Chemistry CLASS 11>Chapter 18 - Sample Question Paper 4>SAMPLE QUESTION PAPER 4>Q 17
What are silicates? Given name of any two silicates with their formula.
HARD
11th ICSE
IMPORTANT
ALL IN ONE ISC Chemistry CLASS 11>Chapter 18 - Sample Question Paper 4>SAMPLE QUESTION PAPER 4>Q 18
Write down the products of ozonolysis of 1,2-dimethylbenzene (o-xylene). How does the result support Kekule structure for benzene?
MEDIUM
11th ICSE
IMPORTANT
ALL IN ONE ISC Chemistry CLASS 11>Chapter 18 - Sample Question Paper 4>SAMPLE QUESTION PAPER 4>Q 18
Illustrate Friedel-Crafts alkylation in benzene.
MEDIUM
11th ICSE
IMPORTANT
ALL IN ONE ISC Chemistry CLASS 11>Chapter 18 - Sample Question Paper 4>SAMPLE QUESTION PAPER 4>Q 18
Illustrate nitration in benzene.
HARD
11th ICSE
IMPORTANT
ALL IN ONE ISC Chemistry CLASS 11>Chapter 18 - Sample Question Paper 4>SAMPLE QUESTION PAPER 4>Q 18
Arrange the following set of compounds in order of their decreasing relative reactivity with an electrophile, E+.
Chlorobenzene, 2,4-dinitrochlorobenzene, p-nitrochlorobenzene. Also, explain your answer.