

MCQOPTIONS
This section includes 45 Mcqs, each offering curated multiple-choice questions to sharpen your SRMJEEE knowledge and support exam preparation. Choose a topic below to get started.
1. |
Protons (p+) and neutrons (n0) constitute the |
A. | nucleus |
B. | nucleon |
C. | orbital |
D. | diameter |
Answer» C. orbital | |
2. |
Major part of an atom is |
A. | electric field |
B. | space |
C. | nucleus |
D. | orbital |
Answer» C. nucleus | |
3. |
Neutrons (n0) are neutral and carry |
A. | positive charge |
B. | negative charge |
C. | no charge |
D. | high voltage |
Answer» D. high voltage | |
4. |
Atom of aluminum (Al) has number of neutrons (n0) |
A. | 13 |
B. | 27 |
C. | 14 |
D. | 13 |
Answer» D. 13 | |
5. |
Mass number is the |
A. | atomic number |
B. | nucleon number |
C. | proton number |
D. | neutron number |
Answer» C. proton number | |
6. |
Number of electrons (e-) are always equal to number of protons(p+) in a |
A. | neutral atom |
B. | positive ion |
C. | negative ion |
D. | isotope |
Answer» B. positive ion | |
7. |
Specific radioactive isotopes are used for |
A. | leakage check |
B. | check thyroid activity |
C. | treat some types of cancer |
D. | All of Above |
Answer» E. | |
8. |
Hydrogen has a number of isotopes |
A. | 2 |
B. | 1 |
C. | 3 |
D. | 11 |
Answer» D. 11 | |
9. |
Most composition of sun is mainly |
A. | oxygen and hydrogen |
B. | hydrogen |
C. | hydrogen and helium |
D. | helium |
Answer» D. helium | |
10. |
Protons are deflected from anode which reveals their |
A. | positive charge |
B. | negative charge |
C. | neutral charge |
D. | all |
Answer» B. negative charge | |
11. |
1.67*10-27kg is weight of single atom of |
A. | oxygen |
B. | nitrogen |
C. | hydrogen |
D. | water |
Answer» D. water | |
12. |
Attractions of electrons towards anode shows |
A. | electrons are negatively charged |
B. | electrons carry very small mass |
C. | both A and B |
D. | electrons carry more mass than protons |
Answer» D. electrons carry more mass than protons | |
13. |
Charge to mass ratio was first calculated by |
A. | J.J.Thomas |
B. | Thomas Edison |
C. | J.K Thomas |
D. | A.Einstein |
Answer» B. Thomas Edison | |
14. |
Beam of electrons can be produced with help of |
A. | anode-ray tube |
B. | cathode-ray tube |
C. | inert-ray tube |
D. | bi-charged-ray tube |
Answer» C. inert-ray tube | |
15. |
Elements which are found on their own in nature as free elements are |
A. | gold and silver |
B. | coal and gold |
C. | nitrogen and gold |
D. | gold and mercury |
Answer» D. gold and mercury | |
16. |
Number of atoms in same element has same number of |
A. | protons |
B. | electrons |
C. | neutrons |
D. | All of Above |
Answer» B. electrons | |
17. |
Particular element posses same number of electrons hence have same |
A. | chemical properties |
B. | physical properties |
C. | density |
D. | All of Above |
Answer» B. physical properties | |
18. |
Number of protons and number of electrons are always equal in |
A. | neutral atom |
B. | molecules |
C. | ions |
D. | compounds |
Answer» B. molecules | |
19. |
By chemical means chemical elements cannot be broken down into |
A. | metals |
B. | non-metals |
C. | smaller substances |
D. | metalloids |
Answer» D. metalloids | |
20. |
Every substance in our world is made up of |
A. | matter |
B. | electrons |
C. | protons |
D. | chemical elements |
Answer» E. | |
21. |
Pathway of electron is called |
A. | orbit |
B. | orbital |
C. | axis |
D. | electric path |
Answer» C. axis | |
22. |
Number of proton, neutron and electron in sulfide ion is respectively |
A. | 16,17 and 18 |
B. | 17,16 and 18 |
C. | 18,17 and 16 |
D. | 18,16 and 17 |
Answer» B. 17,16 and 18 | |
23. |
Particles which revolve around nucleus are called |
A. | proton |
B. | electrons |
C. | neutron |
D. | All of Above |
Answer» C. neutron | |
24. |
When electrons are passed through electromagnetic field, electrons are deflected away from |
