Everyday Science MCQs

5120 MCQs  (Page 331 of 512)

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The correct electronic configuration of Cu is ___________________?
A. [ar]4s1
B. [ar]4s2
C. [ar]3d104s1
D. [ar]3d94s2
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Atomic orbits having same energy are called________________?
A. Degenerate orbitals
B. Bonding molecular orbitals
C. Anti bonding molecular orbitals
D. Half filled orbitals
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When electrons collide with heavy metals than ___________ are produced?
A. Beta-rays
B. Alpha-rays
C. X-rays
D. Gamma-rays
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Atom with higher atomic number produces X-rays of__________________?
A. Shorter wavelength
B. Larger wavelength
C. X-ray not produced
D. All are possible
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Space around nucleus where finding probability of electrons is maximum is called ____________________?
A. Orbital
B. Orbit is elliptical
C. Subshell
D. Electron cloud
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Electronic configuration of K is_________________?
A. [ar]4s2
B. [ar]4s1
C. [kr]5s1
D. [he]2s1
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Milikan used ______________ in his atomizer?
A. Milk
B. Honey
C. Oil
D. Water
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Spectrum is produced due to________________?
A. Different wavelength
B. Different colours
C. Different intensities
D. All have little contribution
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Splitting of spectral lines when atom is subjected to magnetic field is called _______________?
A. Zeemans effect
B. Starks effect
C. Photo electric effect
D. Compton effect
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Which one of the following explain the shape of orbitals _________________?
A. Principal of quantum number
B. Azimuthal quantum number
C. Magnetic quantum number
D. Spin quantum number
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Word of the Day
26 Jul
Simultaneously
at the same time.
ایک ہی وقت میں، ایک ساتھ، بیک وقت

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