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