61.

Which one of the following types of drugs reduces fever?

• Analgesic

• Antipyretic

• Antibiotic

• Antibiotic

2 methylbutane on reacting with bromine in the presence of sunlight gives mainly

• 1 – bromo -2 - methylbutane

• 2 – bromo -2 - methylbutane

• 2 – bromo -3 - methylbutane

• 2 – bromo -3 - methylbutane

The best reagent to convert pent -3- en-2-ol into pent -3-en-2-one is

• Acidic permanganate

• Acidic dichromate

• Chromic anhydride in glacial acetic acid

• Chromic anhydride in glacial acetic acid

Tertiary alkyl halides are practically inert to substitution by S_N2 mechanism because of

• insolubility

• instability

• inductive effect

• inductive effect

In both DNA and RNA, heterocyclic base and phosphate ester linkages are at

•  respectively of the sugar molecule
•  respectively of the sugar molecule
• 
• 

Reaction of one molecule of HBr with one molecule of 1,3-butadiene at 400 C gives predominantly

• 3-bromobutene under kinetically controlled conditions

• 1-bromo-2-butene under thermodymically controlled conditions

• 3-bromobutene under thermodynamically controlled conditions

• 3-bromobutene under thermodynamically controlled conditions

Which one of the following methods is neither meant for the synthesis nor for separation of amines?

• Hinsberg method

• Hofmann method

• Wurtz reaction

• Wurtz reaction

Which of the following is fully fluorinated polymer?

• Neoprene

• Teflon

• Thiokol

• Thiokol

Alkyl halides react with dialkyl copper reagents to give

• alkenes

• alkyl copper halides

• alkanes

• alkanes

Acid catalyzed hydration of alkenes except ethene leads to the formation of

• primary alcohol

• secondary or tertiary alcohol

• mixture of primary and secondary alcohols

• mixture of primary and secondary alcohols