nursing UP CNET BSc Nursing 2025 Mock Test Series General Science Chemistry Organic Chemistry

N.N-डाइमेथिलएथेनएमीन का निरूपण करने वाली सही संरचना है:

1
2
CH3CH2 - NH - CH2CH3
3
4
CH3-CH2-CH2-CH2-NH2
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