MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 837 Mcqs, each offering curated multiple-choice questions to sharpen your Grade10 knowledge and support exam preparation. Choose a topic below to get started.
| 301. |
A fat-soluble vitamin Dissolves in |
| A. | fat |
| B. | water |
| C. | ethers |
| D. | phenols |
| Answer» B. water | |
| 302. |
Which of the following is true about polysaccharides? |
| A. | they are white crystalline solids |
| B. | they have sweet taste |
| C. | they are soluble in water |
| D. | they are non-reducing in nature |
| Answer» E. | |
| 303. |
The nuclei of cells consist of |
| A. | proteins |
| B. | carbohydrates |
| C. | nucleic acids |
| D. | vitamins |
| Answer» D. vitamins | |
| 304. |
Which of the following is contained by the fatty acid composition of vegetable oil? |
| A. | carbon-carbon single bonds |
| B. | carbon-carbon double bonds |
| C. | carbon-carbon triple bonds |
| D. | carbon-carbon quad bond |
| Answer» C. carbon-carbon triple bonds | |
| 305. |
Vitamin K is soluble in |
| A. | fat |
| B. | water |
| C. | ethers |
| D. | phenols |
| Answer» B. water | |
| 306. |
Which of the following absorbs and carries away toxic chemicals in food that would otherwise harm us? |
| A. | vitamins |
| B. | fiber |
| C. | proteins |
| D. | lipids |
| Answer» C. proteins | |
| 307. |
RNA (Ribonucleic Acid) exists in the form of |
| A. | solid |
| B. | gas |
| C. | double strand |
| D. | single strand |
| Answer» E. | |
| 308. |
Which of the following is true about RNA? |
| A. | it is synthesized by DNA |
| B. | it has deoxyribose sugar |
| C. | it has double strand |
| D. | it has double helix |
| Answer» B. it has deoxyribose sugar | |
| 309. |
The resulting molecule after joining two amino acid units is called a/an |
| A. | amino group |
| B. | carboxyl group |
| C. | peptide bond |
| D. | dipeptide |
| Answer» E. | |
| 310. |
Which of the following keeps the cornea moist? |
| A. | vitamin A |
| B. | vitamin B |
| C. | vitamin C |
| D. | vitamin D |
| Answer» B. vitamin B | |
| 311. |
Which of the following is not true about polysaccharides? |
| A. | they are amorphous solids |
| B. | they are tasteless |
| C. | they are insoluble in water |
| D. | they are reducing in nature |
| Answer» E. | |
| 312. |
Which of the following is added to fruit juices and flavored drinks to prevent scurvy and elimination of rickets? |
| A. | vitamin A |
| B. | vitamin B |
| C. | vitamin C |
| D. | vitamin D |
| Answer» D. vitamin D | |
| 313. |
If a lipid is liquefied at room temperature, it is called |
| A. | fat |
| B. | oil |
| C. | proteins |
| D. | ghee |
| Answer» C. proteins | |
| 314. |
Which of the following is used as a fuel for jet planes? |
| A. | Liquefied petroleum gas (LPG) |
| B. | petrol |
| C. | naphtha |
| D. | kerosene |
| Answer» E. | |
| 315. |
The fifth step of the Solvay process is |
| A. | preparation of ammonical brine |
| B. | carbonation |
| C. | preparation of carbon dioxide and slaked lime |
| D. | recovery of ammonia |
| Answer» D. recovery of ammonia | |
| 316. |
The first step of the Solvay process is |
| A. | preparation of ammonical brine |
| B. | carbonation |
| C. | filtration |
| D. | calcination |
| Answer» B. carbonation | |
| 317. |
The second step of the Solvay process is |
| A. | preparation of ammonical brine |
| B. | carbonation |
| C. | filtration |
| D. | calcination |
| Answer» C. filtration | |
| 318. |
The color of crude oil is |
| A. | brownish black |
| B. | white |
| C. | transparent |
| D. | light yellow |
| Answer» B. white | |
| 319. |
What are the organic compounds called that have two alkyl groups attached to the same oxygen atom? |
| A. | halo alkanes |
| B. | phenols |
| C. | ethers |
| D. | alcohols |
| Answer» D. alcohols | |
| 320. |
Considering ethanol, how many carbon atoms is the oxygen atom bonded to? |
| A. | one |
| B. | two |
| C. | three |
| D. | four |
| Answer» B. two | |
| 321. |
The hydrocarbon which contains one or more carbon-carbon triple bond is |
| A. | alkane |
| B. | alkene |
| C. | alkyne |
| D. | aldehyde |
| Answer» D. aldehyde | |
| 322. |
Which of the following helps to ensure antiseptic conditions in hospital operating rooms? |
| A. | ethylene |
| B. | acetylene |
| C. | phenol |
| D. | methanol |
| Answer» D. methanol | |
| 323. |
Which of the following is used as a solvent for fats, oils, paints, and varnishes? |
| A. | ethylene |
| B. | acetylene |
| C. | phenol |
| D. | methanol |
| Answer» E. | |
| 324. |
What is the pH of lemon juice? |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» D. 3 | |
| 325. |
Considering the methods for making salt, the reaction of acid and metal oxide gives |
| A. | salt and water |
