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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.
| 551. |
What is the term used for a salt which is formed by the partial neutralization of a polyhydroxy base? |
| A. | basic salt |
| B. | common salt |
| C. | acid salt |
| D. | normal salt |
| Answer» B. common salt | |
| 552. |
What is the color of methyl orange in the NaOH solution? |
| A. | red |
| B. | yellow |
| C. | blue |
| D. | pink |
| Answer» C. blue | |
| 553. |
Considering Bronsted-Lowery theory, an acid is a |
| A. | proton acceptor |
| B. | electron acceptor |
| C. | proton donor |
| D. | electron donor |
| Answer» D. electron donor | |
| 554. |
What is the first part of the name of salt? |
| A. | negative part of the acid |
| B. | base |
| C. | metal ion |
| D. | non metallic ion |
| Answer» D. non metallic ion | |
| 555. |
What is the color of methyl red in acidic solution? |
| A. | red |
| B. | yellow |
| C. | blue |
| D. | colorless |
| Answer» B. yellow | |
| 556. |
What is the pH of tomato juice? |
| A. | 4 |
| B. | 7 |
| C. | 8 |
| D. | 9 |
| Answer» B. 7 | |
| 557. |
Taste of base is |
| A. | sour |
| B. | sweet |
| C. | bitter |
| D. | it is tasteless |
| Answer» D. it is tasteless | |
| 558. |
The amount of Hydrochloric Acid (HCl) secreted daily by gastric glands is |
| A. | 1 lit |
| B. | 3 lit |
| C. | 2 lit |
| D. | 4 lit |
| Answer» D. 4 lit | |
| 559. |
The pH of water is |
| A. | 8 |
| B. | 3 |
| C. | 2 |
| D. | 7 |
| Answer» E. | |
| 560. |
If the pH value is greater than 7, then the solution is |
| A. | acidic |
| B. | basic |
| C. | neutral |
| D. | salty |
| Answer» C. neutral | |
| 561. |
A species which can accept a proton is called |
| A. | acid |
| B. | base |
| C. | neutral compound |
| D. | cation |
| Answer» C. neutral compound | |
| 562. |
Corrosive effect on the skin is caused by |
| A. | acids |
| B. | bases |
| C. | water |
| D. | mercury |
| Answer» B. bases | |
| 563. |
The Bronsted-Lowery acid in the reaction H2O + NH3 NH+ 4 + OH- is |
| A. | H2O |
| B. | NH3 |
| C. | OH- |
| D. | NH+4 |
| Answer» B. NH3 | |
| 564. |
If the concentration of H+ is greater than 1 x 10-7 then solution is |
| A. | neutral |
| B. | basic |
| C. | acidic |
| D. | aqueous |
| Answer» D. aqueous | |
| 565. |
The pH (power of Hydrogen) value of black coffee is |
| A. | 7 |
| B. | 8 |
| C. | 3 |
| D. | 5 |
| Answer» E. | |
| 566. |
Substances that react with both acids and bases are called |
| A. | neutral |
| B. | conjugate bases |
| C. | amphoteric substances |
| D. | conjugate acids |
| Answer» D. conjugate acids | |
| 567. |
In pure water, the concentrations of |
| A. | H+ and OH- ions are equal |
| B. | H+ ions is more |
| C. | OH- ions is more |
| D. | Cl- is more |
| Answer» B. H+ ions is more | |
| 568. |
Which of the following is widely used in the oxy-acetylene welding and cutting metals? |
| A. | ethylene |
| B. | acetylene |
| C. | phenol |
| D. | methanol |
| Answer» C. phenol | |
| 569. |
An alkane with molecular formula C5H12 is called |
| A. | butane |
| B. | pentane |
| C. | hexane |
| D. | heptane |
| Answer» C. hexane | |
| 570. |
Methanoic acid is an example of |
| A. | aldehydes |
| B. | ketones |
| C. | carboxylic acids |
| D. | ethers |
| Answer» D. ethers | |
| 571. |
Organic compounds include |
| A. | alkali metals |
| B. | alkaline earth metals |
| C. | hydrocarbons and their derivatives |
| D. | halogens |
| Answer» D. halogens | |
| 572. |
If we remove one hydrogen (H) atom from an alkane (saturated hydrocarbon), we get |
| A. | alkyl group |
| B. | alkene group |
| C. | alkyne group |
| D. | aldehyde group |
| Answer» B. alkene group | |
| 573. |
The raw materials for the Solvay process include |
| A. | ammonia |
| B. | brine |
| C. | lime stone |
| D. | all of above |
| Answer» E. | |
| 574. |
Solvay process is used to make |
| A. | potassium carbonate |
| B. | sodium carbonate |
| C. | NaCl |
| D. | NaOH |
| Answer» C. NaCl | |
| 575. |
Number of carbon atoms per molecule in bitumen are |
| A. | 14 to 20 |
| B. | 20 to 50 |
| C. | 50 to 70 |
| D. | more than 70 |
| Answer» E. | |
| 576. |
Number of carbon atoms per molecule in naphtha are |
| A. | 1 to 4 |
| B. | 5 to 10 |
| C. | 8 to 12 |
| D. | 10 to 16 |
