**1281. Let x be a ring much that all the subring of X are also ideal of X. Then X is :**

**A. Z ***

B. Q

C. C

D. R

**1282. A field without a proper subfield is called :**

**A. Prime field ***

B. Simple field

C. Quotient field

D. None

**1283. Which of the following is a prime field :**

**A. Z ***

B. Q

C. C

D. R

**1284. LeT X be a vector space over itself then X is :**

A. Group

B. Ring

C. Integral domain**D. Field ***

**1285. Which of the following is a vector space over Q :**

A. Z**B. Q ***

C. C

D. None

**1286. Which of the folowing is a subspace of R over Q :**

A. Z**B. Q ***

C. C

D. None

**1287. Let V be a vector space . Then Which of the following is a subspace of V :**

**A. {0} ***

B. {1}

C. {0,1}

D. None

**1288. The dimension of a vector space is number of elements in its :**

A. Subspace**B. Base ***

C. Centre

D. Field

**1289. Every finite ****dimensional**** vector space has a :**

A. Spanning set of vectors

B. Set of linearly independent vectors

C. Base **D. All of these ***

**1290. Which of the following is a linear transformation:**

A. Zero Transformation

B. Identity transformation

C. Differential transformation**D. All of these ***