Question : How many hydrogen atoms are there in a molecule of methane?

Option 1: 2

Option 2: 6

Option 3: 4

Option 4: 3

Question : If the sum of $\frac{a}{b}$ and its reciprocal is 1 and $a\neq 0,b\neq 0$, then the value of $a^{3}+b^{3}$ is:

Option 1: 2

Option 2: –1

Option 3: 0

Option 4: 1

Question : In which region of the electromagnetic spectrum does the Lyman series of hydrogen atoms lie?

Option 1: Visible

Option 2: Infrared

Option 3: Ultraviolet

Option 4: X-ray

Question : What is the value of $\frac{(a^2+b^2)(a-b)-(a^3-b^3)}{a^2b-ab^2}?$

Option 1: 0

Option 2: 1

Option 3: –1

Option 4: 3

Question : Rutherford's  scattering experiment proved the presence of

Option 1: Atoms in all matter

Option 2: electrons in atoms

Option 3: neutrons in atoms

Option 4: nucleus in atoms