MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 64577 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 1351. |
On reduction of 798g of iron oxide by profound carbon monoxide will release mass of iron equal to |
| A. | 588g |
| B. | 558g |
| C. | 585g |
| D. | 575g |
| Answer» C. 585g | |
| 1352. |
A gas which has a strong foul smell of bad eggs is |
| A. | bromine |
| B. | hydrogen sulfide |
| C. | methane |
| D. | chlorine |
| Answer» C. methane | |
| 1353. |
The formula for pressure in liquids is |
| A. | p = Pg/h, where P is density, g is gravity and is height |
| B. | p = hPg, where h is height, P is density and g is gravity |
| C. | p = hP/g, where h is height, P is density and g is gravity |
| D. | p = hg/P, where h is height, g is gravity and P is density |
| Answer» C. p = hP/g, where h is height, P is density and g is gravity | |
| 1354. |
The process in which liquid is turned to solid is termed as |
| A. | boiling |
| B. | melting |
| C. | condensation |
| D. | freezing |
| Answer» E. | |
| 1355. |
A skateboarder is moving at a speed of 5 m s |
| A. | 1000 J |
| B. | 250 J |
| C. | 500 J |
| D. | 2000 J |
| Answer» C. 500 J | |
| 1356. |
The oxidation state of transition elements can be changed by treating it with a suitable |
| A. | catalyst |
| B. | reactant |
| C. | all of them |
| D. | reagent |
| Answer» E. | |
| 1357. |
The degree of polarisation depends on |
| A. | polarisability |
| B. | charge density of cations |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 1358. |
In water, the greater electron repulsion is in between |
| A. | bond pair-bond pair |
| B. | lone pair-bond pair |
| C. | Pi-bonds |
| D. | lone pair-lone pair |
| Answer» E. | |
| 1359. |
Which of these molecules require more bond energy? |
| A. | Oxygen |
| B. | Nitrogen |
| C. | Hydrogen |
| D. | CO |
| Answer» C. Hydrogen | |
| 1360. |
The mass number is the |
| A. | nucleon number |
| B. | atomic number |
| C. | none |
| D. | proton number |
| Answer» B. atomic number | |
| 1361. |
Human enzymes start to denature at the temperature above |
| A. | 65 °C |
| B. | 40 °C |
| C. | 15 °C |
| D. | 95 °C |
| Answer» C. 15 °C | |
| 1362. |
On earth the object weighs 57 N and on moon it weighs 9.12 N. Its mass is |
| A. | 5.7 N |
| B. | 35.6 N |
| C. | 7.52 N |
| D. | 0.912 N |
| Answer» B. 35.6 N | |
| 1363. |
The elements of group II in periodic table are also known as |
| A. | alkalis |
| B. | alkaline earth metals |
| C. | acids |
| D. | bases |
| Answer» C. acids | |
| 1364. |
Decolorisation of bromine water will occur on mixing it with |
| A. | benzene |
| B. | ethene |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 1365. |
Such a solution which can hold no more a of a solute is termed as |
| A. | unsaturated solution |
| B. | saturated solution |
| C. | super saturated solution |
| D. | buffer solution |
| Answer» C. super saturated solution | |
| 1366. |
Hydrolysis of substituted amides will give the product |
| A. | amines |
| B. | carboxylic acids |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 1367. |
The term fluids is used for |
| A. | gases only |
| B. | liquids only |
| C. | gels only |
| D. | liquids and gases both |
| Answer» E. | |
| 1368. |
By typing 'In 2=' in a calculator it will display |
| A. | syntax error |
| B. | 0.693 |
| C. | 0.396 |
| D. | 0.963 |
| Answer» C. 0.396 | |
| 1369. |
The Group IV tetrachlorides |
| A. | have low boiling points |
| B. | have high boiling points |
| C. | Both A and C |
| D. | cannot hydrolysed by water |
| Answer» B. have high boiling points | |
| 1370. |
An unmarked alcohol-in-glass thermometer has l |
| A. | 40 °C |
| B. | 20 °C |
| C. | 80 °C |
| D. | 60 °C |
| Answer» D. 60 °C | |
| 1371. |
Benzene react with bromine in the presence of an anhydrous iron bromide(III) catalyst to give |
| A. | addition reaction |
| B. | electrophilic substitution |
| C. | all of them |
| D. | nucleophillic substitution |
| Answer» C. all of them | |
| 1372. |
Geranium(IV) is an acidic oxide which has very similar properties to that of |
| A. | silicon dioxide |
| B. | silicon |
| C. | silicon salt |
| D. | silicon trioxide |
| Answer» B. silicon | |
| 1373. |
The mechanism of a catalyst is termed as |
| A. | hydrolysis |
| B. | catalysis |
| C. | none |
| D. | proteolysis |
| Answer» C. none | |
| 1374. |
To make nitrobenzene, nitrating mixture is refluxed at |
| A. | 15°C |
| B. | 55°C |
| C. | 43°C |
| D. | 25°C |
| Answer» C. 43°C | |
| 1375. |
For the electrolysis of aluminum oxide it must be |
| A. | liquid |
| B. | solid |
| C. | molten |
| D. | vapor |
| Answer» D. vapor | |
| 1376. |
Which of these react vigorously to produce H |
| A. | Mg(s) |
| B. | Na(s) |
| C. | None of Above |
| D. | both of these |
| Answer» C. None of Above | |
| 1377. |
Which statement about Group II metals is incorrect? |
| A. | The metals are reduced when they react. |
| B. | The metals act as reducing agents. |
