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Free tnpsc model questions Online Test - MeritNotes
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No. of Questions :10
Remaining Time :
1. The central core of the sun is called
(a)
Ionosphere
(b)
Photosphere
(c)
Chromosphere
(d)
Troposphere
2. Corpuscular theory was first challenged to
(a)
Huygens
(b)
Maxwell
(c)
Netwon
(d)
Planck
3. The spectral lines formed in the scattering of light by the atoms and molecules is known as
(a)
Raman spectrum
(b)
Molecular spectrum
(c)
Fraunhofer lines
(d)
Atomic spectrum
4. A line spectrum identifies
(a)
plasma
(b)
solid
(c)
liquid
(d)
gas
5. The region of the atmosphere that contains electrons and positive ions is
(a)
Exosphere
(b)
Stratosphere
(c)
Troposphere
(d)
Ionosphere
6. Cellular phones use radiowaves in
(a)
AM band
(b)
FM band
(c)
short waveband
(d)
ultrahigh frequency band
7. Atomic spectrum should be
(a)
absorption band spectrum
(b)
absorption line spectrum
(c)
emission band spectrum
(d)
pure line spectrum
8. H-polaroids and K-polaroids are prepared from
(a)
calcite crystal
(b)
polyvinyl alcohol
(c)
quartz
(d)
NaCl
9. The atmosphere is transparent to
(a)
Visible rays
(b)
X-rays
(c)
IR radiations
(d)
UV radiations
10. The sun looks reddish at sunset and sunrise because
(a)
the blue colour in the spectrum is absorbed by the medium
(b)
the blue colour is scattered away and red reaches the observer
(c)
the blue colour is absent in the solar spectrum at that time
(d)
the red colour is scattered away and blue reaches
