# NCERT Class 12-Mathematics: Exemplar Chapter – 7 Integrals Part 6 (For CBSE, ICSE, IAS, NET, NRA 2022)

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**Question 23**:

is equal to

(A)

(B)

(C)

(D)

**Answer**:

(B) Is the correct answer?

Since by putting , we get

**Question 24**:

If and *g* are continuous functions in satisfying and , then is equal to

(A)

(B)

(C)

(D)

**Answer**:

B is the correct answer. Since

Or

**Question 25**:

If , then *a* is equal to

(A)

(B)

(C)

(D)

**Answer**:

(C) is the correct answer, since which gives

**Question 26**:

(A)

(B)

(C)

(D)

**Answer**:

(B) is the correct answer, since

**Question 27**:

(A)

(B)

(C)

(D)

**Answer**:

(B) Is the correct answer, since

Therefore,