Proton

Q.

Which is heavier? Proton or Neutron.

Q.

What is the mass (atomic mass unit) of an electron?

1. A beam of protons

2. rays

3. A beam of neutrons

4. X-rays

Q. A neutral atom of an element has a nucleus with a nuclear charge 13 times and mass 27 times as that of a hydrogen nucleus. What is the ratio of electrons to protons in its stable positively charged ion?​

1. 27 : 13
2. 20 : 24
3. 10 : 13
4. 10 : 14

Q.

The symbol of neutron is :

1. $\mathrm{\alpha }$

2. $\mathrm{e}$

3. $\mathrm{p}$

4. $\mathrm{n}$

Q. Discovery of which amongst the following rays led to the discovery of proton?

1. Magnetic rays
2. Cathode rays
3. Canal rays
4. Electromagnetic rays

Q.

Complete the following table:

Particle	Symbol	Charge	Mass
Proton

Q.

The mass of a proton was calculated as being equal to the mass of the hydrogen atom.

1. True

2. False

Q.

Which of the following led to the discovery of protons?

1. Cathode rays

2. Electromagnetic rays

3. Magnetic rays

4. Canal rays

Q.

Which experiment led to the discovery of protons?

1. Alpha particle scattering experiment

2. Cathode ray tube experiment

3. Millikan's experiment

4. Thomson's experiment

Q.

What is the cathode ray tube?

1. 4

2. 6

3. 2

4. 3

Q. Goldstein observed that the deflection of anode rays in an electric field was ________ when compared to the deflection of cathode rays.

1. huge
2. 100 times bigger
3. equal
4. very small

Q.

What is an Alpha particle ?

Q. the ratio of mass of an electron to that of the mass of hydrogen atom is

Q. How mass of proton is 9 times the mass of Be+3

Q.

Which of the following was not an observation made during alpha particle scattering experiment?

1. Most of the fast moving alpha particles passed straight through the gold foil

2. Some of the alpha particles were deflected by the foil at small angles

3. Very small amount of particles (one out of every 12000 particles) appeared to rebound

4. All of these

Q.

Is the following statement correct?

Matter is electrical and negative in nature.

Q. Find The total mass of 1 mole of electrons is?

Q. The number of protons in an atom equals the number of what?

Q.

which is more lighter electron or proton

Q.

If the mass of protons is same for the atoms of all elements, then why e/m of the positively charged particles in anode rays differ from gas to gas?

Q.

Mass of a proton is ___ times the mass of an electron.

1. 1837

Q.

Anions are ________ ions.

Q.

Alpha particle scattering experiment gave totally unexpected results. Which of the following observations were made?

1. Most of the fast moving alpha particles passed straight through the gold foil

2. Some of the alpha particles were deflected by the foil at small angles

3. Very small amount of particles (one out of every 12000 particles) appeared to rebound

4. All of these