MEDIUM
UPSC CDS
IMPORTANT
Earn 100
Which one of the following is not a semiconductor?
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Important Questions on UPSC CDS (I) Previous Year Paper 2017
EASY
UPSC CDS
IMPORTANT
A parallel plate capacitor, with air in between the plates, has capacitance C. Now the space between the two plates of the capacitor is filled with a dielectric of dielectric constant . Then the value of the capacitance will become______.
MEDIUM
UPSC CDS
IMPORTANT
For which one of the following does the centre of mass lie outside the body?
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UPSC CDS
IMPORTANT
Which one of the following is a physical change?
MEDIUM
UPSC CDS
IMPORTANT
The pH value of a sample of multiple-distilled water is_____.
MEDIUM
UPSC CDS
IMPORTANT
Which one of the following is the most characteristic property of an element?
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UPSC CDS
IMPORTANT
There are two elements—calcium (atomic number ) and argon (atomic number ). The mass number of both elements is . They are therefore known as
MEDIUM
UPSC CDS
IMPORTANT
'Plum Pudding Model' for an atom was proposed by
MEDIUM
UPSC CDS
IMPORTANT
What is the number of atoms in g of sodium-(N = Avogadro constant)?
