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📚NCERT Questions — CBSE12

275 solved questions with detailed explanations

Exams

All ExamsCBSE11(591)CBSE10(499)CBSE12(275)NCERT11(210)NCERT10(100)
41

Which of the following tests is used to distinguish between aldehydes and ketones, producing a bright silver mirror?

CBSE12
42

The reaction of carboxylic acids with ammonia followed by heating yields which class of compounds?

CBSE12
43

Which of the following reactions follows Markovnikov's rule?

CBSE12
44

Why cannot aromatic primary amines be prepared by Gabriel phthalimide synthesis?

CBSE12
45

According to Saytzeff's rule, in dehydrohalogenation reactions, the preferred product is the alkene that:

CBSE12
46

Which polyhalogen compound was once widely used as a general anaesthetic but was replaced by less toxic alternatives?

CBSE12
47

What is the IUPAC name for (CH3)2CHNH2?

CBSE12
48

The sequence of amino acids in a polypeptide chain is referred to as the:

CBSE12
49

Which of the following reagents is used in Rosenmund reduction for the preparation of aldehydes?

CBSE12
50

A compound gives a positive Tollens' test but does not respond to Fehling's test. Which of the following could be the compound?

CBSE12
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