1
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

Maximum number of molecules of CH$$_3$$I that can react with a molecule of CH$$_3$$NH$$_2$$ are

A
1
B
2
C
4
D
3
2
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0
$${7^{2{{\log }_7}5}}$$ is equal to
A
5
B
$${\log _7}35$$
C
$${\log _7}25$$
D
25
3
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

In the group $$(G\,{ \otimes _{15}})$$, where $$G = \{ 3,6,9,12\} $$, $${ \otimes _{15}}$$ is multiplication modulo 15, the identity element is

A
6
B
3
C
9
D
12
4
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

A group (G *) has 10 elements. The minimum number of elements of G, which are their own inverses is

A
1
B
2
C
0
D
9
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