Grade 11- Chap-2.Structure of atom
Quiz by Charvi Korgaonkar
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- Q1
Which of the scientist were able to prove that atom is no longer non-divisible?
(b) Michael Faraday
(d) Chadwick
(a) Dalton
(c) Thomson
30s - Q2
Which of the following is never true for cathode rays ?
(a) They possess kinetic energy.
(c) They produce heat.
(d)They produce mechanical pressure
(b) They are electromagnetic waves.
30s - Q3
The lightest particle is :
(d) neutron
(a) D -particle
(b)positron
(c) proton
30s - Q4
Neutron is discovered by
(a) Chadwick
(d) Dalton
(c) Yukawa
(b) Rutherford
30s - Q5
The number of neutrons in dipositive zinc ion with mass number 70 is
(a) 34
(c) 38
(b) 36
(d)40
30s - Q6
In discharge tube experiment stream of negatively charged particles travel from
(c)Both (a) and (b)
(d) Electrons does not travel
(a) anode to cathode
(b) cathode to anode
30s - Q7
While performing cathode ray experiments, it was observed that there was no passage of electric current under normal conditions. Which of the following can account for this observation ?
(c) Air is a poor conductor of electricity under normal conditions
(b) Carbon dioxide is present in air
(d) None of the above
(a) Dust particles are present in air
30s - Q8
Which is the correct schematic representation of the graph of black body radiation.
30s - Q9
The number of electrons in
(c)18
(d)19
(a)20
(b)40
30s - Q10
Suppose beam containing all three fundamental subatomic particles are allowed to pass through an electric field as shown in figure. The subatomic particles detected at three points A, B and C on the screen respectively are ?
(c) Electrons, protons, neutrons
(b) Electrons, neutrons, protons
(a) Protons, neutrons, electrons
(d) Neutrons, protons, electrons
30s - Q11
Which of the rays are not deflected by the electric and magnetic field?
(d) Both (a) and (b)
30s - Q12
12.
(b)protons
(c) nucleus
(a)electrons
(d)neutrons
30s - Q13
An element has atomic number 11 and mass number 24. What does the nucleus contain?
(d) 13 protons, 11 electrons
(a) 11 protons, 13 neutrons
(b) 11 protons, 13 neutrons, 13 electrons
(c) 13 protons, 11 neutrons
30s - Q14
Nucleons are
(a) only neutrons
(b) neutrons + protons
(d) neutrons + electrons
(c) neutrons + protons + electrons
30s - Q15
Atoms with same mass number but different atomic numbers are called
(d) None of these
(b) isobars
(a) isotopes
(c) isochores
30s
