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ECAT Chemistry Chapter 5 Atomic Structure Online Test
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Total Questions30
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Time Allowed30
ECAT Chemistry Chapter 5 Atomic Structure Online Test
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Question # 1
The number of spherical nodes in 3p orbitals are
Question # 2
The wave length of electron as wave is 0.5 nm. What is the wave length in meter
Question # 3
The quantum number which describes the shape of the orbital is
Question # 4
The quantum number which describe the orientation of the orbitals is
Question # 5
With increasing principle quantum number, the energy difference between adjacent energy levels in H atom
Question # 6
Rutherford's atomic model suggests the existence of
Question # 7
The rules which describe the distribution of electron in atomic energy levels are Auf-ban principle, Pauli's exclusion principle. Hunds rule. The pauli exclusion principle refers to the
Question # 8
The value of R (Rydberg's constant) is _______ m-1
Question # 9
Which one of the following particles has amass 1/1836 time, that of hydrogen?
Question # 10
Which of the following particles has longest wavelength, if they have same speed:
Question # 11
For which of the following sets of quantum numbers and electron will have the highest energy?
Question # 12
In the atomic emission spectrum the lines which appear bright, appear dark in absorption spectrum because
Question # 13
The orbitals having n + l = 5 are
Question # 14
Smallest charge of electricity that has been measured so far is
Question # 15
The number of neutrons in the element 94Be is
Question # 16
Proton was discovered by:
Question # 17
The wave number of light emitted by a certain source is 2 x 105m. The wavelength of this light will be:
Question # 18
When an electric current is passed through discharge tube at low pressure, cathode rays are emitted from cathode these rays consist of:
Question # 19
The size of electronic shell is described by
Question # 20
The value of Plank's constant 'h' is
Question # 21
Which of the following has more unpaired d-electrons?
Question # 22
The de-Brogile wavelength of a particle with mass 1g and velocity 100 m/s is
Question # 23
Sodium chloride imparts a yellow colour to the Bunsen flame. This can be interpreted due to the
Question # 24
Which of the following is not a sub-atomic particle
Question # 25
In which of the following pairs, the numbers of electrons in the outermost shell are different?
Question # 26
The quantum number which determines the shape of the orbital is
Question # 27
The order of frequency of the following radiations unltraviolet, visible, infrared and microwave is
Question # 28
When electrons revolve in stationary orbits
Question # 29
Azimuthal quantum number of last electron of 11Na is
Question # 30
The four quantum numbers of the valency electron of potassium are
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Biology Chapter 1 - Answers Mode
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Biology Chapter 1 MCQ - PDF
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Download PDF with answers to study online or offline. The PDF cotnains all MCQ questions with answers for Class 10 Biology Chapter 1 - Acids and Liquids. Total questions are 12.