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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.
| 351. |
Crude oil is converted into useful products by |
| A. | drilling |
| B. | Solvay process |
| C. | roasting |
| D. | refining |
| Answer» E. | |
| 352. |
Number of carbon atoms per molecule in lubricating oil is |
| A. | 14 to 20 |
| B. | 20 to 50 |
| C. | 50 to 70 |
| D. | more than 70 |
| Answer» C. 50 to 70 | |
| 353. |
The boiling point of fuel oil is |
| A. | 270 °C to 340 °C |
| B. | 350 °C to 500 °C |
| C. | 500 °C to 600 °C |
| D. | more than 500 °C |
| Answer» D. more than 500 °C | |
| 354. |
Process in which some minerals are converted to the oxide by heating in the air at a temperature below their melting point is called |
| A. | roasting |
| B. | smelting |
| C. | Bessemerization |
| D. | concentration |
| Answer» B. smelting | |
| 355. |
The boiling point of lubricating oil is |
| A. | 270 °C to 340 °C |
| B. | 350 °C to 500 °C |
| C. | 500 °C to 600 °C |
| D. | more than 500 °C |
| Answer» C. 500 °C to 600 °C | |
| 356. |
How does chlorine react? |
| A. | explosively |
| B. | slowly in dark but rapidly in strong sunlight |
| C. | requires high temperature or strong sun light |
| D. | essentially unreactive |
| Answer» C. requires high temperature or strong sun light | |
| 357. |
Which of the following is used as an anesthetic? |
| A. | dichloromethane |
| B. | tetra chloromethane |
| C. | methyl chloride |
| D. | chloroform |
| Answer» E. | |
| 358. |
In alkanes (saturated hydrocarbons) each carbon atom forms |
| A. | 2 bonds |
| B. | 4 bonds |
| C. | 6 bonds |
| D. | 8 bonds |
| Answer» C. 6 bonds | |
| 359. |
What is the term used for the reaction of a substance with oxygen or air that causes the rapid release of heat and the appearance of a flame? |
| A. | oxidation |
| B. | combustion |
| C. | burning |
| D. | reduction |
| Answer» C. burning | |
| 360. |
Which of the following is used as antifreeze in automobile radiators? |
| A. | ethane |
| B. | methane |
| C. | lycopene |
| D. | ethylene glycol |
| Answer» E. | |
| 361. |
Metallic compounds that occur naturally are called |
| A. | metal oxides |
| B. | minerals |
| C. | ores |
| D. | none of above |
| Answer» C. ores | |
| 362. |
The percentage of nitrogen (N) in urea (CH4N2O) is |
| A. | 0.5 |
| B. | 0.466 |
| C. | 0.4 |
| D. | 0.2 |
| Answer» C. 0.4 | |
| 363. |
Which of the following is used as a fuel for buses, trucks, and trains? |
| A. | diesel |
| B. | lubricating oil |
| C. | fuel oil |
| D. | bitumen |
| Answer» B. lubricating oil | |
| 364. |
Which of the following is used as a fuel for power stations, factories, and ships? |
| A. | diesel |
| B. | lubricating oil |
| C. | fuel oil |
| D. | bitumen |
| Answer» D. bitumen | |
| 365. |
Ore of chromium is called |
| A. | galena |
| B. | zinc blende |
| C. | cinnabar |
| D. | chromite |
| Answer» E. | |
| 366. |
Alkanes (saturated hydrocarbons) have a density |
| A. | less than water |
| B. | equal to water |
| C. | more than water |
| D. | more than mercury |
| Answer» B. equal to water | |
| 367. |
The reaction in which -OH group is removed from one carbon and H atom from the adjacent carbon atom is called |
| A. | substitution reaction |
| B. | addition reaction |
| C. | elimination reaction |
| D. | dehydration |
| Answer» D. dehydration | |
| 368. |
Each carbon atom in an alkane forms |
| A. | one bond |
| B. | two bonds |
| C. | three bonds |
| D. | four bonds |
| Answer» E. | |
| 369. |
Which of the following is not true about alkanes? |
| A. | they are non-polar |
| B. | they are less dense than water |
| C. | they are insoluble in water |
| D. | they are reactive towards most ionic compounds |
| Answer» E. | |
| 370. |
The red color of tomatoes is due to alkene named |
| A. | ethene |
| B. | propene |
| C. | lycopene |
| D. | butene |
| Answer» D. butene | |
| 371. |
Process in which mineral is separated from the gangue by some physical method is called |
| A. | crushing, grinding or pulverizing of the ore |
| B. | concentration of the ore |
| C. | extraction of metal |
| D. | refining of metal |
| Answer» C. extraction of metal | |
| 372. |
Raw materials for production of urea are |
| A. | ammonia and carbon dioxide |
| B. | oxygen and carbon dioxide |
| C. | ammonia and oxygen |
| D. | ammonia and phosphate |
| Answer» B. oxygen and carbon dioxide | |
| 373. |
Process in which sodium carbonate is manufactured is called |
| A. | calcination |
| B. | metallurgy |
| C. | Solvay process |
| D. | carbonation |
| Answer» D. carbonation | |
| 374. |
Number of carbon atoms per molecule in kerosene is |
| A. | 1 to 4 |
| B. | 5 to 10 |
| C. | 8 to 12 |
| D. | 10 to 16 |
| Answer» E. | |
| 375. |
The third step of the Solvay process is |
| A. | preparation of ammonical brine |
| B. | carbonation |
| C. | filtration |
