Orbital period of Halley's comet is ___ years.
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What is the atomicity of Phosphorous?
The diameter of the reflecting surface of a spherical mirror is called a/an
The ___ has abundant white fibres.
In the following series, one number is missing as shown by the ?. Select the missing number from the given options.
3, 8, 13, 18, ?
The maximum number of electrons that can be accommodated in a shell is indicated by the formula
In which of the following tissues are the cells living, elongated and irregularly thickened at the corners?
How many atoms will one mole of Carbon (C-12) contain?