MCQOPTIONS
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MCQOPTIONS
This section includes 252 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The end product of alcoholic fermentation is |
| A. | pyruvic acid |
| B. | acetaldehyde |
| C. | ethyl alcohol |
| D. | formic acid |
| Answer» D. formic acid | |
| 2. |
The enzymes are killed |
| A. | at a very high temperature |
| B. | during chemical reaction |
| C. | at low temperature |
| D. | under atmospheric pressure |
| Answer» B. during chemical reaction | |
| 3. |
Which has maximum calorific value? |
| A. | Fat |
| B. | Protein |
| C. | Carbohydrate |
| D. | Amino acid |
| Answer» B. Protein | |
| 4. |
In which type of coal percentage of carbon is the highest? |
| A. | Peat |
| B. | Lignite |
| C. | Bituminous |
| D. | Anthracite |
| Answer» E. | |
| 5. |
The gas is commonly used in anaesthesia |
| A. | methane |
| B. | nitrous oxide |
| C. | nitrogen |
| D. | hydrogen peroxide |
| Answer» C. nitrogen | |
| 6. |
Which of the following could act as a propellant for rockets? |
| A. | Liquid oxygen + Liquid argon |
| B. | Liquid hydrogen + Liquid oxygen |
| C. | Liquid nitrogen + Liquid oxygen |
| D. | Liquid hydrogen + Liquid nitrogen |
| Answer» C. Liquid nitrogen + Liquid oxygen | |
| 7. |
Candles contains a mixture of |
| A. | Bees wax and paraffin wax |
| B. | Bees wax and stearic acid |
| C. | Paraffin wax and stearic acid |
| D. | Higher fatty acid |
| Answer» D. Higher fatty acid | |
| 8. |
C11 - L - methyl-methionine is used for |
| A. | brain tumor and parathyroid imaging |
| B. | stomach analysis |
| C. | bone imaging |
| D. | live imaging |
| Answer» B. stomach analysis | |
| 9. |
Petroleum gas is a mixture of ethane, propane and butane. What is its major constituents? |
| A. | Eathane |
| B. | Propane |
| C. | Butane |
| D. | All three are present in equal propertions |
| Answer» D. All three are present in equal propertions | |
| 10. |
Oils are purified by |
| A. | Fractional distillation |
| B. | Steam distillation |
| C. | Crystallisation |
| D. | Vacuum distillation |
| Answer» C. Crystallisation | |
| 11. |
Kerosene is a mixture of |
| A. | aromatic hydrocarbons |
| B. | aliphatic hydrocarbons |
| C. | saturated hydrocarbons |
| D. | alicyclic hydrocarbons |
| Answer» C. saturated hydrocarbons | |
| 12. |
Consider the following statements 1. Liquified Natural Gas (LNG) in liquified under extremely cold temperatures and high pressure to facilitate storage of transporation in specially designed vessels.2. First LNG terminal in India was built in Hassan.3. Natural Gas Liquids (NGL) are separated from LPG and these include ethane, propane, butane and natural gasoline.Which of the statement given above is/are correct ? |
| A. | 1 only |
| B. | 1 and 3 |
| C. | 2 and 3 |
| D. | 1,2, and 3 |
| Answer» C. 2 and 3 | |
| 13. |
A mixture of CS2 and H2S on passing over heated copper gives |
| A. | Methane |
| B. | Ethane |
| C. | Complex mixture |
| D. | Propane |
| Answer» B. Ethane | |
| 14. |
Which one of the following molecule is planar ? |
| A. | NF |
| B. | NCI |
| C. | PH |
| D. | BF |
| Answer» E. | |
| 15. |
Which among the following is the strongest acid ? |
| A. | HOCI |
| B. | HCIO |
| C. | HCIO |
| D. | None of these |
| Answer» E. | |
| 16. |
The fraction obtained between temperature 50-300 C during fractional distillation of crude petroleum is |
| A. | Paraffin wax |
| B. | Heavy oil |
| C. | Kerosene |
| D. | Naphtha |
| Answer» D. Naphtha | |
| 17. |
When formic acid reacts PCI5, it forms |
| A. | Acetyl chloride |
| B. | Formyl chloride |
| C. | Methyl chloride |
| D. | Propionyl chloride |
