Chemistry MCQs Test 07 Online Preparation

1. Which of the following statement is correct ?

A. size of Na atom < Na+ ion

B. size of Cl atoms > Cl- ion

C. Cl- < Na+

D. size of Na+ ion < Na atom

2. Which of the following is mineral fiber.

A. saran

B. asbestos

C. teflon

D. acrylic

3. Which of the following is mineral fiber.

A. saran

B. asbestos

C. acrylic

D. teflon

4. Which catalyst is used in contact process?

A. Ag2O

B. Fe2O3

C. V2O5

D. SO3

5. Which statement is consistent with Hunds rule.

A. There is maximum of two electrons is an orbital

B. Electrons fill orbitals with parallel spins until all the orbitals of the same energy are half filled then they go into sub-shells with anti-parallel (opposite) spin

C. The electrons in the same atom cannot have the same four quantum numbers

D. None

6. When methl iodide and ethyl iodide are treated with sodium metal possible major products are obtained ?

A. 3

B. 1

C. 2

D. 4

7. When an electron is moving with velocity of 2.188 x 106 ms-1 in the first orbit of Bohrs model of hydrogen. The de Broglie wavelength of electron is ?

A. 0.34 nm

B. 0.35 nm

C. 0.36 nm

D. 0.33 nm

8. What is maximum number of electrons in an orbital with m (magnetic quantum number) = 3

A. 4

B. 2

C. 6

D. 8

9. On heating aldehydes with Fehlings solution we get a precipitate whose colour is ?

A. brick red

B. pink

C. yellow

D. black

10. Atomic number of Mn is 25 what is the electronic configuration in the ground state ?

A. 1s2 2s2 2p6 3s2 3p6 4s2 4p5

B. 1s2 2s2 2p6 3s2 3p5 3d10

C. 1s2 2s2 2p6 3s2 3p6 4s23d5

D. 1s2 2s2 2p6 3s2 3p6 3d7

Chemistry MCQs Test 07 Online Preparation

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