Saved Bookmarks
This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Alcohol isA. HallucinogensB. TranquilliserC. StimulantD. Depressant |
| Answer» Correct Answer - D | |
| 2. |
Alcohol is absorbed inA. MouthB. Mouth and oesophagusC. Stomach and peroximal intestineD. Throughout alimentary canal. |
| Answer» Correct Answer - C | |
| 3. |
A part of alcohol is excerted throughA. BreathB. UrineC. SweatD. All the above |
| Answer» Correct Answer - D | |
| 4. |
Alcohol is mostly metabolised inA. LiverB. KidneysC. All body cellsD. Riboflavin |
| Answer» Correct Answer - A | |
| 5. |
Alcohol not metabolised is chagned intoA. ButanolB. Butyric acidC. Acetic acidD. Acetaldehyde |
| Answer» Correct Answer - D | |
| 6. |
Percentage of alcohol metabolised in mitochondria isA. `5%`B. `7.5%`C. `10%`D. `15%` |
| Answer» Correct Answer - C | |
| 7. |
Which of the following is needed to maintain the health of nerves, skin and red blood cells?(a) Vitamin B12 (b) Vitamin B6 (c) Vitamin B1 (d) Vitamin C |
|
Answer» (b) Vitamin B6 |
|
| 8. |
Which one of the following play an important role in bioregulation and neurotransmission? (a) Acid derivatives(b) Carbonyl compounds (c) Organic derivatives of ammonia (d) Aromatic hydro carbons |
|
Answer» (c) Organic derivatives of ammonia |
|
| 9. |
CH3CONH2 is a weaker base than CH3CH2NH2 Why? |
|
Answer» Due to resonance, the lone pair of electrons on the nitrogen atom in CH3CONH2 is delocalised over the keto group. There is no such effect ip CH3CH2NH2 . Due to reduction in electron density on N – atom of CH3CONH2 , it is a weaker base than CH3CH2NH2 |
|
| 10. |
Aniline gets coloured on standing in air for a long time. Why? |
|
Answer» Due to strong electron – donating effect (+ R effect) of NH2 group, the electron density on the benzene ring increases. As a result, aniline is easily oxidised on standing in air for a long time to form coloured products. |
|
| 11. |
Primary amines have higher boiling points than tertiary amines why? |
|
Answer» Due to the presence of two H – atom on N – atoms of primary amines they undergo extensive intermolecular H – bonding while tertiary amines due to the absence of a H – atom on the N – atom do not undergo H – bonding. As a result primary amines have higher boiling points than tertiary amines. |
|
| 12. |
Assertion(A): Amines have lower boiling point than alcohols.Reason (R): Nitrogen has lower electronegative value than oxygen and hence the N – H bond is less polar than – OH bond. (a) Both A and R are correct and R is the correct explanation of A (b) Both A and R are correct but R is not the correct explanation of A (c) A is correct but R is wrong (d) A is wrong but R is correct |
|
Answer» (a) Both A and R are correct and R is the correct explanation of A |
|
| 13. |
Which of the following compound is expected to be more basic?(a) Aniline (b) Methylamine (c) Ethylamine (d) Hydroxylamine |
|
Answer» (c) Ethylamine |
|
| 14. |
Nitro group in Nitro benzene is a ……(a) ortho directing group (b) Meta directing group (c) Para directing group (d) ortho and para directing group |
|
Answer» (b) Meta directing group |
|
| 15. |
Primary amines can be distinguished from secondary and tertiary amines by reacting with. (a) CHCI3 and alkali (b) CH3I (c) CHCl3 alone (d) Zn dust |
|
Answer» (a) CHCI3 and alkali |
|
| 16. |
Which of the following amines would undergo diazotisation?(a) CH3NH2 (b) C2H5NH2 (c) C6H5NH2(d) (CH3)2NH |
|
Answer» (c) C6H5NH2 |
|
| 17. |
Replacement of diazonium group by fluorine is known as ……(a) Gattennann reaction (b) Sandmeyer reaction (c) Baltz – Schiemann reaction (d) Comberg reaction |
|
Answer» (c) Baltz – Schiemann reaction |
|
| 18. |
Which one of the following amide will not undergo Hoffmann bromamide reaction? (a) CH3CONH2 (b) CH3CONHCH3 (c) C6H5CONH2 (d) CH3CH2CONH |
