MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 1300 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 451. |
What is the atomic number of an atom, which has 10 protons and 11 neutrons? |
| A. | 1 |
| B. | 10 |
| C. | 11 |
| D. | 21 |
| Answer» C. 11 | |
| 452. |
Which of the following elements has a higher atomic number than that of magnesium? |
| A. | neon |
| B. | aluminum |
| C. | sodium |
| D. | fluorine |
| Answer» C. sodium | |
| 453. |
Which of the following elements has a higher atomic number than that of Iron? |
| A. | manganese |
| B. | cobalt |
| C. | calcium |
| D. | Chromium |
| Answer» C. calcium | |
| 454. |
What is the number of protons in a negatively charged atom (anion)? |
| A. | greater than the atomic number of the element |
| B. | less than the atomic number of the element |
| C. | more than the number of electrons in the atom |
| D. | less than the number of electrons in an atom |
| Answer» C. more than the number of electrons in the atom | |
| 455. |
Which of the following is the most characteristic property of an element? |
| A. | density |
| B. | boiling point |
| C. | mass |
| D. | Atomic number |
| Answer» E. | |
| 456. |
The atomic number of an atom shows the number of which of the following? |
| A. | electron |
| B. | proton |
| C. | neutron |
| D. | neutrons and protons |
| Answer» C. neutron | |
| 457. |
Atomic particles which have properties opposite to normal subatomic particles are known as |
| A. | positran |
| B. | antiparticle |
| C. | photon |
| D. | neutrino |
| Answer» C. photon | |
| 458. |
With what name is the name particle 'boson' related? |
| A. | J. C. Bose |
| B. | s. N. boss |
| C. | Isaac Newton |
| D. | Albert Einstein |
| Answer» C. Isaac Newton | |
| 459. |
Which of the following elements has a higher atomic number than that of neon? |
| A. | oxygen |
| B. | magnesium |
| C. | nitrogen |
| D. | Boron |
| Answer» C. nitrogen | |
| 460. |
Which of the following elements has a higher atomic number than that of Phosphorous? |
| A. | aluminum |
| B. | silicone |
| C. | chlorine |
| D. | magnesium |
| Answer» D. magnesium | |
| 461. |
Who first proposed the atomic theory of matter? |
| A. | John Dalton |
| B. | rutherford |
| C. | J. J. thomson |
| D. | niels bore |
| Answer» B. rutherford | |
| 462. |
What is the anti-particle of electron? |
| A. | positron |
| B. | proton |
| C. | alpha-particle |
| D. | beta-particle |
| Answer» B. proton | |
| 463. |
What are the three basic components of an atom? |
| A. | protons, neutrons and ions |
| B. | protons, neutrons and electrons |
| C. | Protium, deuterium and tritium |
| D. | protons, neutrinos and ions |
| Answer» C. Protium, deuterium and tritium | |
| 464. |
Who gave the 'Plum Pudding Model' for an atom? |
| A. | Anthony Lavoisier |
| B. | robert boyle |
| C. | JJ thomson |
| D. | Ernest Rutherford |
| Answer» D. Ernest Rutherford | |
| 465. |
Which one of the following is not a nucleon? |
| A. | proton |
| B. | neutron |
| C. | electron |
| D. | positron |
| Answer» D. positron | |
| 466. |
What is the 'mass number'? |
| A. | only protons |
| B. | protons and neutrons |
| C. | electron and neutron |
| D. | electron and proton |
| Answer» C. electron and neutron | |
| 467. |
'Every matter in the universe is made up of very fine particles, who said this first? |
| A. | by dalton |
| B. | Kanad has |
| C. | by rutherford |
| D. | by avogadro |
| Answer» C. by rutherford | |
| 468. |
Who is considered the 'Father of Modern Chemistry'? |
| A. | Ernest Rutherford |
| B. | otto hone |
| C. | mendeleev |
| D. | antoine lavoisier |
| Answer» E. | |
| 469. |
To find the atomic mass of an element, with which of the following the atomic mass of that element is compared? |
| A. | oxygen |
| B. | nitrogen |
| C. | hydrogen |
| D. | Carbon |
| Answer» E. | |
| 470. |
In general, the physical classification of the states of matter does not include which state? |
| A. | colloidal |
| B. | gaseous |
| C. | fluid |
| D. | Solid |
| Answer» B. gaseous | |
| 471. |
Which one of the following is not a property of a mixture in the context of science? |
| A. | its structure is fixed |
| B. | It is made up of two or more elements or compounds |
| C. | It can be separated by physical means |
| D. | The components of a mixture retain their properties |
| Answer» B. It is made up of two or more elements or compounds | |
| 472. |
What is the mass number of the nucleus? |
| A. | number of nucleons in the nucleus |
| B. | number of protons in the nucleus |
| C. | number of neutrons in the nucleus |
| D. | neither of the above |
| Answer» B. number of protons in the nucleus | |
| 473. |
