Tag: science & technology

Sabeer Bhatia co-founded Hotmail in 1996 along with Jack Smith. Hotmail was one of the first web-based email services and was later acquired by Microsoft. The other names (Rajat Gupta, Rajeev Gupta, Sabeer Gupta) are not associated with Hotmail's founding.

The structure CH3CH2CH2CH2COOH is a five-carbon straight-chain carboxylic acid, which is named pentanoic acid in IUPAC nomenclature (penta = 5 carbons). Option A 'Valeric acid' is a common name but not IUPAC. Propanoic acid has only 3 carbons, and 'None' is incorrect since pentanoic acid is a valid answer.

Arun Netravalli served as the President of Bell Labs (which was part of Lucent Technologies at the time, and later became part of Alcatel-Lucent after the merger). He was a prominent figure in telecommunications research. The other options are not associated with Bell Labs leadership.

Rajiv Gupta served as General Manager of Hewlett-Packard during his career. He is a notable Indian-American executive in the technology sector. The other options (Sabeer Bhatia, Jeff, Tony Blair) are not associated with HP's GM position.

Victor Menezes was CEO/Chairman of Citibank, Rajat Gupta was Managing Director of McKinsey & Company, and Rana Talwar was CEO of Standard Chartered Bank. These were prominent Indian-origin executives in global financial roles during the 1990s-2000s. Rajiv Gupta (option D) is a different person.

The structure CH3-CH(CH3)-CH2-CH3 is a 4-carbon chain (butane) with a methyl group on carbon 2, making it 2-methylbutane by IUPAC naming. Isopentane (A) is a common name but not IUPAC. Neopentane (C) would be 2,2-dimethylpropane. Pentane (D) has no branching.

C6H5-OH is phenol. The correct IUPAC systematic name is hydroxybenzene, where the -OH substituent is named as 'hydroxy' attached to benzene. 'Phenol' (A) is the accepted common name but not the systematic IUPAC name. 'Benzene alcohol' (C) is incorrect terminology.

CH3-NH2 is methylamine. According to IUPAC substitutive nomenclature, this is named as 'aminomethane' where -NH2 is the amino substituent on methane. 'Methyl amine' (A) is the common name, not systematic. 'Methanenitrogen hydride' (C) and 'Methyl amide' (D) are incorrect naming conventions.