📚NCERT Questions

1,675 solved questions with detailed explanations

41

What is the definition of pKa?

CBSE11
42

What is the purpose of a fractionating column in fractional distillation?

NCERT11
43

According to Planck's quantum theory, the energy (E) of a quantum of radiation is proportional to its frequency (ν) and is expressed as:

CBSE11
44

What is the correct IUPAC name for HOCH₂(CH₂)₃COCH₃?

NCERT11
45

What is the approximate pH range within which our body works?

CBSE10
46

Compounds like alcohols and glucose contain hydrogen but are not categorised as acids. This is because:

CBSE10
47

What is the octet rule?

CBSE11
48

Which of the following metal oxides exhibit both acidic and basic behavior?

CBSE10
49

In the oxidation number method, if the increase and decrease in oxidation number per atom are not equal, what action should be taken?

CBSE11
50

What is the general formula for alkenes, where 'n' represents the number of carbon atoms?

CBSE10