| Answer» C. Methyl chloride | |
| 18. |
In the complete combustion of CnH2n+2, the number of oxygen moles required is |
| A. | n / 2O |
| B. | (n + 1 / 2)O |
| C. | (3n + 1 / 2)O |
| D. | (n + 2 / 2)O |
| Answer» D. (n + 2 / 2)O | |
| 19. |
Lindlar's catalyst is |
| A. | Pt is ethanol |
| B. | Pd + BaSO |
| C. | Ni in ethnol |
| D. | Na is liquid NH |
| Answer» C. Ni in ethnol | |
| 20. |
The hybridization present in C2H2 is |
| A. | sp |
| B. | sp |
| C. | sp |
| D. | dsp |
| Answer» B. sp | |
| 21. |
Consider the following statements1. It is used in welding industry2. It is raw material for preparing plastics3. It is easily, obtained by mixing silicon carbide and waterOf these statements |
| A. | 1 and 2 are correct |
| B. | 1 and 3 are correct |
| C. | 2 and 3 are correct |
| D. | 1, 2 and 3 are correct |
| Answer» B. 1 and 3 are correct | |
| 22. |
Match List-I with List-II and pick the correct matching form the codes given belowList-I (Haloalkane/arene)List-II (Application)A.Iodofron1.CF4B.BHC2.AntisepticC.Freon - 143.Moth repellentD.Halothanes4.Inhalative anaestheticE.p-Dichlorobenzene5.Termite pesticideCode : |
| A. | A-2, B-4, C-5, D-3, E-1 |
| B. | A-2, B-5, C-1, D-4, E-3 |
| C. | A-3, B-4, C-2, D-1, E-5 |
| D. | A-1, B-3, C-5, D-2, E-4 |
| Answer» C. A-3, B-4, C-2, D-1, E-5 | |
| 23. |
The name CH3 - C N is |
| A. | Methyl nitrile |
| B. | Ethane nitrile |
| C. | Cyno ethane |
| D. | None of these |
| Answer» C. Cyno ethane | |
| 24. |
The hybridization of carbon is benzene is |
| A. | sp |
| B. | sp |
| C. | sp |
| D. | dsp |
| Answer» D. dsp | |
| 25. |
Rectified spirit can be dried with |
| A. | Conc. H |
| B. | SO |
| C. | CaO |
| D. | Anhydrous CaCI |
| E. | Slaked lime |
| Answer» C. CaO | |
| 26. |
Match List-I (Fuel gases) with List-II (Major constituents) and select the correct answers using the codes given below the listList-IList-IIF.CNG1.Carbon monoxide, hydrogenG.Coal gas2.Butane, PropaneH.LPG3.Butane, EthaneJ.Water gas4.Hydrogen, Methane, COCodes :FGHJA.2134B.3421C.2431D.3124 |
| A. | A. |
| B. | B. |
| C. | C. |
| D. | D. |
| Answer» C. C. | |
| 27. |
Assertion (A) : The main constituent of the liquified petroleum gas in methane Reason (R) : Methane can be used directly for burning in homes and factories where it can be supplied through pipelinesCodes |
| A. | Both A and R are true and R is the correct explanation of A |
| B. | Both A and R are true but R is not the correct explanation of A |
| C. | A is true but R is false |
| D. | A is false but R is true |
| Answer» E. | |
| 28. |
IUPAC name of CH2 = CH - CN is |
| A. | Ethenenitrile |
| B. | Vinyl cyanide |
| C. | Cyano ethene |
| D. | Prop - 2 enenitrile |
| Answer» E. | |
| 29. |
The compound, which is used in refrigeration is |
| A. | CH |
| B. | CCI |
| C. | CCI |
| D. | F |
| E. | COCI |
| Answer» D. F | |
| 30. |
The antiseptic action of CHI3 is due to |
| A. | Iodofrom itself |
| B. | Liberation of free iodine |
| C. | Partially due to iodine and partially due to CHI |
| D. | itself |
| E. | None of the above |
| Answer» C. Partially due to iodine and partially due to CHI | |
| 31. |
The vapour density of a volatile substance is 4 (CH4 =1). Its molecular mass would be |
| A. | 2 |
| B. | 8 |
| C. | 64 |
| D. | 128 |
| Answer» E. | |
| 32. |
A hybrid orbital has 25% s-character and 75% p - character. To which type of hybridization it belongs |
| A. | sp |
| B. | sp |
| C. | sp |
| D. | s |
| E. | p |
| Answer» B. sp | |
| 33. |
Assertion (A) : Large cold storage plants use ammonia as refrigerant. While domestic refrigerators use chlorofluorocarbons.Reason (R) : Ammonia can be liquified at ambient temperature and low pressureCodes |