| B. | salt and hydrogen |
| C. | salt, carbon dioxide and water |
| D. | salt and salt |
| Answer» B. salt and hydrogen | |
| 326. |
Which of the following increases when pH is less than 7? |
| A. | [H+] |
| B. | [OH-] |
| C. | [OH+] |
| D. | [O-] |
| Answer» B. [OH-] | |
| 327. |
A base is a substance that ionizes in water to produce |
| A. | H+ ions |
| B. | OH- ions |
| C. | O2 |
| D. | H2 |
| Answer» C. O2 | |
| 328. |
Which of the following is used to crave patterns during etching? |
| A. | acid |
| B. | base |
| C. | dye |
| D. | water |
| Answer» B. base | |
| 329. |
When methane and chlorine are reacted in direct sunlight, the reaction is |
| A. | normal |
| B. | explosive |
| C. | faster |
| D. | cheaper |
| Answer» C. faster | |
| 330. |
Methane is reacted with chlorine in |
| A. | direct sunlight |
| B. | darkness |
| C. | diffused sunlight |
| D. | any environment |
| Answer» D. any environment | |
| 331. |
Tetrahydroxy ethane loses two water molecules to form |
| A. | oxalic acid |
| B. | Glyoxal |
| C. | acetylene |
| D. | ethylene glycol |
| Answer» C. acetylene | |
| 332. |
What is the physical state of bromine when reacted with an alkene? |
| A. | solid |
| B. | liquid |
| C. | gas |
| D. | plasma |
| Answer» C. gas | |
| 333. |
Methane (CH4) is used as |
| A. | domestic fuel |
| B. | automobile fuel |
| C. | urea manufacture |
| D. | all of above |
| Answer» E. | |
| 334. |
What is the state of Trichloromethane at room temperature? |
| A. | solid |
| B. | liquid |
| C. | gas |
| D. | plasma |
| Answer» C. gas | |
| 335. |
Considering the process of reduction of alkyl halides, which of the following is liberated when Zn reacts with aqueous acid? |
| A. | hydrogen gas |
| B. | nascent hydrogen |
| C. | oxygen |
| D. | carbon atoms |
| Answer» C. oxygen | |
| 336. |
A solid deposit containing a sufficiently high percentage of a mineral to make extraction of metal economically feasible is called |
| A. | metal oxide |
| B. | gangue |
| C. | ore |
| D. | none of above |
| Answer» D. none of above | |
| 337. |
The process of converting minerals into oxides is called |
| A. | smelting |
| B. | reigning |
| C. | roasting |
| D. | Bessemerization |
| Answer» D. Bessemerization | |
| 338. |
Number of carbon atoms per molecule in fuel oil is |
| A. | 14 to 20 |
| B. | 20 to 50 |
| C. | 50 to 70 |
| D. | 70 to 90 |
| Answer» D. 70 to 90 | |
| 339. |
Ore of copper is called |
| A. | hematite |
| B. | chalcopyrite |
| C. | bauxite |
| D. | halite |
| Answer» C. bauxite | |
| 340. |
Ore of mercury is called |
| A. | galena |
| B. | zinc blende |
| C. | cinnabar |
| D. | chromite |
| Answer» D. chromite | |
| 341. |
Which of the following has two halogen atoms on adjacent carbon atoms? |
| A. | vicinal dihalide |
| B. | Tetrahalide |
| C. | acetylene |
| D. | Trichloromethane |
| Answer» B. Tetrahalide | |
| 342. |
Which color of KMnO4 solution is discharged when an alkene is treated with a dilute alkaline aqueous solution of KMnO4? |
| A. | red |
| B. | brown |
| C. | orange |
| D. | pink |
| Answer» E. | |
| 343. |
Which of the following has carcinogenic effects at high concentrations? |
| A. | tetra chloromethane |
| B. | dichloromethane |
| C. | methyl chloride |
| D. | Trichloromethane |
| Answer» B. dichloromethane | |
| 344. |
Which of the following is true about alkanes? |
| A. | they are insoluble in water |
| B. | they are more dense than water |
| C. | they are essentially polar |
| D. | they are reactive towards most ionic compounds |
| Answer» B. they are more dense than water | |
| 345. |
Tetra halides undergo dehalogenation forming an alkyne on treatment with |
| A. | calcium hydroxide |
| B. | alcoholic potassium hydroxide |
| C. | sodium hydroxide |
| D. | Zn dust |
| Answer» E. | |
| 346. |
Test for the presence of an alkene is called |
| A. | iodine test |
| B. | benedict's test |
| C. | Baeyer's test |
| D. | Kolbe's electrolytic method |
| Answer» D. Kolbe's electrolytic method | |
| 347. |
Which of the following helps to initiate the ripening of fruits and vegetables? |
| A. | ethane |
| B. | ethene |
| C. | Ethyne |
| D. | methane |
| Answer» C. Ethyne | |
| 348. |
Which of the following is true about alkynes? |
| A. | they are polar |
| B. | they do not dissolve in organic solvents |
| C. | they are saturated hydrocarbons |
| D. | they are non-polar |
| Answer» E. | |
| 349. |
What is formed when methane is reacted with chlorine in direct sunlight? |
| A. | carbon and HCl |
| B. | carbon tetrachloride and HCl |
| C. | chloromethane |
| D. | dichloromethane |
| Answer» B. carbon tetrachloride and HCl | |
| 350. |
The molecular formula of methane is |
| A. | CH4 |
| B. | C2H6 |
| C. | C3H8 |
| D. | C4H10 |
| Answer» B. C2H6 | |