| D. | calcination |
| Answer» D. calcination | |
| 376. |
The boiling point of bitumen is |
| A. | 270 °C to 340 °C |
| B. | 350 °C to 500 °C |
| C. | 500 °C to 600 °C |
| D. | more than 500 °C |
| Answer» E. | |
| 377. |
What are the raw materials used in the Solvay process? |
| A. | ammonia |
| B. | brine |
| C. | lime stone |
| D. | all of above |
| Answer» E. | |
| 378. |
Number of carbon atoms per molecule in diesel is |
| A. | 14 to 20 |
| B. | 20 to 50 |
| C. | 50 to 70 |
| D. | more than 70 |
| Answer» B. 20 to 50 | |
| 379. |
The fourth step of the Solvay process is |
| A. | preparation of ammonical brine |
| B. | carbonation |
| C. | filtration |
| D. | calcination |
| Answer» E. | |
| 380. |
When earth's crust is drilled, the hydrocarbon came out first is |
| A. | petroleum |
| B. | methane |
| C. | ethane |
| D. | butane |
| Answer» C. ethane | |
| 381. |
Number of carbon atoms per molecule in Petrol is |
| A. | 1 to 4 |
| B. | 5 to 10 |
| C. | 8 to 12 |
| D. | 10 to 16 |
| Answer» C. 8 to 12 | |
| 382. |
Which of the following is used as a chemical feedstock for making drugs, plastics, and other chemicals? |
| A. | Liquid Petroleum Gas (LPG) |
| B. | petrol |
| C. | naphtha |
| D. | kerosene |
| Answer» D. kerosene | |
| 383. |
Third step of metallurgy is |
| A. | crushing, grinding or pulverizing of the ore |
| B. | concentration of the ore |
| C. | extraction of metal |
| D. | refining of metal |
| Answer» D. refining of metal | |
| 384. |
Which of the following is used as cylinder gas for cooking? |
| A. | Liquefied petroleum gas (LPG) |
| B. | petrol |
| C. | naphtha |
| D. | kerosene |
| Answer» B. petrol | |
| 385. |
The process of smelting involves the |
| A. | reduction of metal oxides |
| B. | oxidation of minerals |
| C. | oxidation of metals |
| D. | melting of metals |
| Answer» B. oxidation of minerals | |
| 386. |
How does bromine react? |
| A. | explosively |
| B. | slowly in dark but rapidly in strong sunlight |
| C. | requires high temperature or strong sun light |
| D. | essentially unreactive |
| Answer» D. essentially unreactive | |
| 387. |
Alkanes that contain 5 to 17 atoms are in |
| A. | solid state |
| B. | liquid state |
| C. | gaseous state |
| D. | plasma state |
| Answer» C. gaseous state | |
| 388. |
What is the correct trend in the reactivity of halogen with an alkane? |
| A. | F2 > Cl2> Br2 > I2 |
| B. | I2 > Cl2 > Br2 > F2 |
| C. | Br2 > Cl2 > F2 > I2 |
| D. | F2 > Br2 > Cl2 >I2 |
| Answer» B. I2 > Cl2 > Br2 > F2 | |
| 389. |
C5-C15 members of alkenes are |
| A. | solids |
| B. | liquids |
| C. | gases |
| D. | plasma |
| Answer» C. gases | |
| 390. |
What happens if water-soluble vitamins are taken in excess? |
| A. | they cause harm |
| B. | they are readily excreted from the body |
| C. | they cause no harm |
| D. | they are not excreted from the body |
| Answer» C. they cause no harm | |
| 391. |
Which of the following causes a feeling of pressure inside the head when taken in excess amount? |
| A. | vitamin A |
| B. | vitamin B |
| C. | vitamin C |
| D. | vitamin D |
| Answer» B. vitamin B | |
| 392. |
Monosaccharides (simple sugars) have |
| A. | oxidizing nature |
| B. | reducing nature |
| C. | redox nature |
| D. | neutralizing nature |
| Answer» C. redox nature | |
| 393. |
Nutrition is derived by cows, cattle, goats, deer, sheep, and termites from |
| A. | cellulose |
| B. | starch |
| C. | monosaccharides |
| D. | oligosaccharides |
| Answer» B. starch | |
| 394. |
The amino acids which are no synthesized by the human body are called |
| A. | essential amino acids |
| B. | non essential amino acids |
| C. | simple amino acids |
| D. | complex amino acids |
| Answer» C. simple amino acids | |
| 395. |
The linkage which joins two amino acid units is called |
| A. | peptide bond |
| B. | covalent bond |
| C. | ionic bond |
| D. | hydrogen bond |
| Answer» B. covalent bond | |
| 396. |
Proteins that catalyze specific biological reactions without which life would be impossible are called |
| A. | gelatin |
| B. | enzymes |
| C. | amylase |
| D. | lactase |
| Answer» C. amylase | |
| 397. |
Which of the following acts as a thermal insulator in mammals? |
| A. | skin |
| B. | fat |
| C. | lipids |
| D. | proteins |
| Answer» C. lipids | |
| 398. |
Which of the following is required for the formation of blood? |
| A. | vitamin A |
| B. | vitamin B |
| C. | vitamin C |
| D. | vitamin D |
| Answer» D. vitamin D | |
| 399. |
What is the term used for the linkage which joins two amino acid units? |
| A. | amino group |
| B. | carboxyl group |
| C. | peptide bond |
| D. | dipeptide |
| Answer» E. | |
| 400. |
The first step of metallurgy is |
| A. | crushing, grinding or pulverizing of the ore |
| B. | concentration of the ore |
| C. | extraction of metal |
| D. | refining of metal |
| Answer» B. concentration of the ore | |