| C. | The metals of Group II are reactive metals |
| D. | The metals of Group II loose electrons |
| Answer» B. The metals act as reducing agents. | |
| 1378. |
When electrons are passed through electromagnetic field, electrons are deflected away from |
| A. | negative plate |
| B. | positive plate |
| C. | none |
| D. | both a and b |
| Answer» B. positive plate | |
| 1379. |
Further addition of ethanol prepared by primary oxidation will lead to different product as |
| A. | ketones |
| B. | ethanoic acid |
| C. | all of them |
| D. | benzaldehyde |
| Answer» C. all of them | |
| 1380. |
Fish and mammals can not rely upon diffusion alone because |
| A. | cells are metabolically very active |
| B. | cells are often deep within their bodies |
| C. | All of above |
| D. | large requirements for exchange of nutrients and wastes |
| Answer» D. large requirements for exchange of nutrients and wastes | |
| 1381. |
If the reaction is likely to occur then we say that it is |
| A. | impossible |
| B. | feasible |
| C. | none |
| D. | constant |
| Answer» C. none | |
| 1382. |
Wind and waves are used by the turbines to convert |
| A. | Kinetic Energy into Electrical Energy |
| B. | Mechanical Energy into Electrical Energy |
| C. | Potential Energy into Electrical Energy |
| D. | Potential energy into Kinetic Energy |
| Answer» B. Mechanical Energy into Electrical Energy | |
| 1383. |
Lightning during thunderstorm provides energy for reaction of |
| A. | oxygen |
| B. | nitrogen |
| C. | carbon dioxide |
| D. | both a and b |
| Answer» E. | |
| 1384. |
Knocking a nail into a wooden block with a hammer involves conversion between different forms of energy, which one of the following choices present this conversion in correct order. |
| A. | chemical energy → kinetic energy → gravitational potential energy → (sound energy + h |
| B. | chemical energy → gravitational potential energy → kinetic energy → (sound energy + h |
| C. | (sound energy + heat energy) → chemical energy → kinetic energy → gravitational poten |
| D. | chemical energy → (sound energy + heat energy) → kinetic energy → gravitational poten |
| Answer» C. (sound energy + heat energy) → chemical energy → kinetic energy → gravitational poten | |
| 1385. |
Metals are good conductors due to |
| A. | crystalline lumps |
| B. | ionic lattices |
| C. | localized electrons |
| D. | mostly solids |
| Answer» D. mostly solids | |
| 1386. |
The metallic radii of which of these metals are biggest? |
| A. | Ca |
| B. | Be |
| C. | Mg |
| D. | Sr |
| Answer» E. | |
| 1387. |
in ammonium ion, the electrons required between hydrogen ion and ammonium ion are |
| A. | 2 |
| B. | 1 |
| C. | 4 |
| D. | 3 |
| Answer» B. 1 | |
| 1388. |
When a rubber band is compressed, what type of energy does it possess? |
| A. | Thermal Energy |
| B. | Potential Energy |
| C. | Sound Energy |
| D. | Kinetic Energy |
| Answer» C. Sound Energy | |
| 1389. |
The bond angles in CH |
| A. | 87.5° |
| B. | 180° |
| C. | 109.5° |
| D. | 120° |
| Answer» D. 120° | |
| 1390. |
First calculations on equilibrium were carried out by |
| A. | Peter Waage |
| B. | Cato Guldberg |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 1391. |
The pull on the both ends of an object is termed as |
| A. | Tension |
| B. | Contact force |
| C. | Weight |
| D. | Friction |
| Answer» B. Contact force | |
| 1392. |
The element Silicon (Si) in Group IV is a |
| A. | non-metal |
| B. | metal |
| C. | None of Above |
| D. | metalloid |
| Answer» E. | |
| 1393. |
Fluorine is more oxiding in nature than |
| A. | fluorine |
| B. | iodine |
| C. | bromine |
| D. | chlorine |
| Answer» C. bromine | |
| 1394. |
Each carbon atom forms four covalent bonds with other carbon atoms arranging them tetrahedral in |
| A. | diamond |
| B. | graphite |
| C. | brass |
| D. | silicon |
| Answer» B. graphite | |
| 1395. |
Nylon 6 is made from |
| A. | caprolactum |
| B. | condensation reaction |
| C. | all of them |
| D. | hexanedioic acid |
| Answer» B. condensation reaction | |
| 1396. |
Upon hydration of Al |
| A. | basic |
| B. | acidic |
| C. | None of Above |
| D. | catalyst |
| Answer» C. None of Above | |
| 1397. |
Increase in pressure |
| A. | raises the melting point of ice |
| B. | lowers the melting point of ice |
| C. | has no effect on the melting point of ice or boiling point of water |
| D. | lowers the boiling point of water |
| Answer» C. has no effect on the melting point of ice or boiling point of water | |
| 1398. |
The electronegativity of Sodium is |
| A. | 0.9 |
| B. | 1.2 |
| C. | 1.5 |
| D. | 1.8 |
| Answer» B. 1.2 | |
| 1399. |
Ionic compounds are solid at |
| A. | room pressure |
| B. | room temperature |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 1400. |
Compounds with oxidation state +2 have greater ionic character than with oxidation state |
| A. | 3 |
| B. | 1 |
| C. | 5 |
| D. | 4 |
| Answer» E. | |