|
Answer» (b) CH3CONHCH3 |
|
| 19. |
Which of the following is used in textile industries and also as a solvent in perfume industries? (a) Alkyl cyanide (b) Alkyl iso cyanide (c) Alkyl iso thio cyanate (d) Alkyl amine |
|
Answer» (a) Alkyl cyanide |
|
| 20. |
Which one of the following is known as sweet spirit of nitre? (a) 10 % solution of methyl nitrite (b) 4% solution of ethyl nitrite (c) 10% solution of ethyl nitrite (d) 40% solution of methanal |
|
Answer» (b) 4% solution of ethyl nitrite |
|
| 21. |
Which one of the following reaction is used to identify primary amines?(a) Schotten – Baumann reaction(b) Carbylamine reaction(c) Sand meyer’s reaction(d) Gattermann reaction |
|
Answer» (b) Carbylamine reaction |
|
| 22. |
Chloropicrin is used as …. (a) antiseptic (b) analgesic (c) insecticide (d) fertilizer |
|
Answer» (c) insecticide |
|
| 23. |
Which one of the following is used as an anticancer agent used to stomach and colon cancer? (a) Vitamin C (b) Cobalamine (c) mitomycin C (d) Streptomycin |
|
Answer» (c) mitomycin C |
|
| 24. |
The reaction between methylamine and CS2 is known as ……(a) mustard oil reaction (b) Carbylamine reaction (c) Sand meyer’s reaction (d) Gabriel phthalirnide synthesis |
|
Answer» (a) mustard oil reaction |
|
| 25. |
Which one of the following is used as a fuel additive and precursor to explosive? (a) Nitroglycerine(b) Nitro methane (c) Nitro benzene (d) Nitro ethane |
|
Answer» (d) Nitro ethane |
|
| 26. |
Which one of the following is formed when aniline reacts with CS2 followed by hydrolysis by cone. HCI? (a) Phenyl isocyanide (b) phenyl cyanide (c) Phenvi isothio cyanate (d) Benzene diazonium chloride |
|
Answer» (c) Phenvi isothio cyanate |
|
| 27. |
Aniline reacts with acetaldehyde to form. (a) Schiff’s base (b) carbylamine (c) Imine (d) acetaldoxime |
|
Answer» (a) Schiff’s base |
|
| 28. |
The reducing agent used in mendius reaction is ……(a) H2 /Ni (b) LiAIH4 (c) Na/C2H5OH(d) Sn/HCI |
|
Answer» (c) Na/C2H5OH |
|
| 29. |
Which one of the following is used a fuel for cars?(a) CH3NO2 (b) CH3NH2 (c) CH3N (d) CH3NC |
|
Answer» CH3NO2 is used a fuel for cars. |
|
| 30. |
Identify the product Z in the series of the reaction ……CH3CN + Na +C2H5OH → x + HNO2 → y + K2Cr2O7/H2SO4 → x.(a) CH3CHO (b) CH3CONH2 (c) CH3COOH (d) CH3CH2NHOH |
|
Answer» (c) CH3COOH |
|
| 31. |
Aniline on treatment with excess bromine water gives(a) Anilinium bromide (b) O – bromo aniline (c) 2, 4, 6 – tribromo aniline (d) p – bromo aniline |
|
Answer» (c) 2, 4, 6 – tribromo aniline |
|
| 32. |
Which of the following is not used as an explosive?(a) Trinitro toluene (b) Trinitro benzene (c) Trinitro glycerine (d) Nitro benzene |
|
Answer» (d) Nitro benzene |
|
| 33. |
The product formed when methyl isocyanide is heated to 250°C is ……… (a) Methyl amine (b) Methyl cyanide (c) Ethyl Cyanide (d) Amino ethane |
|
Answer» (b) Methyl cyanide |
|
| 34. |
The product formed when methyl isocyanide is reduced by Na(Hg)/C2H5OH is ……(a) Isopropyl amine(b) Ethanamine(c) N – methyl methanamine (d) N – ethyl methanamine |
|
Answer» (c) N – methyl methanamine |
|
| 35. |
Consider the following statements.(i) Amines have higher boiling point than alcohols.(ii) Lower aliphatic amines are colourless gases whereas higher amines have fish like small.(iii) Aniline and arylamines are colourless but when exposed to air they become coloured due to oxidation. Which of the above statement(s) is / are correct?(a) (i) and (ii) (b) (ii) and (iii) (c) (i) only (d) (iii) only |
|
Answer» (b) (ii) and (iii) |
|
| 36. |
The synthetic material which can be used for marking fabrics as well as shatterproof bottles and jars is: A. nylon B. rayon C. polyester D. acrylic |
|
