# NCERT Class 11-Math՚s: Chapter – 13 Limits and Derivatives Part 13 (For CBSE, ICSE, IAS, NET, NRA 2023)

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**Question 66**:

(A)

(B)

(C)

(D)

**Answer: (B)**

**Question 67**:

Let is

(A)

(B)

(C)

(D)

**Answer: (B)**

**Question 68**:

If then at is

(A) (1)

(B)

(C)

(D)

**Answer: (D)**

**Question 69**:

If then is

(A)

(B)

(C)

(D)

**Answer: (A)**

**Question 70**:

If then is

(A)

(B)

(C)

(D)

**Answer: (A)**

**Question 71**:

If at is

(A)

(B)

(C)

(D) Does not exist

**Answer: (A)**

**Question 72**:

If then at is

(A)

(B)

(C)

(D)

**Answer: (A)**

**Question 73**:

If , then is equal to

(A)

(B)

(C) Done not exist

(D)

**Answer: (B)**

**Question 74**:

If for some constant ‘a’ then is

(A)

(B)

(C) Does not exist

(D)

**Answer: (C)**

**Question 75**:

If , then is equal to

(A)

(B)

(C)

(D)

**Answer: (A)**

**Question 76**:

If , then is equal to

(A)

(B)

(C)

(D)

**Answer: (D)**

## Fill in the Blanks in Exercises 77 to 80

**Question 77**:

If , then ________

**Answer**:

**Question 78**:

then ________

**Answer**:

**Question 79**:

If then = ________

**Answer**:

**Question 80**:

________

**Answer**: