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SET-1
SET-2
SET-3
SET-4
SET-5
SET-6
SET-7
1.
If an electron and a photon have the same wave length, then they will have the same
A.
Velocity
B.
Angular momentum
C.
Linear momentum
D.
Energy
Answer :
Answer & Solution
2.
An element has atomic number 17 and mass number 36, then number of neutrons present in it
A.
17
B.
19
C.
36
D.
53
Answer :
Answer & Solution
3.
Atomic number of which of the following elements is greater than that of Calcium?
A.
Chlorine
B.
Scandium
C.
Argon
D.
Sulphur
Answer :
Answer & Solution
4.
The value of planck’s constant is
A.
6.62 × 10-34 erg.s
B.
6.62 × 10-34 J.s
C.
6.62 × 10-34 J
D.
None of these
Answer :
Answer & Solution
5.
Which of the following element has relative atomic weight that is made up to atom containing each of 17 Protons, 18 Neutrons and 17 Electrons?
A.
17
B.
18
C.
35
D.
52
Answer :
Answer & Solution
6.
Atomic number of which of the following elements is greater than that of Chlorine?
A.
Phosphorous
B.
Potassium
C.
Aluminium
D.
Sulphur
Answer :
Answer & Solution
7.
Which of the following particle has the dual nature of particle wave?
A.
Electron
B.
Neutron
C.
Meson
D.
Proton
Answer :
Answer & Solution
8.
How many neutrons are there in 92U238 atom?
A.
92
B.
146
C.
238
D.
330
Answer :
Answer & Solution
9.
Atomic number of which of the following elements is greater than that of Copper?
A.
Chromium
B.
Manganese
C.
Iron
D.
Zinc
Answer :
Answer & Solution
10.
The concept of dual nature of radiation was proposed by____
A.
De- Broglie
B.
Heisenberg
C.
Max planck
D.
Pauling
Answer :
Answer & Solution
11.
The number of neutrons present in an element having mass number 226 and number 88 is
A.
50
B.
88
C.
138
D.
314
Answer :
Answer & Solution
12.
Atomic number of an atom gives the number of which of the following?
A.
Protons
B.
Neutrons
C.
Neutrons and Protons
D.
Electrons
Answer :
Answer & Solution
13.
Atomic mass of Oxygen is 16 and atomic number is 8. What is the mass in grams of 2 moles of oxygen gas?
A.
8
B.
16
C.
32
D.
64
Answer :
Answer & Solution
14.
Atomic number of which of the following elements is greater than that of Fluorine?
A.
Beryllium
B.
Nitrogen
C.
Sodium
D.
Boron
Answer :
Answer & Solution
15.
The photoelectric effect is described as the ejection of electrons from the surface of a metal when
A.
It is heated
B.
Light of suitable frequency falls on it
C.
It is placed in strong field
D.
Electrons of suitable velocity impings on it
Answer :
Answer & Solution
16.
Atomic number of which of the following elements is greater than that of Iron?
A.
Chromium
B.
Calcium
C.
Manganese
D.
Cobalt
Answer :
Answer & Solution
17.
The photoelectric emission from metal surface starts only when the incident light has a certain minimum
A.
Acceleration
B.
Wavelength
C.
Velocity
D.
Frequency
Answer :
Answer & Solution
18.
Mass number is the sum of
A.
Protons and neutrons
B.
Only Protons
C.
Electrons and protons
D.
Electrons and Neutrons
Answer :
Answer & Solution
19.
Propagation of light quanta may be described by
A.
Electrons
B.
Neutrons
C.
Photons
D.
Protons
Answer :
Answer & Solution
20.
The mass number of an atom is
A.
Always equal to its atomic number
B.
Sometimes more and sometimes equal to its atomic number
C.
Always less than its atomic number
D.
Always more than its atomic number
Answer :
Answer & Solution
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