41.

Which of the following compounds cannot be identified by carbylamine test?

• CHCl₃

• C₆H₅-NH-C₆H₅

• C₆H₅NH₂

• CH₃CH₂NH₂

The hard plastic covers of telephones are made from polymers of

• acrylonitrile

• styrene

• fluoromethane

• phenol and formaldehyde

Which one of the following monomers gives the polymer neoprene on polymerisation?

• CH₂=CH-Cl

• CCl₂=CCl₂

• CH₂=CCl-CH=CH₂

• CF₂=CF₂

The coiled form of a fibrous protein is known as

• α- and β- form

• β- form

• globular protein

• α-form

During the process of digestion, the proteins present in food materials are hydrolysed to amino acids.

Proteins $\stackrel{\mathrm{Enzyme} \left(\mathrm{A}\right)}{\to } \mathrm{Polypeptides} \stackrel{\mathrm{Enzyme}\left(\mathrm{B}\right)}{\to } \mathrm{Amino} \mathrm{acids}$

The two enzymes A and B involved in the process are respectively

• amylase and maltase

• diastase and lipase

• pepsin and trypsin

• Invertase and zymase

In the following reaction,

$C_6{\mathrm{H}}_5{\mathrm{NO}}_2 \stackrel{\mathrm{Sn}/\mathrm{HCl}}{\to } \mathrm{X} \stackrel{{\mathrm{C}}_6{\mathrm{H}}_5\mathrm{COCl}}{\to } \mathrm{Y} + \mathrm{HCl}$

the product Y is

• azobenzene

• acetanilide

• benzanilide

• hydrazobenzene

$({\mathrm{CH}}_3{)}_2\mathrm{CO} \underset{\mathrm{HCl}}{\overset{\mathrm{NaCN}}{\to }} \mathrm{A} \stackrel{{\mathrm{H}}_3{\mathrm{O}}^{+}}{\to } \mathrm{B}$. In the above sequence of reactions, A and B respectively are

• (CH₃)₂C(OH)CN, (CH₃)₂CHCOOH

• (CH₃)₂C(OH)CN, (CH₃)₂C(OH)₂

• (CH₃)₂C(OH)CN,(CH₃)₂C(OH)COOH

• (CH₃)₂C(OH)CN,(CH₃)₂C=O

Which among the following is not an antibiotic?

• Erythromycin

• Oxytocin

• Penicillin

• Tetracycline

Which ofthe following is a nacrotic analgesic?

• Paracetamol

• Aspirin

• Morphine

• None of the above

Which is incorrectly matched?

• Golden spangles . PbCrO₄

• Cu₂S + FeS: Matte

• ZnO : Pompholyx

• 10 vol H₂O₂ : 3.035%