Answer» C. polyester Polyester is the synthetic fibre which contains the organic group similar-to those which give fruits their sweet smell. PET is a very familiar form of polyester. It is used for making bottles and utensils which is replacing materials like glass. |
|
| 37. |
Which of the following has cross-linked polymer chains? A. bakelite B. polyester C. PVC D. nylon |
|
Answer» A. bakelite Bakelite is a thermosetting plastic which is a poor conductor of heat and electricity. It is used to make electrical switches and handles of utensils. |
|
| 38. |
Name the man-made fibre which is regarded as artificial silk. |
|
Answer» Rayon is the man-made fibre which is regarded as artificial silk. |
|
| 39. |
Which of the following reaction will not give primary amine?(a) CH3CONH2 + Br2/KOH →(b) CH3CN + LiAlH4 →(c) CH3NC + LiAlH4 →(d) CH3CONH2 + LiAlH4 → |
|
Answer» (c) CH3NC + LiAlH4 → |
|
| 40. |
The man-made fibre made from the cellulose polymer is: A. nylon B. acrylic C. rayon D. polyester |
|
Answer» C. rayon Rayon is obtained by the chemical treatment of wood pulp or cellulose. It is the manmade fibre which is regarded as artificial silk. |
|
| 41. |
Name the man-made fibre prepared from natural materials. |
|
Answer» Rayon is the man-made fibre prepared from the natural materials. |
|
| 42. |
Name the units of which cellulose polymer is made. |
|
Answer» Cellulose polymer is made from the repeat units of the monomer glucose. |
|
| 43. |
Which one of the following is needed to maintain the health of nerves and skin?(a) Pyridoxine (b) Cobalamine (c) Dopamine (d) Histamine |
|
Answer» (a) Pyridoxine |
|
| 44. |
Assertion(A): Nitrobenzene undergoes friedel – craft reaction.Reason (R): Nitrobenzene have strong deactivating – NO2 group. (a) Both A and R arc correct but R is not the correct explanation of A (b) Both A and R are correct and R is the correct explanation of A (c) A is wrong but R is correct (d) A is correct but R is wrong |
|
Answer» (c) A is wrong but R is correct |
|
| 45. |
Assertion(A): Amines posses pyramidal geometry.Reason (R): Nitrogen atoms of amines is trivalent and has four sp3 hybridised orbital. Three sp orbitais overlap with orbitais of hydrogen and four sp3 orbitais contain a lone pair of electrons.(a) Both A and R are correct and R is the correct explanation of A (b) Both A and R are correct but R is not the correct explanation of A (c) A is correct but R is wrong. (d) A is wrong but R is correct |
|
Answer» (a) Both A and R are correct and R is the correct explanation of A |
|
| 46. |
A compound that easily undergoes bromination is ……(a) Phenol (b) Toluene (c) Benzene (d) Diethyl ether |
|
Answer» A compound that easily undergoes bromination is Phenol |
|
| 47. |
Azo dyes are prepared from ……(a) Aniline + Phenol (b) Phenol + Phthalic anhydride (c) Phenol + Benzene diazonium chloride (d) Aniline + Phthalic anhydride |
|
Answer» (c) Phenol + Benzene diazonium chloride |
|
| 48. |
Which of the following pair shows functional isomerism?(a) 1 – nitro butane and 2 – nitro butane (b) 1 – nitro butane and butyl nitrite (c) 1 – nitro butane and 2 – methyl – 1 – nitropropane (d) 2 – nitro butane and 2 – methyl – 2 – nitro propane |
|
Answer» (b) 1 – nitro butane and butyl nitrite |
|
| 49. |
1 – nitrobutane and 2 – methyl – 1 – mtropropane are belong to ….(a) position isomerism (b) functional isomerism (c) Tautomerism (d) chain isomerism |
|
Answer» (d) chain isomerism |
|
| 50. |
Which one of the following is most basic? (a) 2, 4 – dichloroaniline (b) 2, 4 – dimethyl aniline (c) 2, 4 – dinitroaniline (d) 2, 4 – dibromoaniline |
|
Answer» (b) 2, 4 – dimethyl aniline CH3 is a +1 group, all other – I group. +1 group increase the electron density on NH2 and hence increases the basic nature. |
|