MCQOPTIONS
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MCQOPTIONS
This section includes 376 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 351. |
A fluorine atom (F) affects pair of an electron in a covalent bond, which is |
| A. | weakest |
| B. | strongest |
| C. | neutral |
| D. | constant |
| Answer» C. neutral | |
| 352. |
Fluorine reacts with noble gases to form |
| A. | krypton |
| B. | xenon |
| C. | radon |
| D. | all of above |
| Answer» E. | |
| 353. |
Mixtures can be converted to compounds through |
| A. | physical change |
| B. | chemical change |
| C. | high pressures |
| D. | catalytic reactions |
| Answer» C. high pressures | |
| 354. |
It cannot be split into simpler substances through chemical processes. It is |
| A. | a matter |
| B. | an element |
| C. | a metal |
| D. | an atom |
| Answer» C. a metal | |
| 355. |
An oil molecule may contain |
| A. | over 10 atoms |
| B. | over 100 atoms |
| C. | over 1000 atoms |
| D. | over 10 molecules of its distillate |
| Answer» C. over 1000 atoms | |
| 356. |
Element is made up of |
| A. | particles |
| B. | matter |
| C. | isotopes |
| D. | atoms |
| Answer» B. matter | |
| 357. |
Brass is |
| A. | a compound |
| B. | a combination of copper and zinc |
| C. | a combination of copper and tin |
| D. | an alloy |
| Answer» C. a combination of copper and tin | |
| 358. |
Symbol of silver is |
| A. | Si |
| B. | Se |
| C. | Sn |
| D. | Ag |
| Answer» E. | |
| 359. |
Ni is symbol of |
| A. | Neon |
| B. | Nitrogen |
| C. | Nickel |
| D. | Tin |
| Answer» D. Tin | |
| 360. |
Other than Oxygen (O₂) and Calcium (Ca), 92% of earth's crust is made up of |
| A. | silicon |
| B. | Iron |
| C. | Aluminum |
| D. | all of the above |
| Answer» E. | |
| 361. |
Pb is symbol of |
| A. | Lead |
| B. | Phosphorous |
| C. | Platinum |
| D. | Palladium |
| Answer» B. Phosphorous | |
| 362. |
Symbol of Cobalt is |
| A. | Co |
| B. | Cu |
| C. | Cl |
| D. | Ca |
| Answer» B. Cu | |
| 363. |
A compound results from chemical combination of |
| A. | two or more atoms |
| B. | two or more non-metals |
| C. | two or more metalloids |
| D. | both a and b |
| Answer» E. | |
| 364. |
Symbol of Boron is |
| A. | B |
| B. | Ba |
| C. | Br |
| D. | Be |
| Answer» B. Ba | |
| 365. |
Smallest metal name in period table is Tin with a symbol of |
| A. | Ti |
| B. | Tn |
| C. | Sn |
| D. | Fe |
| Answer» D. Fe | |
| 366. |
Smallest particle of a compound is |
| A. | atom |
| B. | electrons |
| C. | molecules |
| D. | all of these |
| Answer» D. all of these | |
| 367. |
A compound is a |
| A. | pure substance |
| B. | an impure substance due to various elements |
| C. | substance with varying boiling points |
| D. | a substance with varying melting points |
| Answer» B. an impure substance due to various elements | |
| 368. |
Copper wire is an example of |
| A. | an alloy |
| B. | a compound |
| C. | a mixture |
| D. | an element |
| Answer» E. | |
| 369. |
Symbol of Copper is |
| A. | Co |
| B. | Cu |
| C. | Cl |
| D. | Ca |
| Answer» C. Cl | |
| 370. |
Symbol of Mercury is |
| A. | Mg |
| B. | Hg |
| C. | Me |
| D. | Mr |
| Answer» D. Mr | |
| 371. |
Elements common in both man and brick wall is |
| A. | O |
| B. | C |
| C. | Ca |
| D. | all of these |
| Answer» E. | |
| 372. |
Symbol of Magnesium is |
| A. | Mg |
| B. | Mn |
| C. | Hg |
| D. | M |
| Answer» B. Mn | |
| 373. |
Naturally occurring elements are |
| A. | 82 |
| B. | 92 |
| C. | 99 |
| D. | above 100 by now |
| Answer» C. 99 | |
| 374. |
Other than O and C, main elements of a brick wall includes |
| A. | Silicon (Si) |
| B. | Calcium (Ca) |
| C. | Aluminum (Al) |
| D. | both a and b |
| Answer» E. | |
| 375. |
A particle may be |
| A. | an atom |
| B. | a molecule |
| C. | an isotope |
| D. | all of these |
| Answer» E. | |
| 376. |
Brass is an example of |
| A. | An alloy |
| B. | a compound |
| C. | a mixture |
| D. | an element |
| Answer» B. a compound | |