# NCERT Class 12-Math's: Chapter –9 Differential Equations Part 14

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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)**