# NCERT Class 12-Math՚s: Chapter – 9 Differential Equations Part 14 (For CBSE, ICSE, IAS, NET, NRA 2022)

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**Question 49**:

The differential equation represents:

(A) Family of hyperbolas

(B) Family of parabolas

(C) Family of ellipses

(D) Family of circles

**Answer: (D)**

**Question 50**:

The general solution of is:

(A)

(B)

(C)

(D)

**Answer: (A)**

**Question 51**:

The degree of the differential equation is:

(A)

(B)

(C)

(D)

**Answer: (A)**

**Question 52**:

The solution of is:

(A)

(B)

(C)

(D)

**Answer: (B)**

**Question 53**:

Integrating factor of the differential equation is:

(A)

(B)

(C)

(D)

**Answer: (B)**

**Question 54**:

The solution of the differential equation is:

(A)

(B)

(C)

(D)

**Answer: (B)**

**Question 55**:

The integrating factor of the differential equation is:

(A)

(B)

(C)

(D)

**Answer: (B)**

**Question 56**:

satisfies which of the following differential equation?

(A)

(B)

(C)

(D)

**Answer: (C)**

**Question 57**:

The solution of the differential equation is:

(A)

(B)

(C)

(D)

**Answer: (B)**

**Question 58**:

The solution of is:

(A)

(B)

(C)

(D)

**Answer: (A)**