MCQOPTIONS
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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.
| 951. |
Who has the largest number of isotopes? |
| A. | lead |
| B. | uranium |
| C. | polonium |
| D. | hydrogen |
| Answer» D. hydrogen | |
| 952. |
Carbon dating is used to determine the age of which of the following. |
| A. | plants |
| B. | rocks |
| C. | fossil |
| D. | all these |
| Answer» D. all these | |
| 953. |
Who invented the atomic bomb? |
| A. | rutherford |
| B. | auto han |
| C. | madam curie |
| D. | Rutherford and Madame Curie |
| Answer» C. madam curie | |
| 954. |
How many isotopes of hydrogen are there? |
| A. | 5 |
| B. | 3 |
| C. | 2 |
| D. | 4 |
| Answer» C. 2 | |
| 955. |
Which of the following compound has a tetrahedral shape? |
| A. | water |
| B. | ammonia |
| C. | acetylene |
| D. | carbon tetrachloride |
| Answer» E. | |
| 956. |
Which of the following rays has the lowest volumetric potential? |
| A. | alpha ray |
| B. | beta ray |
| C. | gamma ray |
| D. | none of these |
| Answer» D. none of these | |
| 957. |
Isobars are formed by the emission of which of the following? |
| A. | x rays |
| B. | gamma ray |
| C. | beta ray |
| D. | alpha ray |
| Answer» D. alpha ray | |
| 958. |
Which of the following rays has the highest penetrating power? |
| A. | alpha ray |
| B. | gamma ray |
| C. | beta ray |
| D. | none of these |
| Answer» C. beta ray | |
| 959. |
Which of the following has negative charge? |
| A. | alpha ray |
| B. | gamma ray |
| C. | x rays |
| D. | beta ray |
| Answer» E. | |
| 960. |
Energy is emitted from the Sun? |
| A. | by chemical reaction |
| B. | by burning coal |
| C. | by nuclear fission |
| D. | by nuclear fusion |
| Answer» E. | |
| 961. |
How is the age of the Earth calculated? |
| A. | by carbon dating |
| B. | by biological clock |
| C. | from uranium dating |
| D. | none of these |
| Answer» D. none of these | |
| 962. |
What type of charge does β-rays carry? |
| A. | negative |
| B. | positive |
| C. | zero charge |
| D. | none of these |
| Answer» B. positive | |
| 963. |
Who discovered alpha and beta rays? |
| A. | Willard |
| B. | Dalton |
| C. | faraday |
| D. | rutherford |
| Answer» E. | |
| 964. |
Who discovered X rays? |
| A. | faraday |
| B. | newton |
| C. | rutherford |
| D. | none of these |
| Answer» B. newton | |
| 965. |
Which scientist first discovered radioactivity? |
| A. | Henry Bequerel |
| B. | Irene Curie |
| C. | madam curie |
| D. | none of these |
| Answer» B. Irene Curie | |
| 966. |
Who discovered gamma rays? |
| A. | rutherford |
| B. | faraday |
| C. | chadwick |
| D. | none of these |
| Answer» B. faraday | |
| 967. |
What do the chemical properties of an element depend on? |
| A. | on atomic number |
| B. | on mass number |
| C. | at atomic mass |
| D. | at atomic weight |
| Answer» B. on mass number | |
| 968. |
Which of the following cannot be divided? |
| A. | money ion |
| B. | nuclear |
| C. | Nucleus |
| D. | photon |
| Answer» E. | |
| 969. |
What is the property of radioactivity? |
| A. | neutron |
| B. | electron |
| C. | proton |
| D. | Nucleus |
| Answer» E. | |
| 970. |
Who propounded the uncertainty principle? |
| A. | heisenberg |
| B. | Paulie |
| C. | rutherford |
| D. | travirens |
| Answer» B. Paulie | |
| 971. |
What is the number of core electrons in sodium atom? |
| A. | 9 |
| B. | 8 |
| C. | 11 |
| D. | 10 |
| Answer» E. | |
| 972. |
The chemical nature of an element depend on? |
| A. | on electron |
| B. | on the neutron |
| C. | on the valence electron |
| D. | on the proton |
| Answer» D. on the proton | |
| 973. |
On what fundamental particles does the mass of an atom depend? |
| A. | electrons and protons |
| B. | electrons and neutrons |
| C. | neutrons and protons |
| D. | proton electron and neutron |
| Answer» D. proton electron and neutron | |
| 974. |
The nucleus was discovered to be positively charged? |
| A. | John Dalton |
| B. | rutherford |
| C. | Aristotle |
