Free Test Cyanides – NEET

Q1: What is the general formula of alkyl cyanide?

A. R-CN B. R-NC C. R-C≡CH D. R-COOH

Q2: Which hybridization is found in the carbon atom of –CN group in alkyl cyanide?

A. sp B. sp2 C. sp3 D. none

Q3: Alkyl cyanides on hydrolysis give:

A. Primary amines B. Carboxylic acids C. Ketones D. Aldehydes

Q4: Which of the following is isomeric with methyl isocyanide?

A. Ethyl amine B. Methyl cyanide C. Acetic acid D. Methanol

Q5: Methyl isocyanide is also known as:

A. Methanamide B. Isomethanamine C. Isocyanomethane D. Methanimine

Q6: Which reagent is used to convert cyanide to amine?

A. NaOH B. H2/Ni C. KMnO4 D. Na2Cr2O7

Q7: Which of the following is most toxic?

A. Acetonitrile B. Ethyl cyanide C. Potassium cyanide D. Isopropyl alcohol

Q8: Which compound gives cyanide ion in aqueous solution?

A. CH3CN B. KCN C. CH3NC D. C6H5CN

Q9: Which of the following does not undergo hydrolysis to give carboxylic acid?

A. CH3CN B. C2H5CN C. CH3NC D. PhCN

Q10: The IUPAC name of CH3CN is:

A. Methyl cyanide B. Ethanenitrile C. Acetonitrile D. Formonitrile

Q11: Cyanides can be prepared by the reaction of alkyl halides with:

A. KCN in ethanol B. NaOH in water C. HCl and Zn D. Alcoholic ammonia

Q12: Which of the following is an example of functional isomerism?

A. CH3CN and CH3CH2OH B. CH3CN and CH3NC C. CH3CN and CH4 D. CH3CH2OH and CH3CH2Cl

Q13: What is formed when methyl cyanide is hydrolyzed under acidic conditions?

A. Methanol B. Methanamine C. Ethanoic acid D. Formic acid

Q14: What happens to the boiling point when –CN group is added to an alkane?

A. Decreases B. Increases C. Remains same D. Becomes zero

Q15: Which of the following will not form cyanide?

A. CH3Br + KCN B. C2H5Cl + KCN C. C6H5Cl + KCN D. CH3CH2Br + NaCN

Q16: Which of the following is not a correct use of cyanides?

A. Electroplating B. Gold extraction C. Poison D. Antiseptic

Q17: Which test is used to detect cyanide ions?

A. Tollens test B. Prussian blue test C. Fehling’s test D. Benedict’s test

Q18: What is the shape of the –C≡N group in alkyl cyanide?

A. Linear B. Bent C. Trigonal planar D. Tetrahedral

Q19: Which of the following is not a property of cyanides?

A. High toxicity B. Strong odor C. Weak nucleophilicity D. Polar compound

Q20: What is the oxidation state of carbon in cyanide ion?

A. +2 B. +4 C. +1 D. +3

Quiz for Cyanides