MCQOPTIONS
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MCQOPTIONS
This section includes 36 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Oleic, stearic and palmitic acids are [Pb. CET 2002] |
| A. | Fatty acid |
| B. | Amino acid |
| C. | Nucleic acid |
| D. | Essential acid |
| Answer» B. Amino acid | |
| 2. |
The alcohol obtained by the hydrolysis of oils and fats is [KCET 2001] |
| A. | Glycol |
| B. | Glycerol |
| C. | Propanol |
| D. | Pentanol |
| Answer» C. Propanol | |
| 3. |
The waxes are long chain compounds of fatty acids, which belong to the class of [BHU 1999; AFMC 2005] |
| A. | Esters |
| B. | Ethers |
| C. | Alcohols |
| D. | Acetic acid |
| Answer» B. Ethers | |
| 4. |
The energy change produced by the combustion of food is called the 'calorific value'. The highest calorific value is given by [NCERT 1984; AFMC 1988] |
| A. | Proteins |
| B. | Fats |
| C. | Carbohydrates |
| D. | Vitamins |
| Answer» C. Carbohydrates | |
| 5. |
Insulin is a protein which plays the role of [KCET 1986] |
| A. | An antibody |
| B. | A harmone |
| C. | An enzyme |
| D. | A transport agent |
| Answer» C. An enzyme | |
| 6. |
DNA multiplication is called [Kerala (Med.) 2000] |
| A. | Translation |
| B. | Transduction |
| C. | Transcription |
| D. | Replication |
| Answer» E. | |
| 7. |
Chargaff's rule states that in an organism[CBSE PMT 2003] |
| A. | Amounts of all bases are equal |
| B. | Amount of adenine A is equal to that of thymine T and the amount of guanine G is equal to that of cytosine C |
| C. | Amount of adenine A is equal to that of guanine G and the amount of thymine T is equal to that of cytosine C |
| D. | Amount of adenine A is equal to that of cytosine C and the amount of thymine T is equal to guanine G |
| Answer» C. Amount of adenine A is equal to that of guanine G and the amount of thymine T is equal to that of cytosine C | |
| 8. |
The nucleic acid base having two possible binding sites is [AIIMS 2004] |
| A. | Thymine |
| B. | Cytosine |
| C. | Guanine |
| D. | Adenine |
| Answer» D. Adenine | |
| 9. |
Number of chiral carbons in \[\beta -D-(+)\]-glucose is [CBSE PMT 2004; MHCET 2004] |
| A. | Three |
| B. | Four |
| C. | Five |
| D. | Six |
| Answer» C. Five | |
| 10. |
Starch is converted into maltose by the [DPMT 1979; CPMT 1982; BHU 1999] |
| A. | Maltase |
| B. | Invertase |
| C. | Zymase |
| D. | Diastase |
| Answer» E. | |
| 11. |
Which of the following does not show any reducing test of aldehyde[CPMT 1996; Orissa JEE 2004] |
| A. | Sucrose |
| B. | Fructose |
| C. | Maltose |
| D. | Lactose |
| Answer» B. Fructose | |
| 12. |
Which of the following pentoses will be optically active \[\begin{matrix} CHO\\ |\\ HCOH\\ |\\ HOCH\\ |\\ HCOH\\ |\\ C{{H}_{2}}OH\\ I\\ \end{matrix}\]\[\begin{matrix} CHO\\ |\\ HCOH\\ |\\ HCOH\\ |\\ HOCH\\ |\\ C{{H}_{2}}OH\\ II\\ \end{matrix}\]\[\begin{matrix} CHO\\ |\\ HCOH\\ |\\ HCOH\\ |\\ HCOH\\ |\\ C{{H}_{2}}OH\\ III\\ \end{matrix}\] [MP PET 1994] |
| A. | All |
| B. | II and III |
| C. | I |
| D. | II |
| Answer» B. II and III | |
| 13. |
Lactose on hydrolysis gives [KCET 1983] |
| A. | Two glucose molecules |
| B. | Two galactose molecules |
| C. | A galactose molecule and a fructose molecule |
| D. | A galactose molecule and a glucose molecule |
| Answer» E. | |
| 14. |
Carbohydrates are stored in human body as [MP PMT 1999; Kerala PMT 2004] |
| A. | Glucose |
| B. | Glycogen |
| C. | Starch |
| D. | Fructose |
| Answer» C. Starch | |
| 15. |
Benedict solution provides [CPMT 1983] |
| A. | \[A{{g}^{+}}\] |
| B. | \[L{{i}^{+}}\] |
| C. | \[C{{u}^{+2}}\] |
| D. | \[B{{a}^{+2}}\] |
| Answer» D. \[B{{a}^{+2}}\] | |
| 16. |
Sucrose is |
| A. | A reducing sugar |
| B. | Not a reducing sugar |
| C. | Partial reducing sugar |
| D. | Mixed sugar |
| Answer» C. Partial reducing sugar | |
| 17. |
Sugar can be tested in urine by |
| A. | Molisch test |
| B. | Dunstan's test |
| C. | Benedict's test |
| D. | Legal's test |
| Answer» D. Legal's test | |