A. | positive plate |
B. | negative plate |
C. | neutral plate |
D. | oxidation plate |
Answer» C. neutral plate | |
25. |
Proton number is denoted by symbol |
A. | A |
B. | Z |
C. | P |
D. | N |
Answer» C. P | |
26. |
Elements which have same number of protons but different number of neutrons are called as |
A. | isotopes |
B. | isomers |
C. | allotropes |
D. | allomers |
Answer» B. isomers | |
27. |
Hydrogen atom has an approximate diameter of |
A. | 10-9m |
B. | 10-10m |
C. | 9-10m |
D. | 10-11m |
Answer» B. 10-10m | |
28. |
Sum of protons and neutrons in an atom gives off |
A. | nucleon number |
B. | mass number |
C. | atomic number |
D. | both A and B |
Answer» E. | |
29. |
By exposure of electrons beams on atoms and observing their behavior upon fall of beam can help to determine |
A. | charge |
B. | weight |
C. | length |
D. | all |
Answer» B. weight | |
30. |
An Electric field deflects beams of |
A. | protons |
B. | electrons |
C. | neutrons |
D. | both A and B |
Answer» E. | |
31. |
Chemical elements are represented by Greek or Latin |
A. | alphabets |
B. | symbols |
C. | gods |
D. | illusions |
Answer» C. gods | |
32. |
Number of times a p+ is heavier than an e- is |
A. | 18 times |
B. | 184 times |
C. | 200 times |
D. | 1840 times |
Answer» E. | |
33. |
Smallest particle of an element which can take part in any chemical change is know as a/an |
A. | nucleus |
B. | atom |
C. | proton |
D. | neutron |
Answer» C. proton | |
34. |
A covalent bond is also called as ____ |
A. | Atomic bond |
B. | Metal bond |
C. | Molecular bond |
D. | Metal bond |
Answer» D. Metal bond | |
35. |
Electrons that orbit outermost shell of an atom are called? |
A. | Valence electrons |
B. | Electrons |
C. | Electron Coefficients |
D. | Neutrons |
Answer» B. Electrons | |
36. |
What is the time during which one half of a number of radioactive species decays or one half of their activity ceases? |
A. | Half Life |
B. | Super critical state |
C. | Semi life |
D. | Critical life |
Answer» B. Super critical state | |
37. |
The net neutrons produced per initial neutron accounting for all possible losses is called? |
A. | Bombardment |
B. | Half life |
C. | Multiplication factors |
D. | Covalent bond |
Answer» D. Covalent bond | |
38. |
To disrupt a nucleus and separate in into its component nucleons, energy must be supplied from outside and this energy is called? |
A. | Bonding energy |
B. | Kinetic energy |
C. | Binding energy |
D. | Nuclear energy |
Answer» D. Nuclear energy | |
39. |
Number of protons in the nucleus is called ___________ |
A. | Atomic number |
B. | Mass number |
C. | Electric charge |
D. | Periodic number |
Answer» B. Mass number | |
40. |
On which law is the nuclear energy explained? |
A. | Einstein’s law |
B. | Newton’s law |
C. | Rutherford law |
D. | Mendeleev law |
Answer» B. Newton’s law | |
41. |
The atom as a whole is electrically charged. |
A. | True |
B. | False |
Answer» C. | |
42. |
Nucleus consists of two sub-particles known as? |
A. | Nucleotides |
B. | Nucleons |
C. | Neutrons |
D. | Nucleosides |
Answer» C. Neutrons | |
43. |
What is the most attractive part of nuclear energy? |
A. | Supports countries development |
B. | Causes no pollution |
C. | Has high efficiency of energy production |
D. | Is available in abundance |
Answer» C. Has high efficiency of energy production | |
44. |
How much amount of nuclear energy burnt is equivalent to the energy produced by 3000 tonnes of coal? |
A. | 1kg |
B. | 5kg |
C. | 15kg |
D. | 20kg |
Answer» B. 5kg | |
45. |
Why has nuclear energy become an inevitable option for the development of the country? |
A. | Because less pollution caused by nuclear plant |
B. | High efficiency of nuclear energy |
C. | Due to acute shortage of other sources of energy |
D. | High cost of energy production of other sources |
Answer» D. High cost of energy production of other sources | |