The first organic compound was synthesized in laboratory by:A.Wohler.B.Kolbe.C.Berzelius.D.Neil Bartlett.

The first organic compound synthesized in a laboratory is credited to Friedrich Wöhler, making the correct answer A. Wöhler. Here's a brief explanation:

Background:
Friedrich Wöhler synthesized urea in 1828 from ammonium cyanate. This synthesis was significant because it was the first time an organic compound was created from inorganic precursors, challenging the then-prevailing belief that organic compounds could only be produced by living organisms (a concept known as vitalism).
Explanation of Other Options:
B. Kolbe: This refers to Hermann Kolbe, who is known for his work on the synthesis of organic compounds through electrochemical methods, but he did not synthesize the first organic compound.

C. Berzelius: Jöns Jacob Berzelius was a prominent chemist who made significant contributions to chemical notation and the understanding of organic compounds, but he did not synthesize the first organic compound.

D. Neil Bartlett: Neil Bartlett is known for his work on noble gases and the synthesis of the first noble gas compound (xenon hexafluoroplatinate), but this is not related to the first organic compound.

Conclusion:
Wöhler's synthesis of urea was a pivotal moment in organic chemistry, marking the transition from organic chemistry being seen as separate from inorganic chemistry to the understanding that both types of compounds could be related through chemical reactions.