| 18. |
Which is monosaccharide |
| A. | Glucose |
| B. | Fructose |
| C. | Galactose |
| D. | All of these |
| Answer» E. | |
| 19. |
The letter ?D? in carbohydrates represents |
| A. | Its direct synthesis |
| B. | Its dextrorotation |
| C. | Its mutarotation |
| D. | Its configuration |
| Answer» E. | |
| 20. |
Molecular formula of pentahydroxy acid obtained when glucose is oxidised with \[B{{r}_{2}}\] water is |
| A. | \[{{C}_{6}}{{H}_{12}}{{O}_{7}}\] |
| B. | \[{{C}_{6}}{{H}_{12}}{{O}_{8}}\] |
| C. | \[{{C}_{6}}{{H}_{12}}{{O}_{6}}\] |
| D. | \[{{C}_{6}}{{H}_{10}}{{O}_{6}}\] |
| Answer» B. \[{{C}_{6}}{{H}_{12}}{{O}_{8}}\] | |
| 21. |
Gun-cotton is |
| A. | Nitrosucrose |
| B. | Nitrocellulose |
| C. | Nitroglucose |
| D. | Nitropicrin |
| Answer» C. Nitroglucose | |
| 22. |
Which of the following sign indicate that the sugar is actually ?dextrorotatory? |
| A. | ? |
| B. | + |
| C. | R ? |
| D. | All of these |
| Answer» C. R ? | |
| 23. |
Molecular formula \[{{C}_{6}}{{H}_{12}}{{O}_{6}}\] is of |
| A. | Glucose |
| B. | Fructose |
| C. | Both A and B |
| D. | None of these |
| Answer» D. None of these | |
| 24. |
Oxidation of glucose is one of the most important reactions in a living cell. What is the number of ATP molecules generated in cells from one molecule of glucose [CBSE PMT 1995] |
| A. | 38 |
| B. | 12 |
| C. | 18 |
| D. | 28 |
| Answer» B. 12 | |
| 25. |
Which among the following is the simplest sugar [Pb. CET 2002] |
| A. | Glucose |
| B. | Cellulose |
| C. | Starch |
| D. | Glycogen |
| Answer» B. Cellulose | |
| 26. |
To detect the reducing and non reducing sugars, which of the following test is used [MH CET 2002] |
| A. | Molisch test |
| B. | Biuret test |
| C. | Fehling's test |
| D. | Millions test |
| Answer» D. Millions test | |
| 27. |
Which of the following is correct statement [CBSE PMT 2001] |
| A. | Troleins are amino acid |
| B. | a-hydrogen is present in fructose |
| C. | Starch is polymer of a-glucose |
| D. | Amylose is compound of cellulose |
| Answer» D. Amylose is compound of cellulose | |
| 28. |
An invert sugar is [AFMC 2000] |
| A. | Isorotatory |
| B. | Dextrorotatory |
| C. | Laevorotatory |
| D. | Optically inactive |
| Answer» D. Optically inactive | |
| 29. |
In polysaccharides the linkage connecting monosaccharide units is called[MP PMT 2000] |
| A. | Glycoside linkage |
| B. | Nucleoside linkage |
| C. | Glycogen linkage |
| D. | Peptide linkage |
| Answer» B. Nucleoside linkage | |
| 30. |
Cellulose are polymers of |
| A. | Disaccharides of glucose |
| B. | Polysaccharides of glucose |
| C. | Disaccharides of microfibrils |
| D. | Polysaccharides of microfibrils |
| Answer» C. Disaccharides of microfibrils | |
| 31. |
Maltose consists of which one of the following [Manipal 2005] |
| A. | \[\beta -\]glucose and \[\beta -\]galactose |
| B. | \[\alpha -\]glucose and \[\alpha -\]fructose |
| C. | \[\alpha -\]sucrose nad \[\beta -\]glucose |
| D. | Glucose and glucose |
| Answer» E. | |
| 32. |
Inspite of gaining complete glucose, plants stores fructose in ripening fruits because in comparison of glucose, fructose is [AMU 2005] |
| A. | More sweet |
| B. | Release more energy at the time of oxidation |
| C. | More stable for oxidation |
| D. | Occupy less space |
| Answer» B. Release more energy at the time of oxidation | |
| 33. |
High content of lysine is present in [MHCET 2003] |
| A. | Wheat |
| B. | Apple |
| C. | Maize |
| D. | Banana |
| Answer» B. Apple | |
| 34. |
No cell could live without [MP PMT 1997] |
| A. | Phytochrome |
| B. | Enzymes |
| C. | Chloroplasts |
| D. | Protein |
| Answer» E. | |
| 35. |
Which is non-reducing sugar [Orissa JEE 2004; Bihar 2005] |
| A. | Glucose |
| B. | Galactose |
| C. | Mannose |
| D. | Sucrose |
| Answer» E. | |
| 36. |
Starch and cellulose are the compounds made up of many units of [CPMT 1988, 89, 93] |
| A. | Simple sugar |
| B. | Fatty acid |
| C. | Glycerol |
| D. | Amino acid |
| Answer» B. Fatty acid | |