NEET TEST SERIES 123 CHEMISTRY

1.   Statement I : Osmium exhibits a maximum oxidation state of +6
       Statement II : Osmium is a 4d block element.

a) Both Statement I and Statement II are true
b) Both Statement I and Statement II are False
c) Statement I is true but Statement II are False
d) Statement I is False but Statement II are TrueDeselect Answer

2. The correct order of increasing bond length is

a) O₂ < N₂ < Cl₂ < F₂
b) O₂ > N₂ > Cl₂ > F₂
c) O₂ < N₂ < Cl₂ > F₂
d) N₂ < O₂ < F₂ < Cl₂Deselect Answer

3. Which one is the most Acidic among the following oxide

(a) MgO
(b) P₄O₁₀
(c) Tl₂O₃
(d) SO₂

4. Uuu

(a) Copernicium
(b) Meitnerium
(c) Darmstadium
(d) RontgeniumDeselect Answer

5. Zero electron gain enthalpy is shown by

(a) B, N and O
(b) Na, Mg and Al
(c) H, He and Ne
(d) Be, Mg and PDeselect Answer

6. Which Hybridisation is not match with the following compound?

(a) SF₄ – sp³d 
(b) NH₃ – sp³
(c) BrF₅ – sp³d³
(d) SF₆ – sp³d²

7. The geometry of XeOF₂ is

(a) Octahedral
(b) T-shape
(c) Square Planar 
(d) Tetrahedral

8. Magnesium reacts with an elements X to form an ionic compoun(d) If the ground state electronic configuration of X is 1s² 2s² 2p³ , the simplest formula for this compound is

(a) Mg₂X₃
(b) MgX₂
(c) Mg₂X   
(d) Mg₃X₂

9. Which of the following ion has the maximum polarizing power ?

(a) Na⁺
(b) Mg²⁺
(c) Ca²⁺
(d) Al³⁺

10. Dinitrogen is relatively inactive because

a) It has high Electronegativity
b) It has high bond dissociation enthalpy
c) High Melting and Boiling point
d) Stable electronic configurationDeselect Answer

(a) 0.9555 M and 1.910 M                                
(b) 1.910 M and 0.955 M
(c) 1.90 M and 1.090 M                          
(d) 0.477 M and 0.477 M

(a) 2 
(b) 1                 
(c) -1/2
(d) 3/2