| A. | Both A and R are true and R is the correct explanation of A |
| B. | Both A and R are true but T is not the correct explanation of A |
| C. | A is true but R is false |
| D. | A is false but R is true |
| Answer» B. Both A and R are true but T is not the correct explanation of A | |
| 34. |
Which one of the following can be purified by sublimation ? |
| A. | F |
| B. | CI |
| C. | Br |
| D. | I |
| Answer» E. | |
| 35. |
Liquid benzene (C6H6) burns in oxygen according to, 2C6H6 (l) + 15O2 (g) 12CO (g) + 6H O (g) How many litre of O at STP are needed to complete the combustion of 39 g of liquid benzene ? |
| A. | 11.2 litre |
| B. | 22.4 litre |
| C. | 84 litre |
| D. | 74 litre |
| Answer» D. 74 litre | |
| 36. |
Assertion (A) : Phenyl is used as a household germicide. Reason (R) : Phenyl is phenol derivative and phenol is an effective germicideCodes |
| A. | Both A and R are true and R is the correct explanation of A |
| B. | Both A and R are true but R is not the correct explanation of A |
| C. | A is true but R is false |
| D. | A is false but R is true |
| Answer» B. Both A and R are true but R is not the correct explanation of A | |
| 37. |
What is the name of the following alkyl group ? (CH3)2 CH |
| A. | Normal propyl |
| B. | Isopropyl |
| C. | Sec. propyl |
| D. | Tert. propyl |
| Answer» C. Sec. propyl | |
| 38. |
Match List - I (Industrial process) with List - II (Industry with which associated) and select the correct answer using the code given below the listsList-IList-IIF.Cracking1.RubberG.Smelting2.PetroleumH.Hydrogenation3.CopperJ.Vulcanization4.Edible fatsCodeFGHJA.3214B.2341C.2314D.3241 |
| A. | A. |
| B. | B. |
| C. | C. |
| D. | D. |
| Answer» C. C. | |
| 39. |
Glucose and fructose are converted into C2H5OH in presence of |
| A. | Invertase |
| B. | Diastase |
| C. | Zymase |
| D. | Lipids |
| Answer» D. Lipids | |
| 40. |
IUPAC name of CH3CHO is |
| A. | Acetaldehyde |
| B. | Ethanal |
| C. | Methyl aldehyde |
| D. | Formalin |
| Answer» C. Methyl aldehyde | |
| 41. |
General formula CnH2n-2 represents |
| A. | Alkenes |
| B. | Alkanes |
| C. | Alkynes |
| D. | None |
| Answer» D. None | |
| 42. |
Which is the correct formula of bleaching powder ? |
| A. | Ca(OCI)CI |
| B. | CaO(OCI) |
| C. | Ca(OCI) |
| D. | Ca(OCI) |
| E. | CI |
| Answer» B. CaO(OCI) | |
| 43. |
The compound CH3COOC2H5 belongs to the class |
| A. | Alkanals |
| B. | Alkanones |
| C. | Alkyle alkanoates |
| D. | Alkanediols |
| Answer» D. Alkanediols | |
| 44. |
Nitrogen containing organic compound when fused with sodium metal forms |
| A. | NaNO |
| B. | NaCN |
| C. | NaNH |
| D. | NaNC |
| Answer» C. NaNH | |
| 45. |
Successive alkens differ by |
| A. | CH |
| B. | CH |
| C. | CH |
| D. | C |
| E. | H |
| Answer» B. CH | |
| 46. |
Petroleum is found |
| A. | On the surface of the earth |
| B. | In the atmosphere |
| C. | In arctic ocean |
| D. | Deep under the surface of the earth |
| Answer» E. | |
| 47. |
Benzene is a polymer of |
| A. | Methane |
| B. | Acetylene |
| C. | Ethane |
| D. | Ethylene |
| Answer» C. Ethane | |
| 48. |
Naphthalene is a volatile solid it is best purified by |
| A. | Crystallisation |
| B. | Distillation |
| C. | Steam distillation |
| D. | Sublimation |
| Answer» E. | |
| 49. |
A mixture of CS |
| A. | Methane |
| B. | Ethane |
| C. | Complex mixture |
| D. | Propane |
| Answer» B. Ethane | |
| 50. |
The couple between base units of DNA is through |
| A. | Hydrogen bonding |
| B. | Electrostatic bonding |
| C. | Covalent bonding |
| D. | van der Waal's forces |
| Answer» B. Electrostatic bonding | |