What is the valency of an element with 2, 8, 2 configuration? |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 0 |
| Answer» B. 4 | |
| 474. |
What is the number of neutrons in the nucleus of a hydrogen atom? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 0 |
| Answer» E. | |
| 475. |
Which orbital or shell has the least number of electrons? |
| A. | K-Class |
| B. | L-orbit |
| C. | M-Class |
| D. | N-class |
| Answer» B. L-orbit | |
| 476. |
Which orbit is closest to the nucleus of an atom? |
| A. | K |
| B. | L |
| C. | M |
| D. | N |
| Answer» B. L | |
| 477. |
The orbit around the nucleus with a fixed energy is called? |
| A. | nucleons |
| B. | mason |
| C. | energy level |
| D. | room |
| Answer» D. room | |
| 478. |
Which of the following has electronic configuration 2, 8, 13, 1? |
| A. | Chromium |
| B. | Copper |
| C. | silver |
| D. | palladium |
| Answer» B. Copper | |
| 479. |
Which one of the following particles is chargeless? |
| A. | electron |
| B. | proton |
| C. | neutron |
| D. | none of these |
| Answer» D. none of these | |
| 480. |
Which of the following cannot be explained by Rutherford's experiment? |
| A. | the electronic configuration of the atom |
| B. | of nuclear stability |
| C. | (A |
| D. | none of these |
| Answer» D. none of these | |
| 481. |
The mass number of an atom is equal to? |
| A. | total number of nucleons |
| B. | total number of neutrons |
| C. | number of protons and electrons |
| D. | total number of protons, electrons and neutrons |
| Answer» B. total number of neutrons | |
| 482. |
Which of the following is called a nucleon? |
| A. | electron |
| B. | protons and neutrons |
| C. | electron and proton |
| D. | neutron |
| Answer» C. electron and proton | |
| 483. |
Which metal is bombarded by α-ray scattering in Rutherford's experiment? |
| A. | Copper |
| B. | silver |
| C. | Gold |
| D. | iron |
| Answer» D. iron | |
| 484. |
Rutherford's α-particle scattering experiment is responsible for the discovery of? |
| A. | neutron |
| B. | proton |
| C. | electron |
| D. | atomic nucleus |
| Answer» E. | |
| 485. |
Is there a charge on a proton? |
| A. | equal to the charge of the electron |
| B. | opposite to the charge of the electron |
| C. | (A |
| D. | neither of the above |
| Answer» D. neither of the above | |
| 486. |
Rutherford scattering experiment shows the presence of? |
| A. | atoms in all matter |
| B. | electrons in an atom |
| C. | neutrons in an atom |
| D. | nucleus in an atom |
| Answer» E. | |
| 487. |
What is a proton? |
| A. | Moody |
| B. | Funded |
| C. | Negative |
| D. | none of these |
| Answer» C. Negative | |
| 488. |
What is the positively charged part of a nucleus called? |
| A. | proton |
| B. | electron |
| C. | neutron |
| D. | Nucleus |
| Answer» B. electron | |
| 489. |
Which of the following elements does not have a neutron? |
| A. | oxygen |
| B. | nitrogen |
| C. | hydrogen |
| D. | Copper |
| Answer» D. Copper | |
| 490. |
Which of the following metals does not react with water to produce hydrogen gas? |
| A. | potassium |
| B. | lithium |
| C. | sodium |
| D. | cadmium |
| Answer» E. | |
| 491. |
Which of the following metals react with water at normal temperature? |
| A. | copper |
| B. | Aluminum |
| C. | potassium |
| D. | Gold |
| Answer» C. potassium | |
| 492. |
The ability to pull metals into thin wires is called? |
| A. | tensile |
| B. | Trauma |
| C. | conductivity |
| D. | acoustics |
| Answer» B. Trauma | |
| 493. |
Which of the following elements cannot displace hydrogen gas from a dilute acid? |
| A. | zinc |
| B. | iron |
| C. | manganese |
| D. | Copper |
| Answer» E. | |
| 494. |
By whom was the neutron discovered? |
| A. | rutherford |
| B. | Dalton |
| C. | chadwick |
| D. | J. J. thomson |
| Answer» D. J. J. thomson | |
| 495. |
Which of the following particles revolves around the nucleus of an atom and is negatively charged? |
| A. | proton |
| B. | electron |
| C. | Positron |
| D. | neutron |
| Answer» C. Positron | |
| 496. |
What is the percentage of lead in a lead pencil? |
| A. | 0 |
| B. | 100 |
| C. | 77 |
| D. | 65 |
| Answer» B. 100 | |
| 497. |
What is the density of gold metal than that of magnesium? |
| A. | Less |
| B. | equal |
| C. | more |
| D. | none of these |
| Answer» D. none of these | |
| 498. |
What is gold made of jewellery? |
| A. | 22 carat |
| B. | 24 carat |
| C. | 16 carats |
| D. | 23 carats |
| Answer» B. 24 carat | |
| 499. |
homogeneous category is found? |
| A. | in alkene |
| B. | in alkyne |
| C. | in alkene |
| D. | in all these |
| Answer» E. | |
| 500. |
Which of the following are the metals found in free state in the earth's crust? |
| A. | Ag |
| B. | Mg |
| C. | Al |
| D. | Zn |
| Answer» B. Mg | |