HSC +2 Chemistry Chapter Wise Questions - CC1- Atomic Structure

We are starting a new series of chapter wise questions HSC chemistry. You can always get the posts on this series by using the suffix "CC1". In this post, we will be presenting some one mark questions on the chapter "Atomic Structure". If you know the answers the questions, you can post them in the related posts section at the bottom of the blog.

1) $ E_{n}=\frac{-313.6}{n^2} $, If the value of $ E_{n}=\frac{-313.6}{n^2} $ to which the value ‘n’ corresponds:

a) 4                b) 3                c) 2                d) 1

2) Dual character of an electron was explained by:

a) Bohr                b) Heisenberg                c) de-Broglie                d) Pauli

3) de-Broglie equation is:

a) $ \lambda=\frac{mv}{h} $

b) $ \lambda=hmv $

c) $ \lambda=\frac{hv}{m} $

d) $ \lambda=\frac{h}{mv} $

4) The value of Bohr radius for hydrogen atom is:

a) $ 0.529 \times 10^{-8} \; cm $

b) $ 0.529 \times 10^{-10} \; cm $

c) $ 0.529 \times 10^{-6} \; cm $

d) $ 0.529 \times 10^{-12} \; cm $

5) Which of the following particle having same kinetic energy, would have the maximum de-Broglie wavelength:

a) $ \alpha- $ particle

b) proton

c) $ \beta- $ particle

d) neutron

6) If the energy of an electron in the second Bohr orbit of H-atom is –E, what is the energy of the electron in the Bohr’s first orbit?

a) 2E               b) -4E               c) -2E               d) 4E

7) The energy of electron in an atom is given by $ E_{n}= $

a) $ -\frac{4{\pi}^2 me^4}{n^2h^2} $

b) $ -\frac{2{\pi}^2 me^2}{n^2h^2} $

c) $ -\frac{2{\pi}^2 me^4}{n^2h^2} $

d) $ -\frac{2{\pi}^2 me^4}{n^2h^2} $

8) The bond order of oxygen molecule is:

a) 2.5                   b) 1                   c) 3                   d) 2

9) The hybridization in $ SF_{6} $ molecule is:

a) $ sp^3 $

b) $ sp^3d^2 $

c) $ sp^3d $

d) $ sp^3d^3 $

10) The intra-molecular hydrogen bonding is present in:

a) o-nitrophenol           b) m-nitrophenol           c) p-nitrophenol           d) None

1 comment:

BALA said...

kindly provide the answer for all the chapterwise questions with explanations, which will help the people to prepare for IIT entrance exams