**1271. The set of all inner automorphism of a group G, I(G) is normal subgroup of :**

A. G**B. A(G) ***

C. Z(G)

D. None

**1272. A group G has no proper normal subgroup . Then G is called :**

A. Complete

B. Improper**C. Simple ***

D. None

**1273. If group G is not simple then order of G is :**

A. 35

B. 410

C. 2540 **D. All of these ***

**1274. Which of the following is a ring :**

**A. Z ***

B. Q

C. R

D. All of these

**1275. Which of the following is a smallest ring :**

A. {1}

B. {0}**C. {0,1} ***

D. Z

**1276. A ring without zero divisors is called :**

A. Commutative ring

B. Division ring**C . Integral domain ***

D. Field

**1277. Finite integral domain is :**

A. Division ring

B. Skew field**C. Field ***

D. None

**1278.If a ring R with unity Satisfies the multiplicative property of invers then R is called :**

A. Integral domain**B. Division Ring ***

C. Field

D. Semi-ring

**1279. A commuttive division ring is called :**

A. Integral domain

B. Skew field **C. Field ***

D. None

**1280. Which of the following is not field :**

**A. Z ***

B. Q

C. R

D. C