| Answer» D. 10 to 16 | |
| 577. |
Ore of aluminum is called |
| A. | hematite |
| B. | chalcopyrite |
| C. | bauxite |
| D. | halite |
| Answer» D. halite | |
| 578. |
What is the term used for a reaction in which two water molecules produce ions? |
| A. | hydrogenation |
| B. | halogenation |
| C. | dehydration |
| D. | self-ionization |
| Answer» E. | |
| 579. |
What happens to the solution when pH is less than 7? |
| A. | it becomes acidic |
| B. | it becomes basic |
| C. | it becomes neutral |
| D. | it becomes amphoteric |
| Answer» B. it becomes basic | |
| 580. |
What is the color of Phenolphthalein in a basic solution? |
| A. | yellow |
| B. | blue |
| C. | pink |
| D. | colorless |
| Answer» D. colorless | |
| 581. |
The first successful theory of acids and bases was proposed by |
| A. | J.N Bronsted |
| B. | Svante Arrhenius |
| C. | T.M lowery |
| D. | G.N Lewis |
| Answer» C. T.M lowery | |
| 582. |
What is the color of methyl orange in the soap solution? |
| A. | red |
| B. | yellow |
| C. | blue |
| D. | pink |
| Answer» C. blue | |
| 583. |
The general formula for carboxylic acids is |
| A. | R-OH |
| B. | R-O-R |
| C. | R-COOH |
| D. | R-NH2 |
| Answer» D. R-NH2 | |
| 584. |
Which of the following are characterized by the presence of the hydroxyl group attached to a hydrocarbon chain? |
| A. | halo alkanes |
| B. | phenols |
| C. | ethers |
| D. | alcohols |
| Answer» E. | |
| 585. |
An alkane with molecular formula C10H22 is called |
| A. | butane |
| B. | octane |
| C. | Nonane |
| D. | Decane |
| Answer» E. | |
| 586. |
Butane (alkane) has |
| A. | 3 carbon atoms |
| B. | 5 carbon atoms |
| C. | 4 carbon atoms |
| D. | 2 carbon atoms |
| Answer» D. 2 carbon atoms | |
| 587. |
Which of the following has two hydrocarbon groups bonded to the carbonyl carbon atom? |
| A. | aldehydes |
| B. | ketones |
| C. | carboxylic acids |
| D. | ethers |
| Answer» C. carboxylic acids | |
| 588. |
In magnetic separation, magnets are used to separate |
| A. | mineral and gangue |
| B. | metal and mineral |
| C. | metal and gangue |
| D. | iron and steel |
| Answer» B. metal and mineral | |
| 589. |
The fertilizer which doesn't affect the texture of the soil is |
| A. | urea |
| B. | ammonium sulphate |
| C. | ammonium phosphate |
| D. | super phosphate |
| Answer» B. ammonium sulphate | |
| 590. |
Ore of sodium is called |
| A. | hematite |
| B. | chalcopyrite |
| C. | bauxite |
| D. | halite |
| Answer» E. | |
| 591. |
The last 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» E. | |
| 592. |
Naturally occurring metallic compounds are called |
| A. | metalloids |
| B. | minerals |
| C. | hard solids |
| D. | soft solids |
| Answer» C. hard solids | |
| 593. |
Which of the following is used as a fuel for motor cars and vehicles? |
| A. | Liquid Petroleum Gas (LPG) |
| B. | petrol |
| C. | naphtha |
| D. | kerosene |
| Answer» C. naphtha | |
| 594. |
The process of separating metal from ore is called |
| A. | magnetic separation |
| B. | floatation process |
| C. | metallurgy |
| D. | cyclone separation |
| Answer» D. cyclone separation | |
| 595. |
Which of the following used in paving roads and making roofing material? |
| A. | diesel |
| B. | lubricating oil |
| C. | fuel oil |
| D. | bitumen |
| Answer» E. | |
| 596. |
The boiling point of naphtha is |
| A. | below 20 °C |
| B. | 35 °C to 70 °C |
| C. | 70 °C to 120 °C |
| D. | 170 °C to 250 °C |
| Answer» D. 170 °C to 250 °C | |
| 597. |
Compounds which are added in the soil to provide essential elements to plants are called |
| A. | carbonates |
| B. | salts |
| C. | fertilizers |
| D. | metals |
| Answer» D. metals | |
| 598. |
Considering alkyl radicals, what is the term used for the group obtained by removing H-atom from central carbon atom? |
| A. | Iso-propyl |
| B. | n-propyl |
| C. | neo-propyl |
| D. | propyl |
| Answer» B. n-propyl | |
| 599. |
What are the compounds called when an -OH group is attached to a benzene ring? |
| A. | halo alkanes |
| B. | phenols |
| C. | ethers |
| D. | alcohols |
| Answer» C. ethers | |
| 600. |
A mixture of low boiling hydrocarbons is called |
| A. | coal |
| B. | petroleum |
| C. | natural gas |
| D. | Liquid Petroleum Gas (LPG) |
| Answer» D. Liquid Petroleum Gas (LPG) | |