| D. | none of these |
| Answer» C. Aristotle | |
| 975. |
With the help of which particles did Rutherford discover the nucleus? |
| A. | γ -कण |
| B. | β -कण |
| C. | X - Particle |
| D. | α -कण |
| Answer» E. | |
| 976. |
By the scattering of which rays the size of the nucleus can be estimated? |
| A. | γ -कण |
| B. | β -कण |
| C. | δ - कण |
| D. | α -कण |
| Answer» E. | |
| 977. |
According to Dalton's atomic theory, which is the smallest particle that can live freely? |
| A. | molecule |
| B. | cation |
| C. | nuclear |
| D. | Debt |
| Answer» D. Debt | |
| 978. |
What is the smallest part of an element called? |
| A. | nuclear |
| B. | Debt |
| C. | cation |
| D. | molecule |
| Answer» B. Debt | |
| 979. |
Who among the following propounded the molecular theory? |
| A. | John Dalton |
| B. | madam curie |
| C. | chadwick |
| D. | faraday |
| Answer» B. madam curie | |
| 980. |
What is the International Standard for Atomic Weight? |
| A. | H-1 |
| B. | N-15 |
| C. | O-16 |
| D. | C-12 |
| Answer» E. | |
| 981. |
How many electrons can be in the outermost shell of an atom? |
| A. | 10 |
| B. | 8 |
| C. | 6 |
| D. | 20 |
| Answer» C. 6 | |
| 982. |
What do the properties of an atom depend on? |
| A. | on the electronic structure |
| B. | on the number of neutrons |
| C. | at atomic weight |
| D. | on the number of protons |
| Answer» B. on the number of neutrons | |
| 983. |
Which of the following atoms does not have a neutron in its nucleus? |
| A. | helium |
| B. | tritium |
| C. | hydrogen |
| D. | lithium |
| Answer» D. lithium | |
| 984. |
Who discovered the atomic nucleus? |
| A. | thomson |
| B. | rutherford |
| C. | chadwick |
| D. | John Dalton |
| Answer» C. chadwick | |
| 985. |
Which of the following is a chargeless particle? |
| A. | proton |
| B. | electron |
| C. | neutron |
| D. | none of these |
| Answer» D. none of these | |
| 986. |
Who first discovered the wave nature of electron? |
| A. | de broglie |
| B. | rutherford |
| C. | thomson |
| D. | Linnaeus |
| Answer» B. rutherford | |
| 987. |
An Indian scientist whose name is associated with a specific root particle? |
| A. | boss |
| B. | Raman |
| C. | saha |
| D. | Chandrashekhar |
| Answer» B. Raman | |
| 988. |
Who discovered the neutron? |
| A. | chadwick |
| B. | newton |
| C. | faraday |
| D. | none of these |
| Answer» B. newton | |
| 989. |
Which is the pure element? |
| A. | glass |
| B. | cement |
| C. | sodium |
| D. | none of these |
| Answer» D. none of these | |
| 990. |
Who discovered the proton? |
| A. | madam curie |
| B. | faraday |
| C. | rutherford |
| D. | John Dalton |
| Answer» D. John Dalton | |
| 991. |
What are atoms electrically? |
| A. | negative |
| B. | positive |
| C. | Binary |
| D. | Moody |
| Answer» E. | |
| 992. |
Which of the following is a chemical compound? |
| A. | ammonia |
| B. | Wind |
| C. | Mercury |
| D. | all these |
| Answer» B. Wind | |
| 993. |
Which of the following is a temporary particle? |
| A. | neutron |
| B. | electron |
| C. | proton |
| D. | all these |
| Answer» B. electron | |
| 994. |
What is diamond? |
| A. | Compound |
| B. | mix |
| C. | Solid |
| D. | Element |
| Answer» E. | |
| 995. |
What is coal? |
| A. | Compound |
| B. | mix |
| C. | Element |
| D. | Solid |
| Answer» D. Solid | |
| 996. |
What is Stainless Steel? |
| A. | Compound |
| B. | Element |
| C. | Solid |
| D. | mix |
| Answer» E. | |
| 997. |
What is bleaching powder? |
| A. | Element |
| B. | Compound |
| C. | mix |
| D. | Merger |
| Answer» C. mix | |
| 998. |
Have ammo? |
| A. | Compound |
| B. | mix |
| C. | fluid |
| D. | none of these |
| Answer» C. fluid | |
| 999. |
Which scientist discovered the 'Atomic Theory'? |
| A. | John Dalton |
| B. | madam curie |
| C. | rutherford |
| D. | none of these |
| Answer» B. madam curie | |
| 1000. |
Which of the following is neither an element nor a compound? |
| A. | Mercury |
| B. | water |
| C. | Wind |
| D. | Sodium chloride |
| Answer» D. Sodium chloride | |